Source: AGRICOLA database (1970-1996)

Abu, O. A., O. O. Tewe, et al. (2000). Changes in lipid, fatty acids and protein composition of sweet potato (Ipomoea batatas) after solid-state fungal fermentation. Bioresource Technology. April 72(2): 189-192. {a} Department of Biological Sciences, Division of Botany and Microbiology, Kuwait University, Safat, 3060, Kuwait

Afreen, Z. F., S. M. A. Zobayed, et al. (2000). A combination of vermiculite and paper pulp supporting material for the photoautotrophic micropropagation of sweet potato. Plant Science Shannon. [print] August 157(2): 225-231. {a} Department of Biological Sciences, University of Hull, Hull, HU6 7RX, UK

Binner, S., W. G. Jardine, et al. (2000). Cell wall modifications during cooking of potatoes and sweet potatoes. Journal of the Science of Food and Agriculture. Jan. 80(2): 216-218. {a} Chemistry Department, Glasgow University, Glasgow, G12 8QQ, UK

Chang, S. C., P. C. Lin, et al. (2000). The isolation and characterization of Chaperonin 60 from sweet potato roots - Involvement of the chaperonins in starch biosynthesis. Botanical Bulletin of Academia Sinica Taipei. April 41(2): 105-111. {a} Department of Agricultural Chemistry, National Taiwan University, Taipei, 106, Taiwan

Cruz, V. I. and F. O. Fatibello (2000). Biosensor based on paraffin/graphite modified with sweet potato tissue for the determination of hydroquinone in cosmetic cream in organic phase. Talanta . [print] 52(4): 681-689. {a} Departamento de Quimica, Grupo de Quimica Analitica, Centro de Ciencias Exatas e de Tecnologia, Universidade Federal de Sao Carlos, CEP 13.560-970, Sao Carlos, SP, Brazil

Di, F. L., S. F. Nome, et al. (2000). Etiology of sweet potato chlorotic dwarf disease in Argentina. Plant Disease. Jan. 84(1): 35-39. {a} International Potato Center (CIP), Lima, Peru

Duan, K. J., M. T. Lin, et al. (2000). Production of GST-SOD fusion protein by recombinant E coli XL1 Blue. Journal of Chemical Technology and Biotechnology. [print] August 75(8): 722-728. {a} Department of Bioengineering, Tatung University, Taipei, Taiwan

Eulgem, T., P. J. Rushton, et al. (2000). The WRKY superfamily of plant transcription factors. Trends in Plant Science. [print] May 5(5): 199-206. {a} Abteilung Biochemie, Max-Planck-Institut fuer Zuechtungsforschung, Carl-von-Linne-Weg 10, D-50829, Koeln, Germany

Fatibello, F. O. and I. C. Vieira (2000). Construction and analytical application of a biosensor based on stearic acid-graphite powder modified with sweet potato tissue in organic solvents. Fresenius' Journal of Analytical Chemistry. [print] October 368(4): 338-343. {a} Grupo de Quimica Analitica, Departamento de Quimica, Centro de Ciencias Exatas e de Tecnologia, Universidade Federal de Sao Carlos, Sao Carlos, SP, Brazil

Feng, G., G. Yifu, et al. (2000). Production and deployment of virus-free sweetpotato in China. Crop Protection. March 19(2): 105-111. {a} School of Life Science, Southwest China Normal University, Chongqing, 400715, China

Fujihara, S. and M. Yoshida (2000). Allelopathy of hairy vetch, Vicia villosa ROTH. and its application for crop production as mulching material. Bulletin of the Shikoku National Agricultural Experiment Station. March 65: 17-32.

Hartemink, A. E., M. Johnston, et al. (2000). Nitrogen use efficiency of taro and sweet potato in the humid lowlands of Papua New Guinea. Agriculture Ecosystems and Environment. [print] July 79(2-3): 271-280. {a} ISRIC, 6700 AJ, Wageningen, Netherlands

Hartemink, A. E., S. Poloma, et al. (2000). Yield decline of sweet potato in the humid lowlands of Papua New Guinea. Agriculture Ecosystems and Environment. [print] July 79(2-3): 259-269. {a} ISRIC, 6700 AJ, Wageningen, Netherlands

Hebling, M. J. A., O. C. Bueno, et al. (2000). Effects of leaves of Ipomoea batatas (Convolvulaceae) on nest development and on respiratory metabolism of leaf-cutting ants Atta sexdens L. (Hym., Formicidae). Journal of Applied Entomology. [print] September 124(5-6): 249-252. {a} Centro de Estudos de Insetos Sociais, Universidade Estadual Paulista, Instituto de Biociencias, Avenida 24-1A, 1515, Rio Claro, SP, 13506-900, Brazil

Huang, J., X. Ge, et al. (2000). Modified CTAB protocol using a silica matrix for isolation of plant genomic DNA. Biotechniques . March 28(3): 432-434. {a} Department of Zoology, University of Hong Kong, Pokfulam Road, Hong Kong, China

Huang, J. and M. Sun (2000). Fluorescein PAGE analysis of microsatellite-primed PCR: A fast and efficient approach for genomic fingerprinting. Biotechniques . [print] June 28(6): 1068-1072. {a} Department of Zoology, University of Hong Kong, Pokfulam Road, Hong Kong, China

Huang, J. C. and M. Sun (2000). Genetic diversity and relationships of sweetpotato and its wild relatives in Ipomoea series Batatas (Convolvulaceae) as revealed by inter-simple sequence repeat (ISSR) and restriction analysis of chloroplast DNA. Theoretical and Applied Genetics. [print] May 100(7): 1050-1060. {a} Department of Zoology, University of Hong Kong, Pokfulam Road, Hong Kong, China

Ila, a. V. P., C. J. Asher, et al. (2000). Response of sweet potato cultivars to acid soil infertility factors. II. Effects of calcium supply and soluble aluminium on early growth. Australian Journal of Agricultural Research 51(1): 29-36. {a} Environment Department, Ok Tedi Mining Limited, Tabubil, Western Province, Papua New Guinea

Ila, a. V. P., C. J. Asher, et al. (2000). Response of sweet potato cultivars to acid soil infertility factors. I. Effects of solution pH on early growth. Australian Journal of Agricultural Research 51(1): 23-28. {a} Environment Department, Ok Tedi Mining Limited, Tabubil, Western Province, Papua New Guinea

Ishida, H., H. Suzuno, et al. (2000). Nutritive evaluation on chemical components of leaves, stalks and stems of sweet potatoes (Ipomoea batatas poir). Food Chemistry. Feb. 68(3): 359-367. {a} Department of Nutrition, Junior College, Tokyo University of Agriculture, 1-1-1, Sakuragaoka, Setagayaku, Tokyo, Japan

Kano, Y. and Z. J. Ming (2000). Effects of soil temperature on the thickening growth and the quality of sweetpotatoes during the latter part of their growth. Environment Control in Biology. [print] September 38(3): 113-120. {a} Ishikawa Agricultural College, Nonoichi, Ishikawa, 921-8836, Japan

Karyeija, R. F., J. F. Kreuze, et al. (2000). Synergistic interactions of a potyvirus and a phloem-limited crinivirus in sweet potato plants. Virology . March 269(1): 26-36. {a} Department of Plant Biology, Genetic Centre, S-750 07, Uppsala, Sweden

Kim, K. Y., H. K. Kwon, et al. (2000). Differential expression of four sweet potato peroxidase genes in response to abscisic acid and ethephon. Phytochemistry Oxford. [print] May 54(1): 19-22. {a} Plant Cell Biotechnology Laboratory, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yusong, Taejon, 305-600, South Korea

Konczak, I. I., M. Yoshinaga, et al. (2000). Establishment and characteristics of an anthocyanin-producing cell line from sweet potato storage root. Plant Cell Reports. April 19(5): 472-477. {a} Laboratory of Upland Crop Genetic Resources, Department of Upland Farming, Kyushu National Agricultural Experiment Station, 6644 Yokoichi, Miyakonojo, Miyazaki, 885-0091, Japan

Kreuze, J. F., R. F. Karyeija, et al. (2000). Comparisons of coat protein gene sequences show that East African isolates of Sweet potato feathery mottle virus form a genetically distinct group. Archives of Virology 145(3): 567-574. {a} Department of Plant Biology, Genetic Centre, Swedish University of Agricultural Sciences (SLU), S- 750 07, Uppsala, Sweden

Kusano, S. and H. Abe (2000). Antidiabetic activity of white skinned sweet potato (Ipomoea batatas L.) in obese Zucker fatty rats. Biological and Pharmaceutical Bulletin. Jan. 23(1): 23-26. {a} Research Institute, Fuji Sangyo Co., Ltd., 1301 Tamura-cho, Marugame, Kagawa, 763-0071, Japan

La, B. D. R., A. Q. Villordon, et al. (2000). Black polyethylene tunnel covers affect plant production and quality of sweetpotato transplants. Hortscience . April 35(2): 202-204. {a} Department of Horticulture, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803, USA

Pennycooke, J. C. and L. E. Towill (2000). Cryopreservation of shoot tips from in vitro plants of sweet potato (Ipomoea batatas (L.) Lam.) by vitrification. Plant Cell Reports. [print] June 19(7): 733-737. {a} National Seed Storage Laboratory, USDA/ARS, 1111 S. Mason St., Fort Collins, CO, 80521, USA

Salvador, L. D., T. Suganuma, et al. (2000). Monosaccharide composition of sweetpotato fiber and cell wall polysaccharides from sweetpotato, cassava, and potato analyzed by the high-performance anion exchange chromatography with pulsed amperometric detection method. Journal of Agricultural and Food Chemistry. [print] August 48(8): 3448-3454. {a} Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University, 1-21-24 Korimoto, Kagoshima, 890-0065, Japan

Sim, J., R. A. Valverde, et al. (2000). Whitefly transmission of Sweetpotato chlorotic stunt virus. Plant Disease. [print] November 84(11). {a} Department of Plant Pathology and Crop Physiology, Louisiana Agricultural Experiment Station, Louisiana State University, AgCenter, Baton Rouge, LA, 70803, USA

Terahara, N., I. I. Konczak, et al. (2000). Anthocyanins in callus induced from purple storage root of Ipomoea batatas L. Phytochemistry Oxford. [print] August 54(8): 919-922. {a} Department of Food Science and Technology, Laboratory of Food Chemistry, College of Horticulture, Minami-Kyushu University, Takanabe, Miyazaki, 884-0003, Japan

Tomlins, K. I., G. T. Ndunguru, et al. (2000). Postharvest handling, transport and quality of sweet potato in Tanzania. Journal of Horticultural Science and Biotechnology. [print] September 75(5): 586-590. {a} Natural Resources Institute, University of Greenwich, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK

Tsubone, M., F. Kubota, et al. (2000). Enhancement of tuberous root production and adenosine 5'-diphosphate pyrophosphorylase (AGPase) activity in sweet potato (Ipomoea batatas Lam.) by exogenous injection of sucrose solution. Journal of Agronomy and Crop Science. [print] May 184(3): 181-186. {a} Laboratory of Plant Production Physiology, Division of Bioresource and Bioenvironmental Sciences, Graduate School, Kyushu University, Hakozaki, Higashi-ku, Fukuoka, 812-8581, Japan

Tsukui, A., A. Suzuki, et al. (2000). Effect of acetic acid fermentation on the stability of anthocyanin pigments. Nippon Shokuhin Kagaku Kogaku Kaishi. [print] 47(4): 311-316. {a} Tokyo Kasei Gakuin Junior College, 22 Sanbancho, Chiyoda-ku, Tokyo, 102-0075, Japan

Wang, Y. and S. J. Kays (2000). Contribution of volatile compounds to the characteristic aroma of baked 'Jewel' sweetpotatoes. Journal of the American Society for Horticultural Science. [print] September 125(5): 638-643. {a} Department of Horticulture, The University of Georgia, Athens, GA, 30602-7273, USA

Yamashita, M. (2000). Nurturing of plantlets using cut pieces from the storage roots of sweet potatoes (Ipomoea batatas (L.) Lam.) and their productivity in the field. Plant Production Science. [print] September 3(3): 259-267. {a} Kyusyu National Agricultural Experiment Station, 2421 Suya, Nishigoshi, Kikuchi-gun, Kumamoto, 861-1192, Japan

Yoshinaga, M., M. Tanaka, et al. (2000). Changes in anthocyanin content and composition of developing storage root of purple-fleshed sweet potato (Ipomoea batatas (L.) Lam). Breeding Science. March 50(1): 59-64. {a} Department of Upland Farming, Kyushu National Agricultural Experiment Station (KNAES), 6644 Yokoichi, Miyakonojo, Miyazaki, 885-0091, Japan

Yun, B. W., G. H. Huh, et al. (2000). Differential resistance to methyl viologen in transgenic tobacco plants that express sweet potato peroxidases. Journal of Plant Physiology. [print] April 156(4): 504-509. {a} Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yusong, Taejon, 305-600, South Korea

Zobayed, S. M. A., F. Afreen, et al. (2000). Water control and survival of Ipomoea batatas grown photoautotrophically under forced ventilation and photomixotrophically under natural ventilation. Annals of Botany London. [print] September 86(3): 603-610. {a} Department of Biological Science, University of Hull, Hull, HU6 7RX, UK

Afek, U., J. Orenstein, et al. (1999). Fogging disinfectants inside storage rooms against pathogens of potatoes and sweet potatoes. Crop Protection. March 18(2): 111-114. {a} Department of Postharvest Science of Fresh Produce, Agricultural Research Organization, Gilat Experiment Station, Negev 2, 85280, Israel

Afreen, Z. F., S. M. A. Zobayed, et al. (1999). Supporting material affects the growth and development of in vitro sweet potato plantlets cultured photoautotrophically. In Vitro Cellular and Developmental Biology Plant. Nov. Dec. 35(6): 470-474. {a} Laboratory of Environmental Control Engineering, Faculty of Horticulture, Chiba University, Matsudo, Chiba, 271-8510, Japan

Agwunobi, L. N. (1999). Performance of broiler chickens fed sweet potato meal (Ipomoea batatas L.) diets. Tropical Animal Health and Production. Dec. 31(6): 383-389. {a} Department of Animal Science, University of Calabar, Calabar, West Africa, Nigeria

Aritua, V., J. P. Legg, et al. (1999). Effect of local inoculum on the spread of sweet potato virus disease: Limited infection of susceptible cultivars following widespread cultivation of a resistant sweet potato cultivar. Plant Pathology Oxford. Oct. 48(5): 655-661. {a} Natural Resources Institute, Greenwich University, Central Avenue, Chatham Maritime, Kent, ME4 4TB, UK

Bae, J. M., C. H. Harn, et al. (1999). Characterization of transgenic tobacco plants carrying small subunit ADPglucose pyrophosphorylase cDNAs from sweet potato. Journal of Plant Physiology. May 154(5-6): 651-656. {a} Plant Cell and Molecular Biology Research Unit, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yusong, Taejon, 305-600, South Korea

Battistuzzi, G., M. Borsari, et al. (1999). Redox chemistry and acid-base equilibria of mitochondrial plant cytochromes c. Biochemistry . April 38(17): 5553-5562. {a} Department of Chemistry, University of Modena and Reggio Emilia, Via Campi 183, 41100, Modena, Italy

Buteler, M. I., R. L. Jarret, et al. (1999). Sequence characterization of microsatellites in diploid and polyploid Ipomoea. Theoretical and Applied Genetics. July 99(1-2): 123-132. {a} Department of Horticulture, Louisiana State University, Baton Rouge, LA, 70803, USA

Collado, L. S., R. C. Mabesa, et al. (1999). Genetic variation in the physical properties of sweet potato starch. Journal of Agricultural and Food Chemistry. Oct. 47(10): 4195-4201. {a} Cereal Science Laboratory, Department of Botany, University of Hong Kong, Pokfulam Road, Hong Kong, China

Collins, W. W., K. V. Pecota, et al. (1999). 'Carolina Ruby' sweetpotato. Hortscience 34(1): 155-156. {a} Int. Potato Cent., Apartado 1558, Lima 12, Peru

Darlis, N. Abdullah, et al. (1999). Preference test on feed and nutrient intakes in male and female lesser mouse deer (Tragulus javanicus) in captivity. Asian Australasian Journal of Animal Sciences. Dec. 12(8): 1292-1297. {a} Department of Biochemistry and Microbiology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia

Dhillon, N. P. S. and K. Ishiki (1999). Genomic variation and genetic relationships in Ipomoea spp. Plant Breeding. May 118(2): 161-165. {a} Okinawa Subtropical Station, Japan International Research Centre for Agricultural Sciences, 1091-1, Maezato, Ishigaki, Okinawa, 907-0002, Japan

Di, L. P., N. Mascarello, et al. (1999). First report of sweetpotato scurf caused by Monilochaetes infuscans in Italy. Plant Disease 83(3): 300. {a} Ist. Patol. Vegetale, Univ. Padova, Strada Romea 16, Legnaro, Italy

Durmus, A., C. Eicken, et al. (1999). The active site of purple acid phosphatase from sweet potatoes (Ipomoea batatas): Metal content and spectroscopic characterization. European Journal of Biochemistry 260(3): 709-716. {a} Anorganisch-Chemisches Institut der Universitaet Muenster, Wilhelm-Klemm-Strasse 8, D-48149, Muenster, Germany

Durmus, A., C. Eicken, et al. (1999). Cloning and comparative protein modeling of two purple acid phosphatase isozymes from sweet potatoes (Ipomoea batatas). Biochimica et Biophysica Acta. Sept. 14(1): 202-209. {a} Anorganisch-Chemisches Institut, Universitaet Muenster, Wilhelm-Klemm-Strasse 8, 48149, Muenster, Germany

Eguchi, T., M. Kitano, et al. (1999). Growth of tuberous root as affected by the ambient humidity in sweetpotato (Ipomoea batatas Lam .). Environment Control in Biology. Sept. 37(3): 197-201. {a} Biotron Institute, Kyushu University 12, Fukuoka, 812-8581, Japan

El, S. M. S. S. and B. M. K. El (1999). Effect of potassium and nitrogen sources in tissue cultures of sweet potato. Egyptian Journal of Horticulture. [print] 26(3): 267-279. {a} Hort. Res. Inst., Agric. Res. Centre and Plant Cell and Tissue Culture Department, National Research Centre, Cairo, Egypt

Emuh, F. N. and A. A. Agboola (1999). Effect of intercropping sweet potato (Ipomea batatas) with pigeonpea (Cajanus cajan) and okra (Hibiscus esculentus) on economic yield of maize (Zea mays) and maximization of land use. Indian Journal of Agricultural Sciences. March 69(3): 172-174. {a} University of Ibadan, Ibadan, Nigeria

Fischler, M. and C. S. Wortmann (1999). Green manures for maize-bean systems in eastern Uganda: Agronomic performance and farmers' perceptions. Agroforestry Systems 47(1-3): 123-138. {a} PASOLAC/IICA, San Salvador, El Salvador

Garcia, G. R., S. D. Somontes, et al. (1999). Plant regeneration from leaf and stem explants from two sweet potato (Ipomoea batatas L. Lam.) cultivars. Biotecnologia Aplicada. Jan. March 16(1): 11-14. {a} Division de Plantas, Centro de Ingenieria Genetica y Biotecnologia, Camaguey, CP 70100, Camaguey, Cuba

Headrick, D. H., T. S. Bellows, et al. (1999). Development and reproduction of a population of Eretmocerus eremicus (Hymenoptera: Aphelinidae) on Bemisia argentifolii (Homoptera: Aleyrodidae). Environmental Entomology. April 28(2): 300-306. {a} Department of Entomology, University of California, Riverside, CA, 92521, USA

Heo, J. and T. Kozai (1999). Forced ventilation micropropagation system for enhancing photosynthesis, growth, and development of sweetpotato plantlets. Environment Control in Biology. March 37(1): 83-92. {a} Department of Bioproduction Science, Faculty of Horticulture, Chiba University, Matsudo, 271-8510, Japan

Hou, W. C., J. S. Liu, et al. (1999). Dioscorin, the major tuber storage protein of yam (Dioscorea batatas Decne) with carbonic anhydrase and trypsin inhibitor activities. Journal of Agricultural and Food Chemistry. May 47(5): 2168-2172. {a} Academia Sinica, Institute of Botany, Nankang, Taipei, Taiwan, 115, China

Huaman, Z., C. Aguilar, et al. (1999). Selecting a Peruvian sweetpotato core collection on the basis of morphological, eco-geographical, and disease and pest reaction data. Theoretical and Applied Genetics. April 98(5): 840-844. {a} Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, DK-1871, Frederiksberg C, Denmark

Hwang, S. Y., H. W. Lin, et al. (1999). Reduced susceptibility to waterlogging together with high-light stress is related to increases in superoxide dismutase and catalase activities in sweet potato. Plant Growth Regulation. March 27(3): 167-172. {a} Graduate Institute of Biotechnology, Chinese Culture University, 55 Hwagan Rd., Yang Ming Shan, Taipei, Taiwan

Kano, Y. and R. Nagata (1999). Comparison of the rooting ability of virus infected and virus-free cuttings of sweet potatoes (Ipomoea batatas Poir.) and an anatomical comparison of the roots. Journal of Horticultural Science and Biotechnology. Nov. 74(6): 785-790. {a} Ishikawa Agricultural College, Nonoichi, Ishikawa, Japan

Katayama, K., K. Komaki, et al. (1999). Varietal and annual variations in pasting properties of sweet potato starch. Breeding Science. Sept. 49(3): 173-178. {a} National Agriculture Research Center, 3-1-1 Kannondai, Tsukuba, Ibaraki, 305-8666, Japan

Kim, K. Y., G. H. Huh, et al. (1999). Molecular characterization of cDNAs for two anionic peroxidases from suspension cultures of sweet potato. Molecular and General Genetics. July 261(6): 941-947. {a} Plant Biochemistry Research Unit, Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, 305-600, South Korea

La, B. D. R., H. F. Harrison, et al. (1999). Sweetpotato clone tolerance to weed interference. Hortscience . April 34(2): 229-232. {a} Department of Horticulture, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge, LA, 70803-2120, USA

Leangon, S., I. S. Maddox, et al. (1999). Influence of the glycolytic rate on production of citric acid and oxalic acid by Aspergillus niger in solid state fermentation. World Journal of Microbiology and Biotechnology. Aug. 15(4): 493-495. {a} College of Sciences, Massey University, Palmerston North, New Zealand

Maeo, K., A. Morikami, et al. (1999). Expression patterns of two genes for the delta-subunit of mitochondrial F1-ATP synthase from sweet potato in transgenic tobacco plants and cells. Plant and Cell Physiology. Aug. 40(8): 866-873. {a} Laboratory of Biochemistry, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya, 464-8601, Japan

Menendez, d. L. L. R. L. (1999). The American plants in Charles de l'Ecluse's works: First records in Juan de Castaneda's letters. Anales del Jardin Botanico de Madrid. Julio 57(1): 97-107. {a} Real Jardin Botanico, CSIC, Plaza de Murillo 2, E-28014, Madrid, Spain

Nozue, M., D. Arakawa, et al. (1999). Activation by proteolysis in vivo of 60-ku latent polyphenol oxidases in sweet potato cells in suspension culture. Journal of Plant Physiology. Sept. 155(3): 297-301. {a} Department of Applied Biology, Faculty of Textile Science and Technology, Shinshu University, 3-15-1 Tokida, Ueda, Nagano, 386-8567, Japan

Nsibande, M. L. and M. A. McGeoch (1999). Sweet potato, Ipomoea batatas (L), cropping practices and perceived production constraints in Swaziland: Implications for pest management. International Journal of Pest Management 45(1): 29-33. Dep. Zool. and Entomol., Univ. Pretoria, Pretoria 0002, South Africa

Okamura, N. K., E. Goto, et al. (1999). Development of gas-exchange measurement system for micropropagated plantlets using 13CO2. Journal of Agricultural Meteorology. March 55(1): 41-45. {a} Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan

Pardales, J. R., Jr., D. M. Banoc, et al. (1999). Root system development of cassava and sweetpotato during early growth stage as affected by high root zone temperature. Plant Production Science. Dec. 2(4): 247-251. {a} Philippine Root Crop Research and Training Center, ViSCA, Baybay, Leyte, 6521-A, Philippines

Perez, T. F. and T. S. Perez (1999). Sweet potatoes (Ipomoea batatas (Lin) Lam), mutation breeding cv. Cane. Alimentaria . May 36(302): 135-138. {a} Instituto de Investigaciones Fundamentales en Agricultura Tropical "Alejandro de Humboldt", Calle 2, esq. 1, Santiago de las Vegas, Ciudad de La Habana, Cuba

Saad, M. S., S. A. S. Ali, et al. (1999). Effects of Azospirillum inoculation on sweetpotato grown on sandy tin-tailing soil. Communications in Soil Science and Plant Analysis. June 30(11-12): 1583-1592. {a} Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Malaysia

Sawada, S., N. Sakai, et al. (1999). Feed-forward effects on the photosynthetic source-sink balance in single-rooted leaves of sweet potato. Plant Production Science. June 2(2): 87-91. {a} Department of Biofunctional Science, Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, 036-8560, Japan

Schultheis, J. R., S. A. Walters, et al. (1999). In-row plant spacing and date of harvest of 'Beauregard' sweetpotato affect yield and return on investment. Hortscience . Dec. 34(7): 1229-1233. {a} Department of Horticultural Science, North Carolina State University, Raleigh, NC, 27695-7609, USA

Sillitoe, P. and R. S. Shiel (1999). Soil fertility under shifting and semi-continuous cultivation in the Southern Highlands of Papua New Guinea. Soil Use and Management 15(1): 49-55. {a} Anthropology Department, Durham University, Durham, DH1 3HN, UK

Stevens, C., V. A. Khan, et al. (1999). Induced resistance of sweetpotato to Fusarium root rot by UV-C hormesis. Crop Protection. Aug. 18(7): 463-470. {a} George Washington Carver Agricultural Experiment Station, Agricultural Sciences, Tuskegee University, Tuskegee Inst., Tuskegee, AL, 36088, USA

Terahara, N., T. Shimizu, et al. (1999). Six diacylated anthocyanins from the storage roots of purple sweet potato, Ipomoea batatas. Bioscience Biotechnology and Biochemistry. Aug. 63(8): 1420-1424. {a} Department of Food Science and Technology, College of Horticulture, Minami-Kyushu University, Takanabe, Miyazaki, 884-0003, Japan

Thompson, P. G., J. C. Schneider, et al. (1999). Insect resistance in sweetpotato plant introductions. Hortscience . July 34(4): 711-714. {a} Mississippi Agricultural and Forestry Experiment Station, 8320 Highway 15 South, Pontotoc, MS, 38863, USA

Tsukui, A., A. Suzuki, et al. (1999). Stability and composition ratio of anthocyanin pigments from Ipomoea batatas Poir. Nippon Shokuhin Kagaku Kogaku Kaishi 46(3): 148-154. {a} Tokyo Kasei Gakuin Junior College, 22 Sanbancho, Chiyoda-ku, Tokyo, 102-8341, Japan

Uritani, I. (1999). Biochemistry on postharvest metabolism and deterioration of some tropical tuberous crops. Botanical Bulletin of Academia Sinica Taipei. July 40(3): 177-183. {a} 1-62-8, Karayama-cho, Chikusa, Nagoya, 464-0806, Japan

Vieira, I. d. C. and F. O. Fatibello (1999). L-cysteine determination using a polyphenol oxidase-based inhibition flow injection procedure. Analytica Chimica Acta. Nov. 399(3): 287-293. {a} Grupo de Quimica Analitica, Departamento de Quimica, Centro de Ciencias Exatas e de Tecnologia, Universidade Federal de Sao Carlos, Rod. Washington Luiz Km 235, CEP 13560-970, Sao Carlos, SP, Brazil

Wang, H. L., P. D. Lee, et al. (1999). Effect of sorbitol induced osmotic stress on the changes of carbohydrate and free amino acid pools in sweet potato cell suspension cultures. Botanical Bulletin of Academia Sinica Taipei. July 40(3): 219-225. {a} Institute of Biological Chemistry, Academia Sinica, Taipei, 107, Taiwan

Wang, J. S., M. Sato, et al. (1999). High frequency plant regeneration in leaf and petiole explant cultures of sweet potato. Memoirs of the Faculty of Agriculture Kagoshima University. March 35(43): 1-5. {a} Laboratory of Crop Science, Lyan Agricultural University, Lyan, China

Wang, S. J., K. W. Yeh, et al. (1999). Molecular characterization and expression of starch granule-bound starch synthase in the sink and source tissues of sweet potato. Physiologia Plantarum. July 106(3): 253-261. {a} Department of Botany, National Taiwan University, Taipei, Taiwan

Wang, S. J., K. W. Yeh, et al. (1999). Light-induced circadian expression of starch granule-bound starch synthase gene in cell suspension cultures of sweet potato. Taiwania . June 44(2): 202-211. {a} Department of Botany, National Taiwan University, Taipei, 106, Taiwan

Wheeler, R. M., C. L. Mackowiak, et al. (1999). Effects of CO2 on stomatal conductance: Do stomata open at very high CO2 concentrations? Annals of Botany London 83(3): 243-251. {a} NASA Biomedical Office, Kennedy Space Center, FL, 32899, USA

Wilman, D., Y. Ji, et al. (1999). In vitro digestibility, breakdown when eaten and physical structure of stovers and straws compared with lucerne hay and sweet potato haulm. Journal of Agricultural Science. June 132(4): 491-498. {a} Welsh Institute of Rural Studies, University of Wales, Aberystwyth, Ceredigion, SY23 3AL, UK

Wilman, D., L. Wen, et al. (1999). Intake and digestibility of diets derived from stovers and straws compared with lucerne hay and sweet potato haulm. Journal of Agricultural Science 132(2): 207-213. {a} Welsh Institute of Rural Studies, University of Wales, Aberystwyth, Ceredigion, SY23 3AL, UK

Yoshimoto, M., S. Okuno, et al. (1999). Antimutagenicity of sweetpotato (Ipomoea batatas) roots. Bioscience Biotechnology and Biochemistry. March 63(3): 537-541. {a} Department of Upland Farming, Kyushu National Agricultural Experiment Station, Miyakonojo, Miyazaki, 885-0091, Japan

Yoshinaga, M., O. Yamakawa, et al. (1999). Genotypic diversity of anthocyanin content and composition in purple-fleshed sweet potato (Ipomoea batatas (L.) Lam). Breeding Science. March 49(1): 43-47. {a} Department of Upland Farming, Kyushu National Agricultural Experiment Station (KNAES), 6644 Yokoichi, Miyakonojo, Miyazaki, 885-0091, Japan

Zobayed, S. M. A., C. Kubota, et al. (1999). Development of a forced ventilation micropropagation system for large-scale photoautotrophic culture and its utilization in sweet potato. In Vitro Cellular and Developmental Biology Plant. July Aug 35(4): 350-355. {a} Laboratory of Environmental Control Engineering, Faculty of Horticulture, Chiba University, Matsudo, Chiba, 271-8510, Japan

Afek, U., J. Orenstein, et al. (1998). Increased quality and prolonged storage of sweet potatoes in Israel. Phytoparasitica 26(4): 307-312. Dep. Postharvest Sci. Fresh Produce, ARO, Gilat Exp. Stn., M.P. Negev 2, 85280, Israel

Ahn, Y. S., B. C. Jeong, et al. (1998). A new sweetpotato (Ipomoea batatas (L.) Lam) cultivar, "Younmi" for both food and starch. RDA Journal of Crop Science. Dec. 40(2 Part 2): 134-141. {a} Mokpo Experiment Station, National Honam Agricultural Experiment Station, RDA, Muan, 534-830, South Korea

Ascerhi, J. L. R., G. M. E. Bernal, et al. (1998). Production of snacks from blends of broken rice and sweet potato using thermoplastic extrusion: Part I. Chemical characterization, expansion index, and apparent density. Alimentaria 35(293): 70-77. {a} Centro Nac. Pesquisa Tecnol. Agroind. Alimentos, CTAA-EMBRAPA, Av. das Americas 29501, Guaratiba-RJ, CEP 23020-470 Rio de Janeiro, Brazil

Ascheri, J. L. R., G. M. E. Bernal, et al. (1998). Production of snacks from blends of broken rice and sweet potato using thermoplastic extrusion: Part II. Functional and sensorial characteristics. Alimentaria 35(293): 79-86. {a} Centro Nac. Pesquisa Tecnol. Agroindustrial Alimentos, CTAA-EMBRAPA, Av. das Americas 29501, Guaratiba-RJ, CEP 23020-470 Rio de Janeiro, Brazil

Clark, C. A., C. Chen, et al. (1998). Diversity within Streptomyces ipomoeae based on inhibitory interactions, rep-PCR, and plasmid profiles. Phytopathology 88(11): 1179-1186. {a} Dep. Plant Pathol. Crop Physiol., La. State Univ. Agric. Cent., La. Agric. Exp. Stn., Baton Rouge, LA 70803-1720, USA

Clark, C. A., M. W. Hoy, et al. (1998). First report of Erwinia carotovora subsp. carotovora causing bacterial root rot of sweetpotato (Ipomoea batatas) in Louisiana. Plant Disease 82(1): 129. Dep. Plant Pathol. Crop Physiol., Louisiana State Univ. Agricultural Cent., Baton Rouge, LA 70803-1720, USA

Clark, C. A., J. W. Hyun, et al. (1998). Relationships among wilt-inducing isolates of Fusarium oxysporum from sweetpotato and tobacco. Plant Disease 82(5): 530-536. {a} Dep. Plant Pathol. Crop Physiol., Louisiana Agric. Exp. Stn., Louisiana State Univ. Agric. Cent., Baton Rouge, LA 70803-1720, USA

Colinet, D., M. Nguyen, et al. (1998). Differentiation among potyviruses infecting sweet potato based on genus- and virus-specific reverse transcription polymerase chain reaction. Plant Disease 82(2): 223-229. {a} Fac. Univ. des Sci. Agronomiques, Unite de Phytopathol., 13 Ave. Marechal Juin, 5030 Gembloux, Belgium

Da, C. V. I. and F. O. Fatibello (1998). Spectrophotometric determination of methyldopa and dopamine in pharmaceutical formulations using a crude extract of sweet potato root (Ipomoea batatas (L.) Lam.) as enzymatic source. Talanta 46(4): 559-564. {a} Dep. Quim., Grupo Quim. Anal., Cent. Ciencias Exatas Tecnol., Univ. Fed. Sao Carlos, Caixa Postal 676, CEP 13.560-970, Sao Carlos, SP, Brazil

Dhir, S. K., J. Oglesby, et al. (1998). Plant regeneration via somatic embryogenesis, and transient gene expression in sweet potato protoplasts. Plant Cell Reports 17(9): 665-669. {a} Plant Sci., Agric. Res. Stn., Fort Valley State Univ., Fort Valley, GA 31030, USA

Eguchi, T., M. Kitano, et al. (1998). Growth of sweetpotato tuber as affected by the ambient humidity. Biotronics 27: 93-96. {a} Biotron Institute, Kyushu University 12, Fukuoka, 812-8581, Japan

Eguchi, T., M. Kitano, et al. (1998). Water relations and dynamics of tuber growth rate in sweet potato plants (Ipomoea batatas Lam.). Environment Control in Biology 36(2): 91-95. Biotron Inst., Kyushu Univ. 12, Fukuoka 812-8581, Japan

Eicken, C., F. Zippel, et al. (1998). Biochemical and spectroscopic characterization of catechol oxidase from sweet potatoes (Ipomoea batatas) containing a type-3 dicopper center. FEBS Letters 436(2): 293-299. {a} Anorganisch-Chemisches Inst., Univ. Muenster, Wilhelm-Klemm-Strasse 8, 48149 Muenster, Germany

Garcia, A. M. and W. M. Walter, Jr. (1998). Physicochemical characterization of starch from Peruvian sweetpotato selections. Starch 50(8): 331-337. {a} USDA, ARS, N.C. State Univ., Raleigh, NC 27695-7624, USA

Garcia, L. R. and J. Herrera (1998). Milk production from pastures and cassava (Manihot sculenta) or sweet potato (Ipomea batata) integral forage plant supplementation. Cuban Journal of Agricultural Science 32(1): 29-32. Inst. Ciencia Anim., Apartado 24, San Jose de las Lajas, La Habana, Cuba

Gibson, R. W., G. C. Kaitisha, et al. (1998). Identification of the East African strain of sweet potato chlorotic stunt virus as a major component of sweet potato virus disease in Southern Africa. Plant Disease 82(9): 1063. {a} Natural Resources Inst., Univ. Greenwich, Chatham, Maritime, Kent ME4 4TB, UK

Haberle, S. G. (1998). Late quaternary vegetation change in the Tari Basin, Papua New Guinea. Palaeogeography Palaeoclimatology Palaeoecology 137(1-2): 1-24. {a} Dep. Plant Sci., Univ. Cambridge, Downing St., Cambridge CB2 3EA, UK

Hou, W. C., Y. C. Chen, et al. (1998). Chitinase activity of sweet potato (Ipomoea batatas (L.) Lam var. Tainong 57). Botanical Bulletin of Academia Sinica Taipei 39(2): 93-97. {a} Inst. Bot., Acad. Sinica, Nankang, Taipei 115, Taiwan

Hou, W. C. and Y. H. Lin (1998). Activity staining on polyacrylamide of trypsin inhibitors from leaves of sweet potato (Ipomoea batatas L. Lam) varieties. Electrophoresis 19(2): 212-214. {a} Inst. Botany, Academia Sinica, Nankang, Taipei 115, Taiwan

Huh, G. H., B. W. Yun, et al. (1998). Overproduction of sweet potato peroxidases in transgenic tobacco plants. Phytochemistry Oxford 47(5): 695-700. {a} Plant Biochem. Res. Unit, Korea Res. Inst. Biosci. Biotechnol., P.O. Box 115, Yusong, Taejon 305-600, South Korea

Hyun, J. W. and C. A. Clark (1998). Analysis of Fusarium lateritium using RAPD and rDNA RFLP techniques. Mycological Research 102(10): 1259-1264. Dep. Plant Pathol. Crop Physiol., La. Agric. Experiment Station, LSU Agric. Center, Baton Rouge, LA 70803-1720, USA

Imai, T., S. Karita, et al. (1998). L-Galactono-gamma-lactone dehydrogenase from sweet potato: Purification and cDNA sequence analysis. Plant and Cell Physiology 39(12): 1350-1358. {a} Dep. Veg. Breed., Natl. Res. Inst. Veg., Ornamental Plants Tea, Ano, Mie 514-2392, Japan

Innami, S., K. Tabata, et al. (1998). Dried green leaf powders of Jew's mellow (Corchorus), persimmon (Diosphyros kaki) and sweet potato (Ipomoea batatas poir) lower hepatic cholesterol concentration and increase fecal bile acid excretion in rats fed a cholesterol-free diet. Plant Foods for Human Nutrition Dordrecht 52(1): 55-65. {a} Dep. Nutrition, Tokyo University Agriculture, Setagaya-ku, Tokyo 156, Japan

Islam, A. F. M. S., Y. Kitaya, et al. (1998). Sweetpotato cultivation with rice husk charcoal as a soil aerating material under wet lowland field conditions. Environment Control in Biology 36(1): 13-20. Coll. Agric., Osaka Prefecture Univ., Sakai, Osaka 599-8531, Japan

Iwe, M. O., I. Wolters, et al. (1998). Behaviour of gelatinisation and viscosity in soy-sweet potato mixtures by single screw extrusion: A response surface analysis. Journal of Food Engineering 38(3): 369-379. {a} Dep. Food Sci. Technol., Univ. Agric., P.M.B. 2373 Makurdi, Nigeria

Iwuoha, C. I. and M. I. Nwakanma (1998). Density and viscosity of cold four pastes of cassava (Manihot esculenta Grantz), sweet potato (Ipomoea batatas L. Lam) and white yam (Dioscorea rotundata Poir) tubers as affected by concentration and particle size. Carbohydrate Polymers 37(1): 87-101. Dep. Food Sci. Technol., Federal Univ. Technol., Owerri, PMB 1526, Owerri, Imo State, Nigeria

Jadhav, A. C., S. A. Memane, et al. (1998). Evaluation of bio-fertilizers in respect to growth and yield attributing parameters in sweet potato. Journal of Maharashtra Agricultural Universities. Jan. 23(1): 80-82. {a} Mahatma Phule Krishi Vidyapeeth, Rahuri, 413 722, India

Jadhav, A. C., S. A. Memane, et al. (1998). Economics of the use of bacterial inoculants in sweet potato. Journal of Maharashtra Agricultural Universities. Jan. 23(1): 33-35. {a} Mahatma Phule Krishi Vidyapeeth, Rahuri, 413 722, India

K, o. L. M., E. E. Carey, et al. (1998). Influence of age, farming site, and boiling on pro-vitamin A content in sweet potato (Ipomoea batatas (L.) Lam.) storage roots. Journal of Food Composition and Analysis 11(4): 305-321. {a} International Potato Center (CIP), Sub-Saharan Africa Region, Nairobi, Kenya

Karyeija, R. F., R. W. Gibson, et al. (1998). Resistance to sweet potato virus disease (SPVD) in wild East Africa Ipomoea. Annals of Applied Biology 133(1): 39-44. {a} Kawanda Agricultural Research Institute, P.O. Box 7065, Kampala, Uganda

Karyeija, R. F., R. W. Gibson, et al. (1998). The significance of sweet potato feathery mottle virus in subsistence sweet potato production in Africa. Plant Disease 82(1): 4-15. {a} Kawanda Agric. Res. Inst., Kampala, Uganda

Komaki, K., H. N. Regmi, et al. (1998). Morphological and RAPD pattern variations in sweetpotato and its closely related species. Breeding Science 48(3): 281-286. {a} Natl. Agric. Res. Cent., Tsukuba, Ibaraki 305-8666, Japan

Kusano, S., H. Abe, et al. (1998). Study of antidiabetic activity of white skinned sweet potato (Ipomoea batatas L.): Comparison of normal and streptozotocin induced diabetic rats and hereditary diabetic mice. Nippon Nogeikagaku Kaishi 72(9): 1045-1052. Res. Inst., Fuji Sangyo Co. Ltd., Tamura-cho 1301, Marugame-shi, Kagawa 763-0071, Japan

Li, C. C. and M. S. Guu (1998). The influenced of qualities of different harvesting seasons of leafy sweet potato (Ipomoea batatas). Journal of the Agricultural Association of China(182): 12-26. {a} Dep. Agron., Natl. Chung Hsing Univ., Taichung, Taiwan

Lotrakul, P., R. A. Valverde, et al. (1998). Detection of a geminivirus infecting sweet potato in the United States. Plant Disease 82(11): 1253-1257. {a} Dep. Plant Pathol. Crop Physiology, Louisiana Agricultural Experiment Station, Louisiana State Univ. Agricultural Cent., Baton Rouge, LA 70803, USA

Mitchell, T. D., A. S. Bhagsari, et al. (1998). Electroporation-mediated transient gene expression in intact cells of sweetpotato. In Vitro Cellular and Developmental Biology Plant 34(4): 319-324. {a} Plant Sci., Agric. Res. Stn., Fort Valley State Univ., Fort Valley, CA 31030-1017, USA

Montes, L., R. Crozzoli, et al. (1998). Response of sweet potato selections to the southern root-knot nematode Meloidogyne incognita in Venezuela. Nematropica . June 28(1): 113-117. {a} Facultad de Agronomia, Universidad Central de Venezuela, Instituto de Zoologia Agricola, Maracay, Venezuela

Moran, R., R. Garcia, et al. (1998). Transgenic sweet potato plants carrying the delta-endotoxin gene from Bacillus thuringiensis var. tenebrionis. Plant Science Shannon 139(2): 175-184. {a} Centro Ingenieria Genet. Biotecnol., P.O. Box 387, C.P. 70 100, Camaguey, Cuba

Mortley, D. G., P. A. Loretan, et al. (1998). Biocompatibility of sweetpotato and peanut in a hydroponic system. Hortscience 33(7): 1147-1149. Dep. Agric. Sci., Tuskegee Univ., Tuskegee, AL 36088, USA

Mukherjee, A., B. K. Debata, et al. (1998). Cytology of callus and regenerated plants of sweet potato (Ipomoea batatas L.). Cytobios 96(382): 109-118. {a} Regional Research Laboratory, Council of Scientific and Industrial Research, Bhubaneswar, OR, 751 013, India

Nirenberg, H. I. and D. K. O (1998). New Fusarium species and combinations within the Gibberella fujikuroi species complex. Mycologia 90(3): 434-458. {a} Biol. Bundesanstallt Land Forstwirtschaft, Inst. Mikrobiol., Koenigin-Luise-Strasse 19, D-14195 Berlin, Germany

Nishiguchi, M., M. Mori, et al. (1998). Virus resistant transgenic sweet potato with the CP gene: Current challenge and perspective of its use. Phytoprotection 79(Suppl): 112-116. {a} National Institute of Agrobiological Resources, 2-1-2 Kan-nondai, Tsukuba, Ibaraki, 305-8602, Japan

Niu, G., T. Kozai, et al. (1998). A system for measuring the in situ CO2 exchange rates of in vitro plantlets. Hortscience 33(6): 1076-1078. Fac. Hortic., Chiba Univ., Matsudo, Chiba 2718510, Japan

Nozue, M., M. Souri, et al. (1998). Purification and characterization of two isoforms of chlorogenic acid oxidase from sweet potato cells in suspension culture. Journal of Plant Physiology 153(5-6): 552-557. {a} Dep. Applied Biol., Fac. Textile Sci. Technol., Shinshu Univ., 3-15-1 Tokida, Ueda, Nagano 386, Japan

Padmanabhan, K., D. J. Cantliffe, et al. (1998). Computer vision analysis of somatic embryos of sweet potato (Ipomoea batatas (L.) Lam.) for assessing their ability to convert to plants. Plant Cell Reports 17(9): 681-684. {a} 8633 Datapoint Drive, N. 211, Phase II, San Antonio, TX 78229, USA

Padmanabhan, K., D. J. Cantliffe, et al. (1998). A comparison of shoot-forming and non-shoot-forming somatic embryos of sweet potato (Ipomoea batatas (L.) Lam.) using computer vision and histological analyses. Plant Cell Reports 17(9): 685-692. {a} 8633 Datapoint Drive, No. 211, Phase II, San Antonio, TX 78229, USA

Patil, D. A. (1998). Census of the genus Ipomoea L. in Dhule district (Maharashtra). Journal of Phytological Research 11(2): 121-126. {a} P.G. Department of Botany, S.S.V.P.S's L.K.Dr.P.R. Ghogrey Science College, Dhule, MAH, 424 005, India

Peixoto, J. R., F. M. Ferraz, et al. (1998). Screening of sweet potato genotypes resistant to the rood-knot nematode (Meloidgyne spp.). Fitopatologia Brasileira 23(1): 51-53. {a} Fundacao Univ. Brasilia, Asa Norte, Caixa Posal 04508, CEP 70910 900, Brazil

Piperno, D. R. and I. Holst (1998). The presence of starch grains on prehistoric stone tools from the humid neotropics: Indications of early tuber use and agriculture in Panama. Journal of Archaeological Science 25(8): 765-776. STRI, Unit 0948, APO AA 34002-0948, USA

Ramanjini, G. P. H. and C. S. Prakash (1998). Herbicide glyphosate at sublethal concentrations enhances somatic embryo development in sweetpotato (Ipomoea batatas L.). Current Science Bangalore 75(5): 508-510. {a} Cent. Plant Biotechnol., Tuskegee Univ., Tuskegee, AL 36088, USA

Sagredo, B., P. Hinrichsen, et al. (1998). Genetic variation of sweet potatoes (Ipomoea batatas L.) cultivated in Chile determined by RAPDs. Euphytica 101(2): 193-198. Inst. Invest. Agropecuarias, Estacion Exp. La Platina, Casilla 439-3, Santiago, Chile

Singh, S., N. G. Lewis, et al. (1998). Nitrogen recycling during phenylpropanoid metabolism in sweet potato tubers. Journal of Plant Physiology 153(3-4): 316-323. {a} Inst. Biol. Chem., Washington State Univ., Pullman, WA 99164-6340, USA

Singh, S. S., S. M. Prasad, et al. (1998). Potential of rainfed winter crops after photosensitive rice (Oryza sativa) in lowland calcareous soils of north Bihar. Indian Journal of Agronomy. Dec. 43(4): 628-631. {a} Department of Agronomy, Rajendra Agricultural University, Pusa, Samastipur, Bihar, 848 125, India

Smit, N. E. J. M. and H. A. van (1998). Biology of the African sweetpotato weevil species Cylas puncticollis (Boheman) and C. brunneus (Fabricius) (Coleoptera: Apionidae). Insect Science and its Application. April June 18(2): 93-100. {a} Uganda Office, International Potato Centre (CIP), Kampala, Uganda

Song, Y. K. G. and Y. Zhang (1998). The expression of gene promoter from Ipomoea batatas L. in Agrobacterium tumefaciens. Sichuan Daxue Xuebao Ziran Kexueban 35(3): 472-476. Dep. Biotechnol., Sichuan Univ., Chengdu, Taiwan

Vieira, I. D. C. and F. O. Fatibello (1998). Flow injection spectrophotometric determination of total phenols using a crude extract of sweet potato root (Ipomoea batatas (L.) Lam.) as enzymatic source. Analytica Chimica Acta 366(1-3): 111-118. {a} Grupo de Quimica Analitica, Departamento de Quimica, Centro de Ciencias Exatas e de Tecnologia, Universidade Federal de Sao Carlos, Caixa Postal 676, CEP 13.560-970-Sao Carlos, SP, Brazil

Vimala, B. and K. R. Lakshmi (1998). Genotype X environment interaction in sweet potato. Indian Journal of Genetics and Plant Breeding 58(1): 121-123. {a} Cent. Tuber Crops Res. Inst., Trivandrum 695 017, India

Wang, J. S., T. Sakai, et al. (1998). Characteristics of regenerated plant from protoplast fusions between sweet potato and its related species. Memoirs of the Faculty of Agriculture Kagoshima University 34(43): 71-76. Lab. Crop Sci., Fac. Agric., Kagoshima Univ., Kagoshima, Japan

Wang, J. S., M. Sato, et al. (1998). Efficient plant regeneration from protoplasts of sweet potato, Ipomoea batatas (L.) Lam. Memoirs of the Faculty of Agriculture Kagoshima University 34(43): 65-70. Lab. Crop Sci., Fac. Agric. Kagoshima Univ., Kagoshima, Japan

Yoneyama, T., J. Terakado, et al. (1998). Natural abundance of 15N in sweet potato, pumpkin, sorghum and castor bean: Possible input of N2-derived nitrogen in sweet potato. Biology and Fertility of Soils 26(2): 152-154. {a} Plant Nutr. Diagnosis Lab., Natl. Agric. Res. Center., Kannondai 3-1-1, Tsukuba, Ibaraki 305, Japan

Yuan, Z. F., S. Y. Hu, et al. (1998). Cytoplasmic inheritance of sweet potato: With respect to the study of plastids and mitochondria and the existence of their DNA in sperm cells. Acta Botanica Sinica 40(3): 200-203. {a} Coll. Life Sci., Peking Univ., Beijing 1000871, China

Yung, B. W., G. H. Huh, et al. (1998). Antioxidant enzymes in Nicotiana cells containing an Ipomoea peroxidase gene. Phytochemistry Oxford 48(8): 1287-1290. {a} Plant Biochem., Res. Unit, Korea Res. Inst. Biosci. and Biotechnol., P.O. Box 115, Yusong, Taejon 305-600, South Korea

Zehnder, G. W., T. H. Briggs, et al. (1998). Management of whitefringed beetle (Coleoptera: Curculionidae) grub damage to sweet potato with adulticide treatments. Journal of Economic Entomology 91(3): 708-714. {a} Dep. Entomology, 206 Extension Hall, Auburn University, Auburn, AL 36849-5629, USA

Zhang, D., W. W. Collins, et al. (1998). Genotype and fertilization effects on trypsin inhibitor activity in sweetpotato. Hortscience 33(2): 225-228. {a} Dep. Genet. Resour., Int. Potato Cent., Apartado 1558, Lima, Peru

Zhang, D., M. Ghislain, et al. (1998). RAPD variation in sweetpotato (Ipomoea batatas (L.) Lam) cultivars from South America and Papua New Guinea. Genetic Resources and Crop Evolution 45(3): 271-277. Int. Potato Cent., Lima, Peru

Agwunobi, L. N., A. Onifade, et al. (1997). Sweetpotato (Ipomoea batatas (L.) Lam.) tuber meal as a substitute for maize (Zea mays L.) grain in rabbit ration. Tropical Agriculture. April 74(2): 168-171. {a} Department of Animal Science, Faculty of Agriculture, University of Calabar, Calabar, Nigeria

Al, M. S., M. H. Bhatti, et al. (1997). Optimisation of somatic embryogenesis in fourteen cultivars of sweet potato (Ipomoea batatas (L.) Lam.). Plant Cell Reports 16(10): 710-714. {a} Sch. Biol. Biochem., Univ. Bath, Claverton Down, Bath BA2 7AY, UK

Almazan, A. M., F. Begum, et al. (1997). Nutritional quality of sweetpotato greens from greenhouse plants. Journal of Food Composition and Analysis 10(3): 246-253. {a} George Washington Carver Agric. Exp. Stn., Coll. Agric. Environ. and Nat. Sci., Tuskegee Univ., Tuskegee, AL 36088, USA

Almazan, A. M. and X. Zhou (1997). Biomass yield and composition of sweetpotato grown in a nutrient film technique system. Plant Foods for Human Nutrition Dordrecht 50(3): 259-268. {a} George Washington Carver Agric. Exp. Stn., Coll. Agric. Environ. Natural Sci., Tuskegee Univ., Tuskegee, AL 36088, USA

Almeida, A. M. S. F. D., M. S. N. D. A. Santos, et al. (1997). Host status of selected plant species for Meloidogyne megadora. Nematropica 27(1): 1-6. {a} Dep. Zoologia, Inst. do Ambiente e Vida, Univ. de Coimbra, Portugal

Ameny, M. A. and P. W. Wilson (1997). Relationship between Hunter color values and beta-carotene contents in white-fleshed African sweetpotatoes (Ipomoea batatas Lam). Journal of the Science of Food and Agriculture 73(3): 301-306. {a} Technol., Makerere Univ., PO Box 7062, Kampala, Uganda

Bae, J. M. and J. R. Liu (1997). Molecular cloning and characterization of two novel isoforms of the small subunit of ADPglucose pyrophosphorylase from sweet potato. Molecular and General Genetics 254(2): 179-185. {a} Plant Cell Mol. Biol. Res. Unit, Korea Res. Inst. Biosci. Biotechnol., PO Box 115, Yusong, Taejon 305-600, South Korea

Baek, N. I., E. M. Ahn, et al. (1997). Development of biologically active compounds from edible plant sources-I. Isolation of major components from the tuber of Ipomoea batatas Lam. Agricultural Chemistry and Biotechnology 40(6): 583-587. {a} Kyung Hee Univ., Coll. Ind., Dep. Life Sci. Resources, Inst. Life Sci. Resour., Yongin 449-701, South Korea

Bhatti, M. H., T. Percival, et al. (1997). Cryopreservation of embryogenic tissue of a range of genotypes of sweet potato (Ipomoea batatas (L) Lam.) using an encapsulation protocol. Plant Cell Reports 16(11): 802-806. {a} Sch. Biol. Biochem., Univ. Bath, Claverton Down, Bath BA2 7AY, UK

Blakesley, D., T. Percival, et al. (1997). A simplified protocol for cryopreservation of embryogenic tissue of sweet potato (Ipomoea batatas (L) LAM) utilising sucrose preculture only. Cryo Letters 18(2): 77-80. {a} Sch. Biol. Biochem., Univ. Bath, Claverton Down, Bath BA2 7AY, UK

Chavi, F., A. I. Robertson, et al. (1997). Survey and characterization of viruses in sweetpotato from Zimbabwe. Plant Disease 81(10): 1115-1122. {a} Dep. Virol., Wageningen Agric. Univ., Binnenhaven 11, 6709 PD Wageningen, Netherlands

Chen, J. C., Y. M. Chen, et al. (1997). Isolation and characterization of new sporamin gene members from sweet potato (Ipomoea batatas Lam.). Taiwania 42(1): 34-42. {a} Dep. Botany, National Taiwan Univ., Taipei 106, Taiwan

Eguchi, T., M. Kitano, et al. (1997). Measurement of diurnal changes in tuber growth of sweet potato plants. Biotronics 26: 67-72. Biotron Inst., Kyushu Univ. 12, Fukuoka 812-8581, Japan

Eguchi, T., M. Kitano, et al. (1997). On-line system for volume measurement in sweet potato tuber. Biotronics 26: 103-106. Biotron Inst., Kyushu Univ. 12, Fukuoka 812-8581, Japan

Fatibello, F. O. and I. D. C. Vieira (1997). Flow injection spectrophotometric determination of sulfite using a crude extract of sweet potato root (Ipomoea batatas (L.) Lam.) as a source of polyphenol oxidase. Analytica Chimica Acta 354(1-3): 51-57. {a} Grupo Quim. Anal., Dep. Quim., Centro Ciencias Exactas Tecnol., Univ. Fed. Sao Carlos, Rod. Washington Luiz Km 235, Caixa Postal 676, CEP 13560-970, Sao Carlos, SP, Brazil

Fey, J., A. Dietrich, et al. (1997). Evolutionary aspects of "chloroplast-like" trnN and trnH expression in higher-plant mitochondria. Current Genetics 32(5): 358-360. {a} Inst. Biologie Moleculaire Plantes, UPRA0406, CNRS, Univ. Louis Pasteur, 12 rue du General Zimmer, F-67084 Strasbourg Cedex, France

Gibson, R. W., R. O. M. Mwanga, et al. (1997). Apparent absence of viruses in most symptomless field-grown sweet potato in Uganda. Annals of Applied Biology 130(3): 481-490. {a} Nat. Resources Inst., Univ. Greenwich, Central Ave., Chatham Maritime, Kent ME4 4TB, UK

Goda, Y., T. Shimizu, et al. (1997). Two acylated anthocyanins from purple sweet potato. Phytochemistry Oxford 44(1): 183-186. Natl. Inst. Health Sci., 18-1 Kamiyoga 1-chome, Setagaya-ku, Tokyo 158, Japan

Goncalves, P. A. S. (1997). Survey of insects associated with sweet potato, Ipomoea batatas, with water traps, in Ituporanga, Santa Catarina. Anais da Sociedade Entomologica do Brasil 26(1): 199-203. EPAGRI S.A., Caixa postal 121, CEP 88400-000, Ituporanga, SC, Brazil

Guertal, E. A., E. M. Bauske, et al. (1997). Crop rotation effects on sweet potato yield and quality. Journal of Production Agriculture 10(1): 70-73. {a} Dep. Agronomy Soils, Auburn Univ., Auburn, AL 36849, USA

Guertal, E. A. and J. A. Kemble (1997). Nitrogen rate and within-row plant spacing effects on sweetpotato yield and grade. Journal of Plant Nutrition 20(2-3): 355-360. Dep. Agronomy Soils, Auburn University, Auburn, AL 36849, USA

Harvey, C. F., G. P. Gill, et al. (1997). Assessing relationships of kumara cultivars by RAPD analysis. New Zealand Journal of Botany 35(4): 479-485. Hortic. and Food Res. Inst. New Zealand, Mount Albert Res. Cent., Private Bag 21 169, Auckland, New Zealand

Hou, W. C. and W. H. Lin (1997). Polyamine-bound trypsin inhibitors in sweet potato (Ipomoea batatas (L.) Lam cv. Tainong 57) storage roots, sprouted roots and sprouts. Plant Science Shannon 126(1): 11-19. {a} Inst. Botany, Academa Sinica, Nankang, Taipei 115, Taiwan

Hou, W. C. and Y. H. Lin (1997). Egg white lysozyme purification with sweet potato (Ipomoea batatas (L.) Lam) leaf preparations. Journal of Agricultural and Food Chemistry 45(11): 4487-4489. {a} Inst. Botany, Academia Sinica, Nankang, Taipei 115, Taiwan

Hou, W. C. and Y. H. Lin (1997). Dehydroascorbate reductase and monodehydroascorbate reductase activities of trypsin inhibitors, the major sweet potato (Ipomoea batatas (L.) Lam) root storage protein. Plant Science Shannon 128(2): 151-158. {a} Inst. Bot., Acad. Sinica, Nankang, Taipei 115, Taiwan

Huh, G. H., S. J. Lee, et al. (1997). Molecular cloning and characterization of cDNAs for anionic and neutral peroxidases from suspension cultured-cells of sweet potato and their differential expression in response to stress. Molecular and General Genetics 255(4): 382-391. {a} Plant Biochem. Res. Unit, Res. Inst. Bioscience Biotechnol., P.O. Box 115, Yusong, Taejon 305-600, South Korea

Hulshof, P. J. M., C. Xu, et al. (1997). Application of a validated method for the determination of provitamin A carotenoids in Indonesian foods of different maturity and origin. Journal of Agricultural and Food Chemistry 45(4): 1174-1179. Dep. Hum. Nutr., Wageningen Agricultural Univ., P.O. Box 8129, 6700 EV Wageningen, Netherlands

Imanishi, S., N. K. Kito, et al. (1997). A major jasmonate-inducible protein of sweet potato, ipomoelin, is an ABA-independent wound-inducible protein. Plant and Cell Physiology 38(6): 643-652. {a} Lab. Biochemistry Sch. Agric. Sci., Nagoya Univ., Chikusa, Nagoya 464-01, Japan

Islam, A. F. M. S., Y. Kitaya, et al. (1997). Effects of placing rice straw, wheat straw and rice husks in soil ridges on growth, morphological characteristics and yield of sweetpotato in wet lowlands. Journal of Agricultural Meteorology 53(3): 201-207. Coll. Agric., Osaka Prefecture Univ., Sakai, Osaka 599-8531, Japan

Islam, A. F. M. S., Y. Kitaya, et al. (1997). Growth characteristics and yield of sweetpotato grown by a modified hydroponic cultivation method under field conditions in a wet lowland. Environment Control in Biology 35(2): 123-129. Coll. Agriculture, Osaka Prefecture Univ., Sakai, Osaka 593, Japan

Jansson, R. K. and S. H. Lecrone (1997). Effect of sweet potato cultivar on efficacy and persistence of entomopathogenic nematodes for control of Cylas formicarius. Nematropica 27(1): 41-52. {a} Rohm Hass Co., 727 Norristown Road, P.O. Box 904, Spring House, PA 19477-0904, USA

Jarret, R. L. (1997). Effects of chemical growth retardants on growth and development of sweetpotato (Ipomoea batatas (L.) Lam.) in vitro. Journal of Plant Growth Regulation 16(4): 227-231. {a} USDA/ARS, Plant Genet. Resources Unit, 1109 Experiment St., Griffin, GA 30223, USA

Khatijah, I. and H. Patimah (1997). Physico-chemical properties of cross-linked tuber starches. Journal of Tropical Agriculture and Food Science 25(2): 179-185. Food Technol. Cent., MARDI Headquarters, P.O. Box 12301, 50774 Kuala Lumpur, Malaysia

Koda, Y. (1997). Possible involvement of jasmonates in various morphogenic events. Physiologia Plantarum 100(3): 639-646. Dep. Bot., Fac. Agric., Hokkaido Univ., Sapporo 060, Japan

Lage, C. L. S. and M. A. Esquibel (1997). Growth stimulation produced by methylene blue treatment in sweet potato. Plant Cell Tissue and Organ Culture 48(2): 77-81. Lab. de Fisiologia Vegetal, Instituto de Biofisica Carlos Chagas Filho, UFRJ, CCS, Bl. G, Cidade Universitaria, 21949-900 Rio de Janeiro, Brazil

Lewthwaite, S. L., K. H. Sutton, et al. (1997). Free sugar composition of sweetpotato cultivars after storage. New Zealand Journal of Crop and Horticultural Science 25(1): 33-41. {a} New Zealand Inst. Crop Food Res. Ltd., Pukekohe Res. Centre, Cronin Road RD 1, Pukekohe, New Zealand

Lin, C. T., M. T. Lin, et al. (1997). Cloning and characterization of a cDNA for manganese superoxide dismutase from callus of sweet potato. Journal of Agricultural and Food Chemistry 45(2): 521-525. {a} Inst. Marine Biotechnol., National Taiwan Ocean Univ., 2 Pei-Ning Road, Keelung 2024, Taiwan

Mackeen, M. M., A. M. Ali, et al. (1997). Antinematodal activity of some Malaysian plant extracts against the pine wood nematode, Bursaphelenchus xylophilus. Pesticide Science 51(2): 165-170. {a} Dep. Biotechnol., Univ. Putra, Malaysia, 43400 Serdang, Selangor, Malaysia

Miyatake, T., S. Moriya, et al. (1997). Dispersal potential of male Cylas formicarius (Coleoptera: Brentidae) over land and water. Environmental Entomology 26(2): 272-276. {a} Okinawa Prefectural Agric. Exp. Stn., 4-222 Sakiyama-cho, Naha, Okinawa 903, Japan

Mosha, T. C., R. D. Pace, et al. (1997). Effect of traditional processing practices on the content of total carotenoid, beta-carotene, alpha-carotene and vitamin A activity of selected Tanzanian vegetables. Plant Foods for Human Nutrition Dordrecht 50(3): 189-201. {a} Sokoine Univ. Agric., Dep. Food Sci. Nutr., P.O. Box 3006, Morogoro, Tanzania

Neeser, C., R. Aguero, et al. (1997). Incident photosynthetically active radiation as a basis for integrated management of purple nutsedge (Cyperus rotundus). Weed Science 45(6): 777-783. {a} Crop Sci., Univ. Guelph, Guelph, ON N1G 2W1, Canada

Nguyen, T. T. E. S. and A. Sonnino (1997). Effect of genotype, explant size and medium composition on somatic embryogenesis and plant regeneration in sweetpotato (Ipomoea batatas (L.) Lam.). Journal of Genetics and Breeding 51(1): 63-67. {a} ENEA, Biotechnol. Agric. Div., Casaccia Res. Cent., Via Anguillarese 301, 00060 Rome, Italy

Nozue, M., K. Yamada, et al. (1997). Expression of a vacuolar protein (VP24) in anthocyanin-producing cells of sweet potato in suspension culture. Plant Physiology Rockville 115(3): 1065-1072. {a} Dep. Applied Biol., Fac. Textile Sci. Technol., Shinshu Univ., Ueda 386, Japan

Okoskit, K. and P. G. Thompson (1997). Autopolyploidy versus allopolyploidy and low-density randomly amplified polymorphic DNA linkage maps of sweetpotato. Journal of the American Society for Horticultural Science 122(6): 822-828. {a} Dep. Plant Soil Sci., Mississippi State University, Mississippi State, MS 39762, USA

Osuji, G. O. and W. C. Madu (1997). Regulation of sweetpotato growth and differentiation by glutamate dehydrogenase. Canadian Journal of Botany 75(7): 1070-1078. {a} P.O. Box 2029, Prairie View, TX 77446, USA

Reddy, O. V. S. and S. C. Basappa (1997). Preparation of sweet potato flour and its fermentation to ethanol. Journal of Food Science and Technology 34(2): 108-112. {a} Vrushabha 222, 8th Cross, Gokulam III Stage, Mysore 570 002, India

Seal, D. R., R. B. Chalfant, et al. (1997). Seasonal abundance and mathematical distribution of wireworms and wireworm feeding damage in sweet potato. Journal of Entomological Science 32(3): 311-320. {a} Tropical Res. Educ. Cent., Univ. Florida, 18905 S. W. 280 St., Homestead, FL 33031, USA

Shimabukuro, S., A. Ishikawa, et al. (1997). Efficacy of vapor heat treatments on sweet potato infested with sweet potato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), West Indian sweet potato weeveil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae), and sweet potato vine borer, Omphisa anastomosalis Guenee (Lepidoptera: Pyralidae). Research Bulletin of the Plant Protection Service Japan(33): 35-41. Naha Plant Protection Station, 2-11-1 Minatomachi, Naha 900, Japan

Sihachakr, D., R. Haicour, et al. (1997). Plant regeneration in sweet potato (Ipomoea batatas L., Convolvulaceae). Euphytica 96(1): 143-152. Morphogenese Vegetale Experimentale, Bat, 360 Universite Paris Sud, 91405 Orsay Cedex, France

Singh, A. and M. Singh (1997). Incompatibility of Cuscuta haustoria with the resistant hosts-Ipomoea batatas L. and Lycopersicon esculentum Mill. Journal of Plant Physiology 150(5): 592-596. Dep. Biochenm., Lucknow Univ., Lucknow 226 007, India

Smit, N. E. J. M. (1997). The effect of the indigenous cultural practices of in-ground storage and piecemeal harvesting of sweetpotato on yield and quality losses caused by sweetpotato weevil in Uganda. Agriculture Ecosystems and Environment 64(3): 191-200. Int. Potato Cent., c/o P.O. Box 7878, Kampala, Uganda

Smit, N. E. J. M., F. Lugojja, et al. (1997). The sweetpotato butterfly (Acraea acerata Hew., Nymphalidae): A review. International Journal of Pest Management 43(4): 275-278. {a} Int. Potato Cent., Sub-Saharan Africa Region, PO Box 25171, Nairobi, Kenya

Society, F. L. T. B. (1997). 1996 Annual General Meeting and Symposium of the Society for Low Temperature Biology on Analytical Techniques in Low Temperature Biology, Dundee, Scotland, UK, September 3-6, 1996. Cryo Letters 18(2): 66-76.

Talekar, N. S. (1997). Sources of resistance to sweetpotato weevil (Coleoptera: Apionidae) in sweetpotato vines. Tropical Agriculture. April 74(2): 146-149. {a} Asian Vegetable Research and Development Center, Shanhua, Tainan, Taiwan, 741, China

Teguia, A., R. M. Njwe, et al. (1997). Effects of replacement of maize with dried leaves of sweet potato (Hypomoea batatas) and perennial peanuts (Arachis glabratta Benth) on the growth performance of finishing broilers. Animal Feed Science and Technology 66(1-4): 283-287. {a} Dep. Anim. Sci., Fac. Agric., Univ. Dschang, P.O. Box 70, Dschang, Cameroon

Thompson, P. G., L. L. Hong, et al. (1997). Genetic linkage of randomly amplified polymorphic DNA (RAPD) markers in sweetpotato. Journal of the American Society for Horticultural Science 122(1): 79-82. {a} Dep. Plant Soil Sci., Box 9555, Mississippi State Univ., Mississippi State, MS 39762, USA

Tsubone, M., F. Kubota, et al. (1997). Effect of grafting on the activity of adenosine 5'-diphosphate glucose pyrophosphorylase and tuberous root production in sweet potato (Ipomoea batatas Lam.). Japanese Journal of Crop Science 66(3): 509-510. Fac. Agric., Kyushu Univ., Hakozaki, Higashiku, Fukuoka 812-81, Japan

Ukoskit, K., P. G. Thompson, et al. (1997). Identifying a randomly amplified polymorphic DNA (RAPD) marker linked to a gene for root-knot nematode resistance in sweetpotato. Journal of the American Society for Horticultural Science 122(6): 818-821. {a} Dep. Plant Soil Sci., Mississippi State Univ., Mississippi State, MS 39762, USA

Vieira, I. D. C. and F. O. Fatibello (1997). Amperometric biosensor for the determination of phenols using a crude extract of sweet potato (Ipomoea batatas (L.) Lam.). Analytical Letters 30(5): 895-907. Grupo de Quimica Analitica, Dep. Quimica, Universidade Federal de Sao Carlos, Caixa Postal 676, CEP 13560-970, Sao Carlos, SP, Brazil

Vieira, R. C. and M. A. Esquibel (1997). Differentiation of tracheary elements in callus of Ipomoea batatas (L.) Lam. Arquivos de Biologia e Tecnologia Curitiba 40(2): 307-319. {a} Dep. Bot., Inst. Biol., Univ. Fed. Rio de Janeiro, Cent. Cienc. Saude, Bloco A, CEP 21949-900, Rio de Janeiro, RJ, Brazil

Wang, J. S., T. Sakai, et al. (1997). Production of somatic hybrid between cultivars of sweet potato, Ipomoea batatas (L.) Lam. in the same cross-incompatible group. Breeding Science 47(2): 135-139. Fac. Agric., Kagoshima Univ., Kagoshima 890, Japan

Yano, T., K. Saitou, et al. (1997). Studies on isoforms of sucrose synthase in sweet potatoes. Science Bulletin of the Faculty of Agriculture Kyushu University 52(1-2): 105-112. Lab. Pratical Botany, Fac. Agric., Kyushu Univ., Fukuoka 812-81, Japan

Yasuda, K. (1997). Control threshold on sweet potato, Ipomoea batatas L., damaged by the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae). Japanese Journal of Applied Entomology and Zoology 41(4): 201-207. {a} Okinawa Prefectural Agricultural Experiment Station, Sakiyama-cho, Naha, Okinawa 903, Japan

Yasuda, K. (1997). Occurrence of West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae) and damage to sweet-potato (Ipomoea batatas (L.) Lam.) fields. Japanese Journal of Applied Entomology and Zoology 41(2): 83-88. Okinawa Prefectural Agric. Exp. Stn., Naha, Okinawa 903, Japan

Yeh, K. W., J. C. Chen, et al. (1997). Functional activity of sporamin from sweet potato (Ipomoea batatas Lam.): A tuber storage protein with trypsin inhibitory activity. Plant Molecular Biology 33(3): 565-570. {a} Dep. Botany, Natl. Taiwan Univ., Taipei 106, Taiwan

Yeh, K. W., M. I. Lin, et al. (1997). Sweet potato (Ipomoea batatas) trypsin inhibitors expressed in transgenic tobacco plants confer resistance against Spodoptera litura. Plant Cell Reports 16(10): 696-699. {a} Dep. Botany, Natl. Taiwan Univ., Taipei 106, Taiwan

Zehnder, G. W. (1997). Population dynamics of whitefringed beetle (Coleoptera: Curculionidae) on sweet potato in Alabama. Environmental Entomology 26(4): 727-735. Dep. Entomol., 206 Extension Hall, Auburn Univ., Auburn, AL 36849-5629, USA

Acedo, A. L., Jr., E. S. Data, et al. (1996). Genotypic variations in quality and shelf-life of fresh roots of Philippine sweet potato grown in two planting seasons. Journal of the Science of Food and Agriculture 72(2): 209-212. {a} Postharvest Technol. Lab., Dep. Horticulture, Visayas State Coll. Agric., Baybay, Leyte 6521-A, Philippines

Anioke, S. C. (1996). Effect of time of planting and harvesting of sweet potato (Ipomoea batatas (L.) Lam.) on yield and insect damage in south-eastern Nigeria. Entomon 21(2): 137-141. Natl. Root Crops Res. Inst., PMB 7006, Umudike-Umuahia Abia State, Nigeria

Belarmino, M. M., T. Abe, et al. (1996). Asymmetric protoplast fusion between sweet potato and its relatives, and plant regeneration. Plant Cell Tissue and Organ Culture 46(3): 195-202. {a} Lab. Plant Breeding, Fac. Agric., Yamagata Univ., Tsuruoka 997, Japan

Biswas, P. K., D. R. Hileman, et al. (1996). Growth and yield responses of field-grown sweetpotato to elevated carbon dioxide. Crop Science 36(5): 1234-1239. {a} Dep. Biol., Tuskegee Univ., Tuskegee, AL 36088, USA

Blakesley, D., S. A. Mazrooei, et al. (1996). Cryopreservation of non-encapsulated embryogenic tissue of sweet potato (Ipomoea batatas). Plant Cell Reports 15(11): 873-876. {a} Univ. Bath, Sch. Biology Biochemistry, Bath BA2 7AY, UK

Buffone, F. A., B. D. R. La, et al. (1996). Random amplified polymorphic DNA markers in sweetpotato infected with Fusarium lateritium. Hortscience 31(7): 1215-1216. Dep. Horticulture, Louisiana State Univ. Agric. Cent., Louisiana Agric. Experiment Station, Baton Rouge, LA 70803-2120, USA

Chang, C. T., H. Y. Liou, et al. (1996). Activation, purification and properties of beta-amylase from sweet potatoes (Ipomoea batatas). Biotechnology and Applied Biochemistry 24(1): 13-18. {a} Dep. Food Nutr., Providence Univ., Shalu 43301, Taiwan

Chao, P. Y. J. and C. M. Yang (1996). Effect of heating pattern on pigment degradation of green vegetable leaf. Taiwania 41(4): 339-345. {a} Dep. Food Nutrition, Coll. Agriculture, Chinese Culture Univ., Hwa Kang, Yang Ming Shan, Taipei, Taiwan

Data, E. S., S. F. Nottingham, et al. (1996). Effect of sweetpotato latex on sweetpotato weevil (Coleoptera: Curculionidae) feeding and oviposition. Journal of Economic Entomology 89(2): 544-549. {a} Philippine Root Crop Res. Train. Cent., ViSCA, Baybay Leyte, Philippines

Delgado, G. E., M. L. F. Salatino, et al. (1996). Enhancement of anthocyanin and anthocyanidin synthesis by light, growth regulators and sucrose in in vitro plants of sweet potato. Revista Brasileira de Fisiologia Vegetal 8(2): 111-115. {a} Plant Cell Biol. Lab., Dep. Botany, Inst. Biosci., Univ. Sao Paulo, CP 11461, Sao Paulo, SP 05421-970, Brazil

Diaz, J., P. Schmiediche, et al. (1996). Polygon of crossability between eleven species of Ipomoea: Section Batatas (Convolvulaceae). Euphytica 88(3): 189-200. {a} Int. Potato Cent., Lima, Peru

Eguchi, T., M. Kitano, et al. (1996). New system of hydroponics for growth analysis of sweet potato tuber. Biotronics 25: 85-88. Biotron Inst., Kyushu Univ. 12, Fukuoka 812-81, Japan

Gama, M. I. C. S., R. P. Leite, Jr., et al. (1996). Transgenic sweet potato plants obtained by Agrobacterium tumefaciens-mediated transformation. Plant Cell Tissue and Organ Culture 46(3): 237-244. {a} CENARGEN/EMBRAPA, C.P. 02372, 70849-970 Brasilia DF, Brazil

Harrison, H. F., Jr. and P. D. Dukes (1996). Sensitivity of four sweetpotato clones to metribuzin herbicide. Hortscience 31(5): 846-847. {a} U.S. Vegetable Lab., Agricultural Res. Service, U.S. Dep. Agriculture, 2875 Savannah Highway, Charleston, SC 29414-5334, USA

Isobe, K., H. Fujii, et al. (1996). Effect of charcoal on the yield of sweet potato. Japanese Journal of Crop Science 65(3): 453-459. Coll. Agric. Vet. Med., Nihon Univ., Fujisawa, Kanagawa 252, Japan

Jeong, B. C., J. S. Lee, et al. (1996). A new food and processing type variety "Gunmi" of sweetpotato (Ipomoea batatas (L.) Lam.). RDA Journal of Agricultural Science Upland and Industrial Crops 38(2): 182-189. {a} Mokpo Experiment Station, Natl. Honam Agric. Experiment Station, RDA, Muan 534-830, South Korea

Jorge, L. I. F., I. C. D. A. Silva, et al. (1996). Microscopic diagnosis of the multiple flour constituted of leaves of Manihot utilissima Pohl (cassava), Cucurbita pepo L. (pumpkin), Sechium edule Swartz (chayote), Ipomoea batatas Lam. (sweet potato), Vitis sp. (grape) and Hibiscus esculentus L. (okra). Revista do Instituto Adolfo Lutz 56(1): 99-104. Do Instituto Adolfo Lutz, SP, Brazil

Katayama, K., K. Komaki, et al. (1996). Prediction of starch, moisture, and sugar in sweetpotato by near infrared transmittance. Hortscience 31(6): 1003-1006. Dep. Crop Breeding, Natl. Agric. Res. Center, Kannondai, Tsukuba 305, Japan

Kim, B. K., B. D. R. La, et al. (1996). Heritability estimates for reaction resistance to sweetpotato chlorotic leaf distortion caused by Fusarium lateritium. Hortscience 31(3): 433-435. {a} Dep. Horticulture, Louisiana State University Agricultural Cent., Louisiana Agric. Exp. Stn., Baton Rouge, LA 70803, USA

Kirsch, T., G. Saalbach, et al. (1996). Interaction of a potential vacuolar targeting receptor with amino- and carboxyl-terminal targeting determinants. Plant Physiology Rockville 111(2): 469-474. {a} Dep. Botany Microbiol., Univ. Oklahoma, Norman, OK 73019, UK

Kozai, T., C. Kubota, et al. (1996). Sweetpotato technology for solving the global issues on food, energy, natural resources and environment in the 21st century. Environment Control in Biology 34(2): 105-114. {a} Fac. Hortic., Chiba Univ., Matsudo, Chiba 271, Japan

Kwak, S. S., S. K. Kim, et al. (1996). Enhancement of peroxidase activity by stress-related chemicals in sweet potato. Phytochemistry Oxford 43(3): 565-568. {a} Plant Animal Cell Technology Res. Div., Korea Res. Inst. Bioscience and Biotechnology, KIST, P.O. Box 115, Yusong, Taejon 305-600, South Korea

Lajide, L., P. Escoubas, et al. (1996). Cyclohexadienones-insect growth inhibitors from the foliar surface and tissue extracts of Senecio cannabifolius. Experientia Basel 52(3): 259-263. {a} Dep. Chem., Federal Univ. Technol. P.M.B. 704, Akure, Nigeria

Li, L., C. H. Liao, et al. (1996). The efficiency of seedlings selection in the early generations of sweet potato (Impomoea batatas L.). Journal of the Agricultural Association of China(173): 1-16. {a} Dep. Horticulture, Chinese Culture Univ., Taipei, Taiwan

Lin, M. T., Y. S. Hwangt, et al. (1996). The significance of Arg-141 to Ser in sweet potato Cu/Zn-superoxide dismutase by site-directed mutagenesis. Journal of the Chinese Agricultural Chemical Society 34(5): 509-517. {a} Inst. Biotechnol., Natl. Taiwan Ocean Univ., Keelung, Taiwan

Lopez, A., Z. Zaldua, et al. (1996). Modification of esporamin gene from sweet potato with a synthetic DNA fragment: Nucleotide sequence and expression in Escherichia coli. Biotecnologia Aplicada 13(4): 265-270. {a} Centro Ingenieria Genet. Biotecnol., Apartado postal 387, Camaguey, Cuba

Milgram, M., J. Cohen, et al. (1996). Effects of sweet potato feathery mottle virus and sweet potato sunken vein virus on sweet potato yields and rates of reinfection of virus-free planting material in Israel. Phytoparasitica 24(3): 189-193. {a} Dept. Virol., ARO, Volcani Cent., Bet Dagan 50250, Israel

Millar, A. H., M. H. N. Hoefnagel, et al. (1996). Specificity of the organic acid activation of alternative oxidase in plant mitochondria. Plant Physiology Rockville 111(2): 613-618. {a} Div. Biochemistry Molecular Biol., Cooperative Res. Centre Plant Sci., Australian Natl. Univ., Canberra 0200, Australia

Monks, D. W., J. R. Schultheis, et al. (1996). Effects of weeds and herbicides on sweetpotato (Ipomoea batatas) transplant production using polyethylene bed covers. Weed Technology 10(2): 273-277. Dep. Hortic. Sci., N.C. State Univ., Raleigh, NC 27695, USA

Mortley, D. G., P. A. Loretan, et al. (1996). Growth responses of hydroponically grown sweetpotato tolerant and intolerant of a continuous daily light period. Hortscience 31(2): 209-212. {a} George Washington Carver Agric. Experiment Station, Tuskegee Univ., Tuskegee, AL 36088, USA

Oswald, A., J. Alkaemper, et al. (1996). The response of sweet potato (Ipomoea batatas Lam.) to inter- and relay-cropping with maize (Zea mays L.). Journal of Agronomy and Crop Science 176(4): 275-287. {a} Wissenschaftliches Zentrum Tropeninst., Justis-Liebig-Univ., Giessen-Pflanzenbau Pflanzenzuechtung, Schottstr. 2, 35390 Giessen, Germany

Otani, M. and T. Shimada (1996). Efficient embryogenic callus formation in sweet potato (Ipomoea batatas (L.) Lam.). Breeding Science 46(3): 257-260. Res. Inst. Agric. Resources, Ishikawa Agric. Coll., Nonoichi-machi, Ishikawa 921, Japan

Prakash, C. S., G. He, et al. (1996). DNA marker-based study of genetic relatedness in United States sweetpotato cultivars. Journal of the American Society for Horticultural Science 121(6): 1059-1062. {a} Cent. Plant Biotechnol. Res., Tuskegee Univ., Sch. Agric. Home Economics, Tuskegee, AL 36088, USA

Pujadas, G., F. M. Ramirez, et al. (1996). Evolution of beta-amylase: Patterns of variation and conservation in subfamily sequences in relation to parsimony mechanisms. Proteins Structure Function and Genetics 25(4): 456-472. {a} Unitat Biotecnol. Computacional, Dep. Bioquimica Biotechnol., Univ Rovira Virgili, Placa de la Imperial Tarraco 1, Tarragona 43005, Catalonia, Spain

Ravindran, V. and R. Sivakanesan (1996). Replacement of maize with sweet potato (Ipomoea batatas L.) tuber meal in broiler diets. British Poultry Science 37(1): 95-103. {a} Dep. Anim. Sci., Univ. Sydney, Camden, NSW 2570, Australia

Scott, G. K. and C. W. Symes (1996). Isolation, characterisation and cell growth-regulatory properties of kumara (sweet potato) trypsin inhibitors. Biochemistry and Molecular Biology International 38(2): 333-344. {a} Sch. Biol. Sci., Univ. Auckland, Private Bag 92019, Auckland, New Zealand

Shen, S. H., H. M. Shen, et al. (1996). Role of calonyctin on free sugars in relation to starch accumulation in developing sweet potatoes. Journal of Plant Growth Regulation 15(1): 27-31. {a} Dep. Agronomy, Zhejiang Agric. Univ., Hangzhou 310029, China

Sidhu, A. S. (1996). Evaluation of sweet potato (Ipomoea batatas (L) Lam) germplasm. Crop Improvement 23(2): 287-288. Punjab Agricultural Univ., Regional Res. Station, Bathinda 151 001, India

Tang, Y. M. L. N. and D. F. Cheng (1996). Isolation, purification and some properties of invertase from sweet potato. Acta Phytophysiologica Sinica 22(1): 45-50. Dep. Life Sci., Southwest China Normal Univ., Chongqing 630715, China

Torres, A. C., D. M. C. Teixeira, et al. (1996). Recovery of virus-free plants of sweet potato through direct regeneration of shoot tip. Revista Brasileira de Fisiologia Vegetal 8(3): 209-213. {a} C P 218, Brasilia, DF 70359-970, Brasil

Tsai, J. H. and K. Wang (1996). Development and reproduction of Bemisia argentifoli (Homoptera: Aleyrodidae) on five host plants. Environmental Entomology 25(4): 810-816. Fort Lauderdale Res. and Educ. Cent., Univ. Fla., Inst. Food and Agric. Sci., Fort Lauderdale, FL 33314, USA

Villordon, A. Q. and D. R. Labonte (1996). Genetic variation among sweetpotatoes propagated through nodal and adventitious sprouts. Journal of the American Society for Horticultural Science 121(2): 170-174. Dep. Horticulture, Louisiana Agric. Exp. Stn., Louisiana State University Agric. Cent., Baton Rouge, LA 70803, USA

Wagner, A. M. and B. J. Van (1996). Inhibition of mitochondrial respiration by the flavone aglycone isovitexin causes aberrant petal and leaf morphology in Silene latifolia. Plant Cell Reports 15(9): 718-722. {a} Dep. Physiol. Biochem. Plants, Vrije Univ., De Boelelaan 1087, 1081 HV Amsterdam, Netherlands

Wang, H. Y. and K. W. Yeh (1996). Cultivar differences in trypsin inhibitory activities of sweet potato leaves and tuberous roots. Taiwania 41(1): 27-34. {a} Dep. Bot., Natl. Taiwan Univ., Taipei 106, Taiwan

Wollo, W. J. and R. Jones (1996). Demand relations of fresh sweetpotato in the St. Louis and Chicago markets. Hortscience 31(3): 465-467. Cooperative Research, Lincoln University, Jefferson City, MO 65102-0029, USA

Yasuda, K. (1996). Attractiveness of pitfall trap to West-Indian sweet potato weevil, Euscepes postfaciatus (Fairmaire) (Coleoptera: Curculionidae). Japanese Journal of Applied Entomology and Zoology 40(2): 97-102. Okinawa Prefectural Agricultural Experiment Station, Naha, Okinawa 903, Japan

Yatomi, M., F. Kubota, et al. (1996). Evaluation of root sink ability of sweet potato (Ipomoea batatas Lam.) cultivars on the basis of enzymatic activity in the starch synthesis pathway. Journal of Agronomy and Crop Science 177(1): 17-23. Lab. Practical Botany, Fac. Agric., Kyushu University, Hakozaki, Higashi-Ku, Fukuoka 812, Japan

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Anioke, S. C., T. N. C. Echendu, et al. (1995). The biology of Acraea acerata Hew and the damage on sweet potato (Ipomoea batatas (L.) Lam) in south-eastern Nigeria. Tropical Agriculture 72(4): 327-329. Natl. Root Crops Res. Inst., Umudike, Umuahia, Nigeria

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Bieniek, M. E., R. C. Harrell, et al. (1995). Enhancement of somatic embryogenesis of Ipomoea batatas in solid cultures and production of mature somatic embryos in liquid cultures for application to a bioreactor production system. Plant Cell Tissue and Organ Culture 41(1): 1-8. {a} Dep. Horticultural Sci., IFAS PO Box 110690, Univ. Florida, Inst. Food Agric. Sci., Gainesville, FL 32611, USA

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Cherubini, C. and A. O. Marianetti (1995). Sweet potato Ipomoea batatas (L.) Poir cultivars: Testing of adaptation and yield accomplished in Mendoza. Revista de la Facultad de Ciencias Agrarias Universidad Nacional de Cuyo 27(2): 27-36. Dep. Ciencias Biol., Bot. Agricola, Fac. Ciencias Agrar., Univ. Nac. Cuyo, Almirante Brown 500, Chacras de Coria, Mendoza, Argentina

Contreras, J., D. F. Austin, et al. (1995). Biodiversity of Sweetpotato (Ipomoea batatas, Convolvulaceae) in Southern Mexico. Economic Botany 49(3): 286-296. {a} Programa Hortalizas, Campo Exp. Cotaxtla, SARH, Apdo. Postal No. 429, 91700 Veracruz, Ver., Mexico

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Hsiao, L. C. and C. S. Kuoh (1995). Pollen morphology of the Ipomoea (Convolvulaceae) in Taiwan. Taiwania 40(3): 299-316. {a} Dep. Biol., Natl. Cheng-Kung Univ., Tainan 701, Taiwan

Kim, C. S. and J. Jung (1995). Inactivation of the respiratory chain in plant mitochondria by visible light: The primary target for photodamage and endogenous photosensitizing chromophores. Journal of Photochemistry and Photobiology B Biology 29(2-3): 135-139. {a} Dep. Agric. Chem., Coll. Agric. Life Sci., Seoul National Univ., Suwon 441-744, South Korea

Kwak, S. S., S. K. Kim, et al. (1995). Acidic peroxidases from suspension-cultures of sweet potato. Phytochemistry Oxford 39(5): 981-984. {a} Bioresources Research Group, Genetic Eng. Res. Inst., KIST, PO Box 115, Yusong, Taejon 305-600, South Korea

Lage, C. L. S. and M. A. Esquibel (1995). Ipomoea batatas L. Lam. (sweet potato) response to gamma radiation. Arquivos de Biologia e Tecnologia Curitiba 38(4): 1173-1180. {a} Laboratorio de Fisiologia Vegetal, Instituto de Biofisica Carlos Chagas F, UFRJ, CCS, Bl. G, Cidade Universitaria, 21949-900 Rio de Janeiro, Brazil

Lewthwaite, S. L. and C. M. Triggs (1995). Sprout suppression in sweetpotato roots following immersion in sodium hypochlorite solutions. New Zealand Journal of Crop and Horticultural Science 23(3): 283-287. {a} New Zealand Inst. Crop and Food Res. Limited, Pukekohe Res. Centre, Cronin Road, RD1, Pukekohe, New Zealand

Li, L., C. H. Liao, et al. (1995). Field performance and phenotype stability of tissue culture-propagated sweet potatoes. Journal of the Agricultural Association of China(170): 22-33. {a} Dep. Horticulture, Chinese Culture Univ., Taipei, Taiwan

Lin, C. T., M. T. Lin, et al. (1995). Subunit interaction enhances enzyme activity and stability of sweet potato cytosolic Cu/Zn-superoxide dismutase purified by a His-tagged recombinant protein method. Plant Molecular Biology 28(2): 303-311. {a} Inst. Marine Biotechnol., Natl. Taiwan Ocean Univ., Keelung, Taiwan

Lin, C. T., M. T. Lin, et al. (1995). The gene structure of Cu/Zn-superoxide dismutase from sweet potato. Plant Physiology Rockville 108(2): 827-828. {a} Inst. Botany, Academia Sinica, Nankang, Taipei, Taiwan

Lin, C. T., M. T. Lin, et al. (1995). The gene structure of starch phosphorylase from sweet potato. Plant Physiology Rockville 107(1): 277-278. {a} Dep. Bioeng., Tatung Inst. Technology, 40 Chungshan North Road, 3rd sec., Taipei, Taiwan

Liou, Y. L., Y. D. Liao, et al. (1995). Biochemical properties of sweet potato RNases. Taiwania 40(2): 183-191. {a} Dep. Bot., Natl. Taiwan Univ., Taipei, Taiwan

Liu, Z. W., R. L. Jarret, et al. (1995). Characterization and analysis of simple sequence repeat (SSR) loci in seashore paspalum (Paspalum vaginatum Swartz). Theoretical and Applied Genetics 91(1): 47-52. {a} USDA/ARS, Plant Genetics Res., 1109 Experiment St., Griffin, GA 30223, USA

Lu, C. H., P. D. Lee, et al. (1995). Preparation of amyloplasts from sweet potato callus culture. Botanical Bulletin of Academia Sinica Taipei 36(4): 223-228. {a} Dep. Agric. Chem., Natl. Taiwan Univ., Taipei, Taiwan

Marinho, V. L. D. A. and A. N. Dusi (1995). Detection of viruses in sweet-potato germplasm (Ipomoea batatas) introduced by the quarantine system at CENARGEN/EMBRAPA. Fitopatologia Brasileira 20(1): 115-117. Centro Nacional de Pesquisa de Recursos Geneticos e Biotecnologia, C. Postal 02372, CEP 70849-970, Brasilia-DF, Brazil

Matsuo, K. and T. Arase (1995). Synthesis of (+)-ipomeamarone. Chemical and Pharmaceutical Bulletin Tokyo 43(5): 890-892. {a} Fac. Pharmaceutical Sci., Kinki Univ., 3-4-1 Kowakae, Higashiosaka, Osaka 577, Japan

McGuire, R. G. and J. L. Sharp (1995). Market quality of sweet potatoes after gamma-irradiation for weevil control. Hortscience 30(5): 1049-1051. U.S. Dep. Agric. Agric. Res. Serv., Subtropical Horticulture Res. Station, 13601 Old Cutler Road, Miami, FL 33158, USA

Motsenbocker, C. E. and T. J. Monaco (1995). Sweet potato (Ipomoea batatas) clones differ in response to ethyl-metribuzin. Weed Technology 9(3): 546-552. {a} Dep. Hortic. Sci., N.C. State Univ., Raleigh, NC 27695-7609, USA

Nelson, P. E., J. H. Juba, et al. (1995). An unusual strain of Fusarium lateritium affecting sweetpotato. Mycologia 87(4): 507-509. {a} Fusarium Research Center, Dep. Plant Pathol., Pennsylvania State Univ., University Park, PA 16802, USA

Newell, C. A., J. M. Lowe, et al. (1995). Transformation of sweet potato (Ipomoea batatas (L.) Lam.) with Agrobacterium tumefaciens and regeneration of plants expressing cowpea trypsin inhibitor and snowdrop lectin. Plant Science Limerick 107(2): 215-227. {a} Axis Genet. Ltd., Babraham, Cambridge CB2 4AZ, UK

Nishiguchi, M., M. Mori, et al. (1995). Specific Detection of a Severe Strain of Sweet Potato Feathery Mottle Virus (SPFMV-S) by Reverse Transcription and Polymerase Chain Reaction (RT-PCR). Annals of the Phytopathological Society of Japan 61(2): 119-122. {a} Natl. Inst. Agrobiol. Resour., 2-1-2 Kan-nondai, Tsukuba, Ibaraki 305, Japan

Nozue, M., H. Kubo, et al. (1995). Detection and characterization of a vacuolar protein (VP24) in anthocyanin-producing cells of sweet potato in suspension culture. Plant and Cell Physiology 36(5): 883-889. {a} Dep. Appl. Biol., Fac. Textile Sci. Technol., Shinshu Univ., Tokida 3-15-1, Veda 386, Japan

Oba, K., S. Ishikawa, et al. (1995). Purification and Properties of L-Galactono-gamma-Lactone Dehydrogenase, a Key Enzyme for Ascorbic Acid Biosynthesis, from Sweet Potato Roots. Journal of Biochemistry Tokyo 117(1): 120-124. {a} Dep. Food Biochem., Nagoya Women's Univ., 3-40 Shioji-cho, Mizuho-ku, Nagoya 467, Japan

Ohto, M. A. and K. Nakamura (1995). Sugar-induced increase of calcium-dependent protein kinases associated with the plasma membrane in leaf tissues of tobacco. Plant Physiology Rockville 109(3): 973-981. {a} Lab. Biochem., Sch. Agric. Sci., Nagoya Univ., Chikusa-ku, Nagoya 464-01, Japan

Osaki, M., H. Ueda, et al. (1995). Accumulation of carbon and nitrogen compounds in sweet potato plants grown under deficiency of N, P, or K nutrients. Soil Science and Plant Nutrition 41(3): 557-566. Lab. Plant Nutr., Fac. Agric., Hokkaido Univ., Sapporo 660, Japan

Osaki, M., H. Ueda, et al. (1995). Accumulation of carbon and nitrogen compounds in sweet potato plants grown under different nitrogen application rates. Soil Science and Plant Nutrition 41(3): 547-555. Lab. Plant Nutr., Fac. Agric., Hokkaido Univ., Sapporo 660, Japan

Oswald, A., J. Alkaemper, et al. (1995). Response of sweet potato (Ipomoea batatas Lam.) to shading at different growth stages. Journal of Agronomy and Crop Science 175(2): 99-107. {a} Wissenschaftliches Zentrum Tropeninstitut, Justus-Liebig-Univ. Giessen, Pflanzenbau Pflanzenzuechtung, Schottstrasse 2, 35390 Giessen, Germany

Oswald, A., J. Alkamper, et al. (1995). The effect of different shade levels on growth and tuber yield of sweet potato: II. Tuber yield. Journal of Agronomy and Crop Science 175(1): 29-40. {a} Wissenschaftliches Zentrum Tropeninstitut der Justus-Liebig-Univ. Giessen-Pflanzenbau und Pflanzenzuechtung, Schottstrasse 2, 35390 Giessen, Germany

Padiglia, A., R. Medda, et al. (1995). Fractionation and characterization of two forms of peroxidase from Oryza sativa. Preparative Biochemistry 25(1-2): 11-19. Ist. Chim. Biol., Univ. di Cagliari, via della Pineta 77, 09125 Cagliari, Italy

Penaflorida, V. D. (1995). Growth and survival of juvenile tiger shrimp fed diets where fish meal is partially replaced with papaya (Carica papaya L.) or camote (Ipomea batatas Lam.) leaf meal. Israeli Journal of Aquaculture Bamidgeh 47(1): 25-33. Aquaculture Dep., Southeast Asian Fisheries Dev. Cent., PO Box 256, Iloilo, Philippines

Peterson, J. K. and H. F. Harrison, Jr. (1995). Sweet potato allelopathic substance inhibits growth of purple nutsedge (Cyperus rotundus). Weed Technology 9(2): 277-280. {a} Res. Plant Physiol., USDA-ARS, U.S. Vegetable Lab., 2875 Savannah Hwy., Charleston, SC 29414, USA

Pozzer, L., A. N. Dusi, et al. (1995). Characterization of a Brazilian isolate of sweet potato feathery mottle virus infecting sweet potato. Fitopatologia Brasileira 20(1): 65-71. {a} Dep. Fitopatologia, Univ. Brasilia-70919-970, Brasilia-DF, Brazil

Pozzer, L., J. B. C. Silva, et al. (1995). Performance of micropropagated sweet potato plants after two field propagations and rate of reinfection by sweet potato feathery mottle virus. Fitopatologia Brasileira 20(3): 464-468. {a} Dep. Biol. Cel., Univ. Brasilia, 70919-970 Brasilia, DF, Brazil

Ravindran, V., G. Ravindran, et al. (1995). Biochemical and nutritional assessment of tubers from 16 cultivars of sweetpotato (Ipomoea batatas L.). Journal of Agricultural and Food Chemistry 43(10): 2646-2651. {a} Dep. Animal Sci., Univ. Sydney, Camden, NSW 2570, Australia

Roberts, N. L. B., T. U. Ferguson, et al. (1995). Performance of sweet potato cultivars intercropped with maize. 2. Total dry matter production and tuber yield responses to staggered maize planting dates. Tropical Agriculture 72(3): 210-215. Dep. Crop Sci., Univ. West Indies, St. Augustine, Trinidad and, Trinidad and Tobago

Roberts, N. L. B., T. U. Ferguson, et al. (1995). Performance of sweet potato cultivars intercropped with maize 1. Total dry matter production and tuber yield responses to two maize populations. Tropical Agriculture 72(3): 202-209. Dep. Crop Sci., Univ. West Indies, St. Augustine, Trinidad and, Trinidad and Tobago

Rolston, L. H., B. D. R. La, et al. (1995). 'Darby' Sweetpotato. Hortscience 30(2): 398-399. {a} Dep. Entomol., Louisiana Agric. Exp. Stn., Louisiana State Univ., Agric. Cent., Baton Rouge, LA 70803, USA

Rushton, P. J., H. MacDonald, et al. (1995). Members of a new family of DNA-binding proteins bind to a conserved cis-element in the promoters of alpha-Amy2 genes. Plant Molecular Biology 29(4): 691-702. {a} IACR-Long Ashton Res. Station, Dep. Agric. Sci., Univ. Bristol, Long Ashton, Bristol BS18 9AF, UK

Sharp, J. L. (1995). Mortality of sweetpotato weevil (Coleoptera: Apionidae) stages exposed to gamma irradiation. Journal of Economic Entomology 88(3): 688-692. Subtorpical Hortic. Res. Stn., USDA-ARS, 13601 Old Cutler Road, Miami, FL 33158, USA

Shibata, W., H. Banno, et al. (1995). A tobacco protein kinase, NPK2, has a domain homologous to a domain found in activators of mitogen-activated protein kinases (MAPKKs). Molecular and General Genetics 246(4): 401-410. {a} Dep. Biol., Fac. Sci., Nagoya Univ., Chikusa-ku, Nagoya 464-01, Japan

Sun, J. B., R. F. Severson, et al. (1995). Identifying critical volatiles in the flavor and baked 'Jewel' sweetpotatoes (Ipomoea batatas (L.) Lam.). Journal of the American Society for Horticultural Science 120(3): 468-474. {a} Dep. Hortic., Univ. Ga., Athens, GA 30602-7273, USA

Takahata, Y. (1995). Varietal differences in storage root quality and physiological factors in sweetpotato. JARQ 29(4): 215-221. Dep. Crop Breeding, Kyushu Natl. Agric. Exp. Stn., Nishigoshi, Kumamoto 861-11, Japan

Takahata, Y., T. Noda, et al. (1995). Changes in carbohydrates and enzyme activities of sweetpotato lines during storage. Journal of Agricultural and Food Chemistry 43(7): 1923-1928. {a} Crop Qual. Lab., Dep. Crop Breed., Kyushu Natl. Agric. Exp. Stn., Nishigoshi, Kumamoto 861-11, Japan

Villordon, A. Q. and D. R. Labonte (1995). Variation in randomly amplified DNA markers and storage root yield in 'jewel' sweetpotato clones. Journal of the American Society for Horticultural Science 120(5): 734-740. Dep. Hortic., La. Agric. Experiment Station, La. State Univ. Agric. center, Baton Rouge, LA 70803, USA

Wang, S. J., C. T. Lin, et al. (1995). Nucleotide sequence of a sporamin gene in sweet potato. Plant Physiology Rockville 108(2): 829-830. {a} Dep. Botany, National Taiwan Univ., Taipei, Taiwan

Wollo, W. J. (1995). Evaluating the market potential for sweetpotato production in southeastern Missouri. Hortscience 30(1): 135-136. Cooperative Res., Lincoln Univ., Jefferson City, MO 65102-0029, USA

Yadav, B. P. S., H. K. Gupta, et al. (1995). Sweet potato (Ipomoea botatus L.) as a component of swine ration. Indian Journal of Animal Sciences 65(4): 455-459. {a} Div. Anim. Nutr., ICAR Res. Complex N. Eastern Hill Region, Barapani, Meghalaya 793 103, India

Zhang, D., W. W. Collins, et al. (1995). Estimation of Genetic Variance of Starch Digestibility in Sweetpotato. Hortscience 30(2): 348-349. Dep. Horticultural Sci., Box 7609, N.C. State Univ., Raleigh, NC 27695, USA

Agarie, S., M. Morokuma, et al. (1994). Application of gas-phase oxygen electrode to the measurement of photosynthetic potential in Ipomoea batatas leaves. Journal of the Faculty of Agriculture Kyushu University 38(3-4): 225-230. Lab. Practical Bot., Fac. Agric., Kyushu Univ., 46-01 Fukuoka 812, Japan

Alves, J. M. C., D. Sihachakr, et al. (1994). Isozyme modifications and plant regeneration through somatic embryogenesis in sweet potato (Ipomoea batatas (L.) Lam.). Plant Cell Reports 13(8): 437-441. {a} Morphogenese Vegetale Experimentale, Bat. 360, Univ. Paris Sud, F-91405 Orsay Cedex, France

Ameny, M. A., P. W. Wilson, et al. (1994). Protein quality of weaning baby food from African white fleshed sweetpotato varieties and Apios americana with pigeon peas added as a complementary protein. Nutrition Research 14(9): 1397-1406. {a} Dep. Food Sci., Sch. Human Ecol., La. State Univ., Agric. Cent., Baton Rouge, LA 70803, USA

Apte, U. B., A. R. Karnik, et al. (1994). Stability analysis in short duration cultivars of sweet potato (Ipomoea batatas L.). Indian Journal of Genetics and Plant Breeding 54(2): 133-136. Tuber Crops Scheme, Central Experimental Station, Konkan Krishi Vidyapeeth, Dapoli, Ratnagiri 415712, India

Babu, L. (1994). Changes in carbohydrate fractions of sweet potato tubers on processing. Tropical Agriculture 71(1): 71-73. Central Tuber Crops Res. Inst., Sreekariyam, Trivandrum-695 017, Kerala, India

Belarmino, M. M., T. Abe, et al. (1994). Plant regeneration from stem and petiole protoplasts of sweet potato (Ipomoea batatas) and its wild relative, I. lacunosa. Plant Cell Tissue and Organ Culture 37(2): 145-150. {a} Lab. Plant Breeding, Fac. Agric., Yamagata Univ., Tsuruoka 997, Japan

Bohac, J. R. and A. Jones (1994). Unreduced pollen in hexaploid sweetpotato (Ipomoea batatas). Journal of Heredity 85(2): 162-166. U.S. Vegetable Lab., Agric. Research Serv., U.S. Dep. Agric., Charleston, SC 29414, USA

Campbell, C. A. (1994). Handling of Florida-grown and imported tropical fruits and vegetables. Hortscience 29(9): 975-978. EcoSci. Prod. Systems Corp., P.O. Box 3228, 4300 LB McLeod Road, Orlando, FL 32802, USA

Clark, C. A. (1994). The chlorotic leaf distortion pathogen, Fusarium lateritium, cross protects sweetpotato against Fusarium wilt caused by Fusarium oxysporum f. sp. batatas. Biological Control 4(1): 59-66. Dep. Plant Pathol. Crop Physiology, La. Agric. Experiment Station, La. State Univ. Agric. Center, Baton Rouge, LA 70803-1720, USA

Clark, C. A. and M. W. Hoy (1994). Identification of resistance in sweetpotato to rhizopus soft rot using two inoculation methods. Plant Disease 78(11): 1078-1082. Dep. Plant Pathol. Crop Physiol., Louisisana Agric. Experiment Station, Louisiana State Univ. Agric. Center, Baton, Rouge, LA 70803-1720, USA

Clark, C. A. and M. W. Hoy (1994). Isolation of Fusarium lateritium from sweetpotato seed. Plant Disease 78(6): 585-587. Dep. Plant Pathol. Crop Physiol., La. Agric. Exp. Stn., Louisiana State Univ. Agric. Cent., Baton Rouge, LA 70803-1720, USA

Connolly, A. G., I. D. Godwin, et al. (1994). Interpretation of randomly amplified polymorphic DNA marker data for fingerprinting sweet potato (Ipomoea batatas L.) genotypes. Theoretical and Applied Genetics 88(3-4): 332-336. {a} Dep. Agric., Univ. Queensland, QLD 4072, Australia

Cox, M. L. (1994). Euscepes postfasciatus Fairmaire in Paraguay. FAO Food and Agriculture Organization of the United Nations Plant Protection Bulletin 42(1-2): 72-73. CABI International Inst. of Entomology, 56 Queen's Gate, London SW7 5JR, UK

Crozzoli, R., F. Cati, et al. (1994). Response of ten sweet potato selections to the root-knot nematode Meloidogyne incognita. Fitopatologia Venezolana 7(2): 50-54. {a} Univ. Cent. Venezuela, Fac. Agronomia, Dep. Zool. Agricola, Apdo. 4579, Maracay, Venezuela

Desamero, N. V., B. B. Rhodes, et al. (1994). Picolinic acid-induced direct somatic embryogenesis in sweet potato. Plant Cell Tissue and Organ Culture 37(2): 103-111. {a} Dep. Horticulture, Clemson Univ., Clemson, SC 29634, USA

Eguchi, T., M. Kitano, et al. (1994). Effect of root temperature on sink strength of tuberous root in sweet potato plants (Ipomoea batatas Lam.). Biotronics 23: 75-80. Biotron Inst., Kyushu Univ. 12, Fukuoka 812, Japan

Hagenimana, V., R. E. Simard, et al. (1994). Amylolytic activity in germinating sweetpotato (Ipomoea batatas L.) roots. Journal of the American Society for Horticultural Science 119(2): 313-320. {a} Station de Recherche, Agriculture Can., 2560 Boulevard Hochelaga, Sainte-Foy, PQ G1V 2J3, Canada

Hall, M. R. (1994). Combined heating applications increased plant production from bedded sweetpotato roots. Hortscience 29(9): 1022-1024. Dep. Horticulture, Univ. Ga. Coastal Plain Exp. Stn., Tifton, GA 31793, USA

Hall, M. R. (1994). Yield of sweetpotato cuttings is not influenced by shoot apex or polarity. Hortscience 29(1): 41. Dep. Hortic., Univ. Georgia Coastal Plain Exp. Stn., Tifton, GA 31793, USA

Harrison, H. F., Jr. and J. K. Peterson (1994). Sweet potato periderm components inhibit yellow nutsedge (Cyperus esculentus) growth. Weed Technology 8(1): 168-171. U.S. Dep. Agric., Agric. Res. Service, US Vegetable Lab., Charleston, SC 29414, USA

Hather, J. G. (1994). A morphological classification of roots and tubers and its bearing on the origins of agriculture in southwest Asia and Europe. Journal of Archaeological Science 21(6): 719-724. Inst. Archaeol., Univ. Coll. London, 31-34 Gordon Square, London WC14 0PY, UK

Heisswolf, S., V. J. Galea, et al. (1994). A preliminary assessment of sweet potato cultivars for sweet potato feathery mottle virus (SPFMV). Australasian Plant Pathology 23(3): 77-80. {a} Queensl. Dep. Prim. Ind., Gatton, QLD 4343, Australia

Icochea, T., V. Durate, et al. (1994). Occurrence of sweetpotato chlorotic leaf distortion in Brazil and Peru caused by Fusarium lateritium. Plant Disease 78(7): 754. {a} Centro Internacional Papa, Apartado 5969, Lima, Peru

Islam, T., I. Hasegawa, et al. (1994). Vinyl-film mulch: A practice for sweet potato (Ipomoea batatas Lam. var. edulis Makino) cultivation to reduce nitrate leaching. Agricultural Water Management 26(1-2): 1-11. {a} Dep. Res. Planning Coordination, Kyushu Natl. Agric. Exp. Stn. 6644, Yokoichi, Miyakonojo, Miyazaki 885, Japan

Jansson, R. K. and S. H. Lecrone (1994). Application methods for entomopathogenic nematodes (Rhabditida: Heterorhabditidae): Aqueous suspensions versus infected cadavers. Florida Entomologist 77(2): 281-284. Tropical Res. Educ. Cent., Inst. Food Agric. Sci., Univ. Fla., Homestead, FL 33031, USA

Jarret, R. L. and D. F. Austin (1994). Genetic diversity and systematic relationships in sweetpotato (Ipomoea batatas (L.) Lam.) and related species as revealed by RAPD analysis. Genetic Resources and Crop Evolution 41(3): 165-173. {a} USDA/ARS, Southern Regional Plant Introduction Stn., 1109 Experiment St., Griffin, GA 30223, USA

Ju, J. I., C. H. Kim, et al. (1994). Effects of cultivation patterns and harvest dates on sweet potato (Ipomoea batatas L.) growth and yield. RDA Journal of Agricultural Science Upland and Industrial Crops 36(2): 131-137. {a} Chungnam Provincial RDA, Taejon, South Korea

Kadiebwe, N. N. (1994). Identification of some constraints to the production of tubers: Manihot utilissima, Ipomoea batatas and Solanum tuberosum in Easter Zaire. Tropicultura 12(2): 61-62. Cent. Recherches INERA-NIOKA, Antenne Recherches Les Plantes Tubercules, B.P. 111, via Bunia, Haut-Zaire, Zaire

Kim, S. K., S. S. Kwak, et al. (1994). Selection of plant cell lines for high yields of peroxidase. Korean Biochemical Journal 27(2): 132-137. {a} Bioresources Res. Group, Genetic Eng. Res. Inst., KIST, Taejon 305-606, South Korea

Ko, H. C. and C. P. Lin (1994). Development and application of cloned DNA probes for a mycoplasmalike organism associated with sweetpotato witches'-broom. Phytopathology 84(5): 468-473. Dep. Plant Pathol. and Entomol., Natl. Taiwan Univ., Taipei 107, Taiwan

Kobayashi, R. S., J. C. Bouwkamp, et al. (1994). Interspecific hybrids from cross incompatible relatives of sweetpotato. Euphytica 80(3): 159-164. {a} Dep. Agric., Agric. Res. Serv., Vegetable Lab., BARC-West, Beltsville, MD 20705, USA

Kobayashi, R. S., J. C. Bouwkamp, et al. (1994). PCIB enhances regeneration of Ipomoea cordatotriloba Dennstedt leaf explants and protoplasts. Hortscience 29(4): 327-328. {a} U.S. Dep. Agric., Agric. Res. Serv., Veg. Lab., Beltsville, MD 20705, USA

Kolo, M. G. M. and U. B. Abdullahi (1994). Low-growing crops as weed-suppressant in intercropping systems. Indian Journal of Agricultural Sciences 64(9): 642-643. {a} Dep. Agric. Botany, Univ. Reading, Reading RG6 2AU, UK

Kubota, F., K. Nada, et al. (1994). Photosynthetic control factors in a single leaf of sweet potato, Ipomoea batatas Lam. Japanese Journal of Crop Science 63(1): 89-95. Fac. Agric., Kyushu Univ., Hakozaki, Higashiku, Fukuoka 812, Japan

Lee, P. D., Y. L. Lin, et al. (1994). Studies on starch phosphorylase isozymes from sweet potato callus. Journal of the Chinese Agricultural Chemical Society 32(2): 177-189. {a} Graduate Inst., Agricultural Chemistry, National Taiwan Univ., Taipei, Taiwan

Leela, M. and R. S. Shanmukha (1994). Phenolic compounds in the taxonomy of Ipomoea L. (Convolvulaceae). Feddes Repertorium 105(7-8): 445-448. {a} Kasturba Gandhi Coll. Women, Dep. Bot., West Marredpally, Secunderabad-500025, India

Li, L., C. H. Liao, et al. (1994). Variability in taste and physico-chemical properties and its breeding implications in sweet potatoes (Ipomoea batatas). Journal of the Agricultural Association of China(165): 19-31. {a} Dep. Hortic., Chinese Culture Univ., Taipei, Taiwan

Lin, Y. H. and S. J. Huang (1994). Activators of a trypsin-casein system isolated from old leaves of Ipomoea batatas. Botanical Bulletin of Academia Sinica Taipei 35(2): 73-80. {a} Inst. Bot., Acad. Sinica, Taipei 115, Taiwan

Lin, Y. H. and C. L. Lu (1994). Latex trypsin inhibitors of sweet potato (Ipomoea batatas Lam.). Botanical Bulletin of Academia Sinica Taipei 35(3): 153-159. Inst. Botany, Academia Sinica, Taiwan 115, Taiwan

Lin, Y. H. and M. Tsai (1994). Purification and characterization of an enzyme hydrolyzing L-methionine-4-nitroanilide from germinated sweet potato (Ipomoea batatas (L.) Lam. cv. Tainong 57) roots. Botanical Bulletin of Academia Sinica Taipei 35(1): 25-32. Institute Botany, Academia Sinica, Taipei, TAI 115

Liu, Q. C., T. Kokubu, et al. (1994). Studies of basic conditions of protoplast electrofusion in sweet potato (Ipomoea batatas (L.) Lam.) and its related species. Memoirs of the Faculty of Agriculture Kagoshima University 30: 31-34. Lab. Crop Sci., Fac. Agric., Kagoshima Univ., Kagoshima, Japan

Lopes, C. A. and L. S. Boiteux (1994). Leaf spot and stem blight of sweetpotato caused by Alternaria bataticola: A new record to South America. Plant Disease 78(11): 1107-1109. {a} Research Plant Pathol., CNPH/EMBRAPA, C.P. 0218, 70359-970 Brasilia-DF, Brazil

Miyazaki, T., M. Furukawa, et al. (1994). Storability of sweet potato roots as related to root protein content and top/root ratio of plants at harvest. Journal of the Japanese Society for Horticultural Science 63(2): 461-467. Chiba Agricultural Experiment Station, Daizenno, Chiba 266, Japan

Mortley, D. G., C. K. Bonsi, et al. (1994). Relative humidity influences yield, edible biomass, and linear growth rate of sweetpotato. Hortscience 29(6): 609-610. George Washington Carver Agric. Exp. Stn., Tuskegee Univ., Tuskegee, AL 36088, USA

Murata, T. and H. Fukuoka (1994). Ovule culture of sweet potato, Ipomoea batatas (L.) Lam.: I. Pretreatment and culture condition. Proceedings of School of Agriculture Kyushu Tokai University 13: 15-20. Sch. Agric., Kyushu Tokai Univ., Japan

Murata, T., H. Fukuoka, et al. (1994). Plant regeneration from mesophyll and cell suspension protoplasts of sweet potato, Ipomoea batatas (L.) Lam. Breeding Science 44(1): 35-40. {a} Sch. Agric., Kyushu Tokai Univ., Choyo, Asao, Kumamoto 869-14, Japan

Nakayama, S. and Y. Nakamura (1994). Purification and some properties of starch branching enzyme (Q-enzyme) from tuberous root of sweet potato. Physiologia Plantarum 91(4): 763-769. {a} Natl. Inst. Agrobiol. Resour., Tsukuba, Ibaraki 305, Japan

Nery, A. A. and A. G. Calbo (1994). Adapting constant-volume manometry for studying gas exchange by bulky plant organs. Journal of the American Society for Horticultural Science 119(6): 1222-1229. Cent. Nac. Pesquisa Hortalicas, CP 0218, Brasilia, DF 70359-970, Brazil

Newell, L. L., J. O. Garner, et al. (1994). Estimation of drought tolerance in sweetpotatoes. Phyton Buenos Aires 56: 119-125. {a} Dep. Horticulture, Box 9645, Mississippi State, MS 39762, USA

Ngeve, J. M. (1994). Response of sweet potato clones to weevils and environments in Cameroon. Journal of Horticultural Science 69(6): 963-968. Inst. Agronomic Res., Nkolbisson B.P. 2123 Messa, Yaounde, Cameroon

Odake, K., A. Hatanaka, et al. (1994). Evaluation method and breeding of purple sweet potato "YAMAGAWA MURASAKI (Ipomoea batatas Poir.) for raw material of food colorants. Journal of the Japanese Society for Food Science and Technology 41(4): 287-293. {a} Dep. Biol. Chem. Agric., Yamaguchi Univ., 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753, Japan

Ozias, A. P. and R. J. Jarret (1994). Nuclear DNA content and ploidy levels in the genus Ipomoea. Journal of the American Society for Horticultural Science 119(1): 110-115. {a} Dep. Hortic., Univ. Georgia Coastal Plain Exp. Stn., Tifton, GA 31793, USA

Paula, M. A., J. O. Siqueira, et al. (1994). Mycelial growth of the VA mycorrhizal fungi in presence of suspension cultured plant cells and diazotrophic bacteria in vitro. Revista Brasileira de Biologia 54(4): 631-639. {a} Centro Nac. Pesquisa Agrobiologia, C.P. 74505, 23851-970 Seropedica, RJ, Brazil

Pio, R. G., S. Winter, et al. (1994). First report of sweetpotato virus disease-associated closterovirus in Brazil. Plant Disease 78(11): 1122. {a} IPA, Bongi, 50761-000, Recife, PE, Brazil

Platel, K. and K. S. Shurpalekar (1994). Resistant starch content of Indian foods. Plant Foods for Human Nutrition Dordrecht 45(1): 91-95. {a} Dep. Nutrition and Food Safety, Central Food Technol. Res. Inst., Myosre 570-013, India

Pozzer, L., A. N. Dusi, et al. (1994). The rate of reinfection of virus-free sweet potato plants by sweet potato feathery mottle virus, under field conditions. Fitopatologia Brasileira 19(2): 231-234. {a} Departamento de Biologia Celular, Universidade de Brasilia, 70919-970, DF, Brazil

Reynolds, L. B., N. Rosa, et al. (1994). Effects of harvest date on certain chemical and physical characteristics of sweet potato grown in southwestern Ontario. Canadian Journal of Plant Science 74(3): 603-606. {a} Agric. Canada, Res. Sttion, P.O. Box 186, Delhi, ON N4B 2W9, Canada

Rolston, L. H., B. D. R. La, et al. (1994). L 86-33 sweetpotato germplasm. Hortscience 29(6): 712. {a} Dep. Horticulture, La. Agric. Exp. Stn., La. State Univ. Agric. Cent., Baton Rouge, LA 70803, USA

Rubin, R. D. S., A. A. R. Ioris, et al. (1994). Control, severity under field conditions, and reaction of sweet potato (Ipomoea batatas) to foot rot (Plenodomus destruens). Fitopatologia Brasileira 19(1): 39-43. Dep. Fitossanidade, Fac. Agron., UFRGS, Caixa Postal 776, 90012-970 Porto Alegre, RS, Brazil

Sangakkara, U. R. (1994). Response of sweet potato (Ipomoea batatas L.) to different planting times. Journal of Agronomy and Crop Science 172(2): 113-118. Fac. Agric., Univ. Peradeniya, Peradeniya, Sri Lanka

Schultheis, J. R., D. J. Cantliffe, et al. (1994). Early plant growth and yield of sweetpotato grown from seed, vegetative cuttings, and somatic embryos. Journal of the American Society for Horticultural Science 119(5): 1104-1111. {a} North Carolina State Univ., Dep. Horticultural Sci., Box 7609, Raleigh, NC 27695, USA

Seal, D. R. and R. B. Chalfant (1994). Bionomics of Conoderus rudis (Coleoptera: Elateridae): Newly reported pest of sweet potato. Journal of Economic Entomology 87(3): 802-809. {a} Univ. Florida, Inst. Food and Agric. Sci., Tropical Res. and Education Cent., Homestead, FL 330331, USA

Silva, A. T. D., M. Pasqual, et al. (1994). Effects of species, defoliation and environment on acclimatization of plantlets from tissues culture. Ciencia e Pratica 18(3): 280-285. {a} Bolsista CNPq/RHAE/EMBRAPA-CNPAF, Goiania, GO, Brazil

Snook, M. E., E. S. Data, et al. (1994). Characterization and quantitation of hexadecyl, octadecyl and eicosyl esters of p-coumaric acid in the vine and root latex of sweetpotato (Ipomoea batatas (L.) Lam.). Journal of Agricultural and Food Chemistry 42(11): 2589-2595. {a} U.S. Dep. Agric., P.O. Box 5677, Athens, GA 30613, USA

Sun, E. J. (1994). Ozone injury to leafy sweet potato and spinach in northern Taiwan. Botanical Bulletin of Academia Sinica Taipei 35(3): 165-170. Dep. Plant Pathol. and Entomol., National Taiwan Univ., Taipei, Taiwan

Takeda, S., S. Mano, et al. (1994). Inhibitors of protein phosphatases 1 and 2A block the sugar-inducible gene expression in plants. Plant Physiology Rockville 106(2): 567-574. {a} Lab. Biochem., Sch. Agric., Nagoya Univ., Chikusa, Nagoya 464-01, Japan

Taylor, R. G. and R. R. McInnes (1994). Site-directed mutagenesis of conserved serines in rat histidase: Identification of serine 254 as an essential active site residue. Journal of Biological Chemistry 269(44): 27473-27477. {a} Dep. Genetics, Hosp. Sick Children, 555 University Ave., Toronto, ON M5G 1X8, Canada

Thompson, P. G., J. C. Schneider, et al. (1994). Genetic variance component and heritability estimates of freedom from weevil injury to sweetpotato. Journal of the American Society for Horticultural Science 119(3): 620-623. {a} Dep. Horticulture and Entomol., Miss. State Univ., Mississippi State, MS 39762, USA

Usugi, T., M. Nakano, et al. (1994). A new strain of sweet potato feathery mottle virus that causes russet crack on fleshy roots of some Japanese cultivars of sweet potato. Annals of the Phytopathological Society of Japan 60(5): 545-554. {a} Japan International Res. Center Agric. Sci., Okinawa Sub-Tropical Station, Ishigaki, Okinawa 907, Japan

Van, D. B. C. W. M., A. M. Wagner, et al. (1994). The relationship between electron flux and the redox poise of the quinone pool in plant mitochondria: Interplay between quinol-oxidizing and quinone-reducing pathways. European Journal of Biochemistry 226(3): 1071-1078. {a} Dep. Mol. Cell. Biol., Vrije Univ., De Boelelaan 1087, NL-1081 HV Amsterdam, Netherlands

Weerakoon, L. K., A. V. Babwah, et al. (1994). Plant regeneration of sweet potato in vitro. Cytobios 80(323): 205-209. {a} Dep. Biol. Sci., Illinois State Univ., Normal, IL 61790-4120

Agwunobi, L. N. (1993). Sweet potato (Ipomoea batatas (L.) Lam.) meal as a partial substitute for maize in layers ration. Tropical Agriculture 70(3): 291-293. Federal Coll. Agric., Natl. Root Crops Res. Inst., Umudike, PMB 7008, Umuahia, Nigeria

Ahmed, F. E. and A. E. Hall (1993). Heat injury during early floral bud development in cowpea. Crop Science 33(4): 764-767. {a} Dep. Botany and Plant Sci., Univ. Calif., Riverside, CA 92521-0124, USA

Almeida, M. L. B. D. and M. D. V. C. Penteado (1993). Carotenoids and provitamin A value of some Brazilian sweet potato cultivars (Ipomoea batatas Lam.). Revista de Farmacia e Bioquimica da Universidade de Sao Paulo 28(2): 145-154. Fac. Ciencias Farmaceuticas, Universidade de Sao Paulo, Caixa Postal 66083, 05389-970 Sao Paulo, SP, Brasil

Arima, S., J. Harada, et al. (1993). Growth and yield performance of the water chestnut (Trapa bispinosa Roxb): V. Effects of photoperiodic treatment on the distributing pattern of flower buds and the growth of leaves. Japanese Journal of Crop Science 62(2): 222-227. Fac. Agric., Sage Univ., Honjou, Honjou, Sage 840, Japan

Atteh, J. O., O. O. Balogun, et al. (1993). Replacement value of maize-milling waste for maize in the diet of growing pullets. Tropical Agriculture 70(3): 267-270. Dep. Anim. Prod., Univ. Ilorin, Ilorin, Kwara State, Nigeria

Bernatzky, R. (1993). Genetic mapping and protein product diversity of the self-incompatability locus in wild tomato (Lycopersicon peruvianum). Biochemical Genetics 31(3-4): 173-184. Dep. Plant and Soil Sci., French Hall, Univ. Mass., Amherst, MA 01003, USA

Carsky, R. J., P. Walker, et al. (1993). Response of selected crop associations to groundwater table depth in an inland valley. Field Crops Research 34(1): 1-13. {a} IITA, C/o Lambourn Co., Carolyn House, 26 Dingwall Road, Croydon CR9 3EE, UK

Dangler, J. M. (1993). Lime applications increase extended sweetpotato transplant production in heated beds. Journal of Plant Nutrition 16(11): 2281-2288. Dep. Horticulture, 101 Funchess Hall, Auburn Univ., AL 36849-5408, USA

Dangler, J. M. (1993). Media evaluated for extended sweetpotato transplant production in heated beds. Journal of Plant Nutrition 16(10): 1931-1941. Dep. Hortic., 101 Funchess Hall, Auburn Univ., Auburn University, AL 36849-5408, USA

Dayal, T. R. and R. P. Sharma (1993). Response of sweetpotato (Ipomoea batatas) to fertilizer, method and time of planting and spacing. Indian Journal of Agronomy 38(3): 431-435. {a} Int. Potato Cent., South-West Asia Region. Indian Agric. Res. Inst. Campus, New Delhi 110 012, India

Durai, P. S. S. (1993). The life history of Eumenotes obscura Westwood (Pentatomoidea: Dinidoridae). Malaysian Agricultural Journal 55(1): 41-51.

Ekanayake, I. J. and J. H. Dodds (1993). In vitro testing for the effects of salt stress on growth and survival of sweet potato. Scientia Horticulturae Amsterdam 55(3-4): 239-248. {a} International Inst. Tropical Agriculture, c/o L.W. Lambourne and Co., Carolyn House, 26 Dingwall Rd., Croydon CR9 3EE, UK

Fishel, B. R., A. O. Sperry, et al. (1993). Yeast calmodulin and a conserved nuclear protein participate in the in vivo binding of a matrix association region. Proceedings of the National Academy of Sciences of the United States of America 90(12): 5623-5627. {a} Dep. Biochem., Univ. Texas Southwestern Med. Center, 5323 Harry Hines Boulevard, Dallas, TX 75235, USA

Fuchs, E. H. P. (1993). America's rediscovery by Christopher Columbus and the introduction of the potato in Europe. Feddes Repertorium 104(7-8): 519-536. Tignuppa 146, CH-7014 Trin-Vitg, Switzerland

Garcia, C. and M. A. Toro (1993). Larval competition and genetic diversity in Tribolium castaneum. Genetics Selection Evolution Paris 25(1): 31-40. {a} Facultad de Biologia, Area de Genetica, Departamento de Biologia Fundamental, Santiago de Compostela, Galicia, Spain

Gibb, K. S. and A. C. Padovan (1993). Detection of sweet potato feathery mottle potyvirus in sweet potato grown in northern Australia using an efficient and simple assay. International Journal of Pest Management 39(2): 223-228. Fac. Sci., Northern Territory Univ., PO Box 40146, Casuarian, NT 08111, Australia

Grant, P. J., J. Y. Lu, et al. (1993). Nutrient composition of sweetpotato storage roots altered by frequency of nutrient solution change. Hortscience 28(8): 802-804. {a} Food Sci., Tuskegee Univ., Tuskegee, AL 36088

Grimstad, S. O. (1993). Influence of paclobutrazol residues on greenhouse-bench surfaces and the effect on growth and development of cucumber and tomato young plants. Gartenbauwissenschaft 58(2): 59-63. Saerheim Agric. Res. Station, N-4062 Klepp St., Norway

Grisley, W. and M. Shamambo (1993). An analysis of the adoption and diffusion of Carioca beans in Zambia resulting from an experimental distribution of seed. Experimental Agriculture 29(3): 379-386. {a} Route 7, Box 152, Marion, IL 62959, USA

Hall, M. R. (1993). Midstorage heating increased plant production from bedded sweetpotato roots. Hortscience 28(8): 780-781. Dep. Horticulture, Univ. Georgia Coastal Plain Experiment Station, Tifton, GA 31793, USA

Hall, M. R. (1993). Yield comparisons of pulled and cut sweetpotato plants. Hortscience 28(7): 703-704. Dep. Horticulture, Univ. Georgia, Coastal Plain Experiment Station, Tifton, GA 31793

Hansen, J. D. (1993). Acoustical detection of the sweetpotato weevil (Coleoptera: Curculionidae) in sweet potato. Journal of Entomological Science 28(4): 453-461. Subtrop. Hortic. Res. Stn., USDA-ARS, Miami, FL 33158, USA

Hawkes, J. G. and O. J. Francisco (1993). The early history of the potato in Europe. Euphytica 70(1-2): 1-7. {a} Sch. Continuing Studies, Univ. Birmingham, Edgbaston, Birmingham B15 2TT, UK

Howeler, R. H., H. C. Ezumah, et al. (1993). Tillage systems for root and tuber crops in the tropics. Soil and Tillage Research 27(1-4): 211-240. {a} Dep. Agric., Centro Internacional de Agricultura Tropical, Bangkhen, Bangkok 10900, Thailand

Ishiguro, S., M. Tanaka, et al. (1993). A nuclear factor that binds to a dyad-symmetric sequence with a CGTCA motif in the 5'-upstream region of the sweet potato beta-amylase gene. Plant and Cell Physiology 34(4): 567-576. {a} Lab. Biochem., Sch. Agric., Nagoya Univ., Chikusa-ku, Nagoya 464-01, Japan

Isobe, K., H. Fujii, et al. (1993). Effects of charcoals on the rooting of cut-sprouts of sweet potato (Ipomoea batatas Lam.). Bulletin of the College of Agriculture and Veterinary Medicine Nihon University(50): 1-6. Lab. Crop Sci., Coll. Agric. and Vet. Med., Nihon Univ., 1866 Kameino, Fujisawa-shi, Kanagawa 252

Jansson, R. K., L. J. Mason, et al. (1993). Pheromone trap monitoring system for sweetpotato weevil (Coleoptera: Apionidae) in the Southern United States: Effects of lure type, age and duration in storage. Journal of Economic Entomology 86(4): 1109-1115. {a} Tropical Res. Education Cent., Inst. Food Agricultural Sciences, Univ. Fla., Homestead, FL 33031, USA

Kadiebwe, N. N. (1993). Study of the behavior in the field and of local varieties performances of sweet potato Ipomoea batatas in eastern Zaire. Tropicultura 11(2): 72-73. Centre Recherches l'INERA-NIOKA, Antenne Recherche Plantes Tubercules, B.P. 111, Via Bunia, Haut-Zaire, Zaire

Kannabiran, B. and S. Nadanakunjidam (1993). A note on the staminal glandular hairs of some members of Convolvulaceae. Advances in Plant Sciences 6(2): 355-358. {a} J. C. Bose Sch. Life Sci., Pondicherry Univ., Pondicherry-605 011, India

Kays, S. J., J. A. Harrison, et al. (1993). Semiartificial diet for the sweetpotato weevil (Coleoptera: Curculionidae). Journal of Economic Entomology 86(3): 957-961. {a} Dep. Hortic., Univ. Ga., Athens, GA 30602, USA

Khattak, T. M. and A. Majeed (1993). Seasonal activity of the cambium and radial growth of wood formation in Chir Pine (Pinus Roxburghii Sarg.). Sarhad Journal of Agriculture 9(3): 205-208. Dep. Botany, Univ. A. J. and K. Muzaffaradbad, Univ. Coll. Agric., Rawalakot, Azad Kashmir

Kihurani, A. W., L. G. Skoglundf, et al. (1993). Occurrence of sweetpotato chlorotic leaf distortion caused by Fusarium lateritium in Kenya. Plant Disease 77(12): 1260-1261. {a} National Agric. Research Lab., P.O. Box 14733, Nairobi, Kenya

Kim, W. T., X. Li, et al. (1993). Expression of storage protein multigene families in developing rice endosperm. Plant and Cell Physiology 34(4): 595-603. {a} Inst. Biol. Chem., Washington State Univ., Pullman, WA 99164-6340, USA

Kobayashi, R. S., S. L. Sinden, et al. (1993). Ovule culture of sweet potato (Ipomoea batatas) and closely related species. Plant Cell Tissue and Organ Culture 32(1): 77-82. {a} Dep. Hortic., Univ. Maryland, College Park, MD 20742, USA

Kokubu, T., Q. C. Liu, et al. (1993). Somatic embryogenesis and plant regeneration in shoot tip cultures of sweet potato, Ipomoea batatas (L.) Lam. Memoirs of the Faculty of Agriculture Kagoshima University 29: 53-57. Lab. Crop Sci., Fac. Agric., Kagoshima University, Kagoshima, Japan

Kokubu, T., T. Sugita, et al. (1993). Plant regeneration in leaf and petiole explant cultures of Ipomoea littoralis Blune. Memoirs of the Faculty of Agriculture Kagoshima University 29: 49-52. Lab. Crop Sci., Fac. Agric., Kagoshima University, Kagoshima, Japan

Kubota, F., K. Iizuka, et al. (1993). Photosynthetic control factors in a single leaf of sweet potato, Ipomoea batatas Lam.: 2. Sink-source relationship between photosynthesis and root weight production in single leaf grafts. Japanese Journal of Crop Science 62(2): 248-256. Fac. Agric., Kyushu Univ., Hakozaki, Higasiku, Fukuoka 812, Japan

Kubota, F., Y. Yoshimura, et al. (1993). Stomatal movement and CO-2 exchange rate of sweet potato plant (Ipomoea batatas Lam.) in relation to water environments - A comparison between native and improved varieties. Journal of the Faculty of Agriculture Kyushu University 38(1-2): 97-110. Laboratory Practical Botany, Faculty Agriculture, Kyushu University 46-01, Fukuoka 812, Japan

La, B. D. R. and M. E. Wright (1993). Image analysis quantifies reduction in sweetpotato skinning injury by preharvest canopy removal. Hortscience 28(12): 1201. {a} Dep. Horticulture, Louisiana State Univ. Agricultural Cent., Louisiana Agricultural Experiment Station, Baton Rouge, LA 70803-2120, USA

Lin, C. T., K. W. Yeh, et al. (1993). Cloning and characterization of a cDNA encoding the cytosolic copper/zinc-superoxide dismutase from sweet potato tuberous root. Plant Molecular Biology 23(4): 911-913. Dep. Bioeng., Tatung Inst. Technol., 40 Chungshan North Rd., 3rd sec. Taipei, Taiwan

Liu, Q. C., T. Kokubu, et al. (1993). Plant regeneration from protoplast fusions of Ipomoea batatas (L.) Lam. and Ipomoea triloba L. Memoirs of the Faculty of Agriculture Kagoshima University 29: 43-47. Lab. Crop Sci., Fac. Agric., Kagoshima University, Kagoshima, Japan

Liu, Q. C., T. Kokubu, et al. (1993). Varietal differences of somatic embryogenesis in shoot tip cultures of sweet potato, Ipomoea batatas (L.) Lam. Memoirs of the Faculty of Agriculture Kagoshima University 29: 39-42. Lab. Crop Sci., Fac. Agric., Kagohsima University, Kagoshima, Japan

Lopez, R. A., E. Palmisano, et al. (1993). Thermal properties of tropical fruits and vegetables. Revista Espanola de Ciencia y Tecnologia de Alimentos 33(3): 271-283. Dep. Termodinamica y Fenomenos de Transferencia, Univ. Simon Bolivar, Apartado Postal 8900, Caracas 1080, Venezuela

Marquez, G. J., M. Chavez, et al. (1993). Comparative morphological and phytochemical analysis of two varieties of sweet potatoes, Ipomoea batatas (L) Lam. Phyton Buenos Aires 54(1): 7-12. Dep. Biol., Fac. Ciencias, Universidad Nacional Autonoma Mexico, Ciudad Univerfsitaria, CP 04510, A. P. 70-356, Mexico, DF

Marsh, L. (1993). Moisture affects cowpea and okra seed emergence and growth at low temperatures. Hortscience 28(8): 774-777. Dep. Agric., Natural Resources and Home Economics, Lincoln Univ., Jefferson City, MO 65102-0029, USA

Marti, H. R., H. A. Mills, et al. (1993). Nutritional effects of sweetpotato storage root surface chemistry. Journal of Plant Nutrition 16(4): 653-665. {a} Inst. Nac. Tecnologia Agropecuaria, C.C.5, 3603 El Colorado, Argentina

McLaurin, W. J. and S. J. Kays (1993). Substantial leaf shedding: A consistent phenomenon among high-yielding sweet-potato cultivars. Hortscience 28(8): 826-827. Dep. Horticulture, Plant Sci. Build., Univ. Georgia Athens, GA 30602-7273, USA

Mont, J., M. Iwanaga, et al. (1993). Abortion and determination of stages for embryo rescue in crosses between sweet-potato, Ipomoea batatas Lam. (2n equals 6x equals 90) and its wild relative, Ipomoea trifida (HBK) G. Don. (2n equals 2x equals 30). Sexual Plant Reproduction 6(3): 176-182. {a} 252 Emerson Hall, Cornell Univ., Ithaca, NY 14853-1902, USA

Morita, K., T. Shiga, et al. (1993). Optical grading of Satsuma mandarin using linear discriminant function. Memoirs of the Faculty of Agriculture Kagoshima University 29: 101-111. {a} Lab. Agric. Syst. Eng., Kagoshima Univ., Kagoshima, Japan

Morrison, T. A., R. Pressey, et al. (1993). Changes in alpha- and beta-amylase during storage of sweetpotato lines with varying starch hydrolysis potential. Journal of the American Society for Horticultural Science 118(2): 236-242. {a} U.S. Dep. Agriculture, Agricultural Res. Service, Field Crops Res. Unit, Iowa State University, Ames, IA 50011, USA

Mortley, D. G. (1993). Manganese toxicity and tolerance in sweetpotato. Hortscience 28(8): 812-813. George Washington Carver Agricultural Experiment Station, Tuskegee Univ., Tuskegee, AL 36088, USA

Mortley, D. G., C. K. Bonsi, et al. (1993). Irradiance and nitrogen to potassium ratio influences sweetpotato yield in nutrient film technique. Crop Science 33(4): 782-784. {a} Dep. Agric. Sci., Sch. Agric. and Home Economics, Tuskegee Univ., Tuskegee, AL 36088, USA

Motsenbocker, C. E. and T. J. Monaco (1993). Differential tolerance of sweet potato (Ipomoea batatas) clones to metribuzin. Weed Technology 7(2): 349-354. {a} Dep. Hortic. Sci., Louisiana State Univ., Agric. Cent., 137 J.C. Miller Hall, Baton Rouge, LA 70803, USA

Murata, T. and H. Fukuoka (1993). Plant regeneration from another culture of sweet potato, Ipomoea batatas (L.) Lam. Proceedings of School of Agriculture Kyushu Tokai University 12: 1-9. Sch. Agric., Kyushu Tokai Univ., Choyo-son, Aso-gun, Kumamoto 869-14, Japan

Nakagawa, T., M. Maeshima, et al. (1993). The nuclear gene for subunit Vc of sweet potato cytochrome c oxidase. Plant and Cell Physiology 34(4): 621-626. {a} Research Inst. Molecular Genetics, Shimane Univ., Matsue 690, Japan

Naranjo, S. E. and J. M. Martin (1993). Comparative development, reproduction, and oviposition of pink bollworm (Lepidoptera: Gelechiidae) on a resistant okra-leaf cotton and commercial upland an pima cultivars. Journal of Economic Entomology 86(4): 1094-1103. Western Cotton Res. Lab., USDA-ARS, 4135 E. Broadway Road, Phoenix, AZ 85040, USA

Navvabzdeh, M. and M. J. Malakouti (1993). Development of DRIS norms for potato in the calcareous soils of Iran. Journal of Plant Nutrition 16(8): 1409-1416. Dep. Soil Sci., Tarbiat Modarres Univ., P.O. Box 14155-4838, Tehran, Iran

Neema, C., J. P. Laulhere, et al. (1993). Iron deficiency induced by chrysobactin in Saintpaulia leaves inoculated with Erwinia chrysanthemi. Plant Physiology Rockville 102(3): 967-973. {a} Lab. Pathol. Ve., Inst. Natl. Agronomique, 16 rue Claude Bernard, 75231 Paris, France

Ngeve, J. M. (1993). Regression analysis of genotype X environment interaction in sweet potato. Euphytica 71(3): 231-238. Institute Agronomic Research, Nkolbisson, B.P. 2123 Messa, Yaounde, Cameroon

Ngeve, J. M. and J. C. Bouwkamp (1993). Comparison of statistical methods to assess yield stability in sweetpotato. Journal of the American Society for Horticultural Science 118(2): 304-310. {a} Inst. of Agronomic Res., Nkolbisson, B.P. 2067, Yaounde, Cameroon

Nozue, M., H. Kubo, et al. (1993). Characterization of intravacuolar pigmented structures in anthocyanin-containing cells of sweet potato suspension cultures. Plant and Cell Physiology 34(6): 803-808. {a} Dep. Biol., Fac. Sci., Shinshu Univ., Asahi 3-1-1, Matsumoto 390, Japan

O, S. J. N., C. J. Asher, et al. (1993). Mineral nutrient disorders of root crops of the Pacific: Preliminary observations on sweet potato (Ipomoea batatas). Plant and Soil 155-156: 263-267. Dep. Agric., Univ. Queensland, Brisbane 4072, Australia

Otani, M., M. Mii, et al. (1993). Transformation of sweet potato (Ipomoea batatas (L.) Lam.) plants by Agrobacterium rhizogenes. Plant Science Limerick 94(1-2): 151-159. {a} Res. Inst. Agricultural Resources, Ishikawa Agric. Coll., Nonoichi-machi, Ishikawa 921, Japan

Pio, R. G., F. F. M. D. Assis, et al. (1993). Occurrence of sweet potato feathery mottle virus in sweet potato germplasm in the State of Pernambuco. Fitopatologia Brasileira 18(3): 458-460. {a} Dep. Agron., UFRPE, Dois Irmaos, 52171-900 Recife-PE, Brazil

Porter, W. C. (1993). Postemergence grass control in sweet potatoes (Ipomoea batatas). Weed Technology 7(4): 812-815. La. State Univ. Agric. Cent., La. Agric. Exp. Stn., Hammond Res. Stn., Hammond, LA 70403, USA

Powell, C. A., P. J. Stoffella, et al. (1993). Plant population influence on squash yield, sweetpotato whitefly, squash silverleaf, and zucchini yellow mosaic. Hortscience 28(8): 796-798. Agricultrual Res. and Education Cent., Inst. Food and Agric. Sci., Univ. Florida, Box 248, Fort Pierce, FL 34954, USA

Raj, B., O. P. S. Verma, et al. (1993). Effect of sowing time and cropping systems on pearlmillet-pigeonpea intercropping. Crop Research Hisar 6(2): 323-325. Dep. Agronomy, CCS Haryana Agricultural Univ., Hisar-125 004, India

Reid, C. A. M. and R. I. Storey (1993). Redescription of adult and larva of Colasposoma sellatum Baly (Coleoptera: Chrysomelidae: Eumolpinae): A pest of sweet potato in Australia. Journal of Natural History 27(3): 669-681. {a} Div. Botany Zool., Australian Natl. Univ., GPO Box 4, Canberra, ACT 2601, Australia

Reinhardt, C. F., R. Meissner, et al. (1993). Allelopathic effect of sweetpotato (Ipomoea batatas) cultivars on certain weed and vegetable species. South African Journal of Plant and Soil 10(1): 41-44. {a} Dep. Plant Prod., Univ. Pretoria, Pretoria 0002, South Africa

Ristaino, J. B. (1993). Infection of sweetpotato fibrous roots by Streptomyces ipomoeae: Influence of soil water potential. Soil Biology and Biochemistry 25(2): 185-192. Dep. Plant Pathol., North Carolina State Univ., Raleigh, NC 27695-7616, USA

Ristaino, J. B. (1993). Effect of resistance to Streptomyces ipomoeae on disease, yield, and dry matter partitioning in sweetpotato. Plant Disease 77(2): 193-196. Dep. Pathol., North Carolina State Univ., Raleigh, NC 27695-7616

Saito, T., B. Takahashi, et al. (1993). Effect of Ando sub-soil used as bed soil and calcium fertilizer utilization on the growth and fruit quality of muskmelon. Bulletin of the College of Agriculture and Veterinary Medicine Nihon University(50): 11-21. {a} Lab. Horticulture II, Junior Coll. Dep. Agric., Nihon Univ., 1866 Kameino, Fujisawa-shi, Kanagawa 252, Japan

Sanchez, V. M., F. J. Sundstrom, et al. (1993). Plant size influences bell pepper seed quality and yield. Hortscience 28(8): 809-811. {a} Integrated Coating and Seed Technol., 1293 Harkins Rd., Salinas CA 93901, USA

Sargetni, S. R., J. B. Fernandes, et al. (1993). Betaines, amino acids and waxes from Erythrochiton brasiliensis. Biochemical Systematics and Ecology 21(6-7): 723-727. {a} Dep. Quimica, Universidade Federal de Sao Carlos, Caixa Postal 676, 13565-905 Sao Carlos, SP, Brazil

Schalk, J. M., J. R. Bohac, et al. (1993). Potential of non-chemical control strategies for reduction of soil insect damage in sweetpotato. Journal of the American Society for Horticultural Science 118(5): 605-608. {a} U.S. Dep. Agric., Agric. Research Serv., U.S. Vegetable Lab., 2875 Savannah Highway, Charleston, SC 29414, USA

Schroeder, M. R., O. N. Borkhsenious, et al. (1993). Colocalization of barley lectin and sporamin in vacuoles of transgenic tobacco plants. Plant Physiology Rockville 101(2): 451-458. {a} Dep. Energy Plant Res. Lab., Mich. State Univ., East Lansing, MI 48824-1312, USA

Shen, W. C. and C. P. Lin (1993). Production of monoclonal antibodies against a mycoplasma-like organism associated with sweetpotato witches' broom. Phytopathology 83(6): 671-675. {a} Inst. Molecular Biol., Academia Sinica, Taipei, Taiwan 40227

Simonne, A. H., S. J. Kays, et al. (1993). Assessment of beta-carotene content in sweetpotato breeding lines in relation to dietary requirements. Journal of Food Composition and Analysis 6(4): 336-345. {a} Dep. Food Sci. and Technol., Univ. Ga., Athens, GA 30602-7610, USA

Skoglund, L. G., R. W. Gatumbi, et al. (1993). Non-viral foliar pathogens and disorders of sweet potato in Kenya. International Journal of Pest Management 39(4): 452-458. {a} Dep. Plant Pathol., Colo. State Univ., Fort Collins, CO 80523, USA

Steyn, P. J., A. F. Visser, et al. (1993). AMMI analysis of potato cultivar yield trials. South African Journal of Plant and Soil 10(1): 28-34. {a} Veg. Ornamental Plant Inst., Private Bag X293, Pretoria 0001, South Africa

Sun, J. B., R. F. Severson, et al. (1993). Quantitative technique for measuring volatile components of baked sweet-potatoes. Hortscience 28(11): 1110-1113. {a} Dep. Hortic., Univ. Georgia, Athens, GA 30602-7273, USA

Takahata, Y., T. Noda, et al. (1993). HPLC determination of beta-carotene content of sweet potato cultivars and its relationship with color values. Japanese Journal of Breeding 43(3): 421-427. {a} Dep. Crop Breeding, Kyushu Natl. Agric. Exp. Station, Nishigoshi, Kumamoto 861-11, Japan

Teguia, A., J. Tchoumboue, et al. (1993). The growth of broiler chickens as affected by the replacement of graded levels of maize by sweet potato leaves (Ipomoea batatas) or Ndole (Vernonia spp.) in the finisher diet. Animal Feed Science and Technology 40(2-3): 233-237. {a} Dep. Anim. Sci., I.NA.DE.R., Univ. Cent. Dschang, P.O. Box 110, Dschang, Cameroon

Teli, V. S. and G. N. Salunke (1993). Effect of border cropping on the infestation of sweet potato weevil, Cylas formicarius. Indian Journal of Plant Protection 21(2): 135-137. Dep. Entomol., Coll. Agric., Pune 411 005, Maharashtra, India

Wang, H. L., P. D. Lee, et al. (1993). Starch-accumulating sweet potato callus tissue devoid of beta-amylase but with two starch phosphorylase isozymes. Bioscience Biotechnology and Biochemistry 57(8): 1311-1315. {a} Biochem. Lab., Dep. Agric. Chem., National Taiwan Univ., 1 Roosevelt Road Section 4, Taipei, TAI 10764

Wiese, K. L. and E. R. Jackson (1993). Changes in thermal process times (B-b) for baked beans based on water hardness and fill temperature. Journal of Food Protection 56(7): 608-611. {a} Dep. Food Sci. Technol., Ohio State Univ., Columbus, OH 43210-1097

Wu, Y., C. Zhou, et al. (1993). Enzymatic isolation of viable nucelli at the megaspore mother cell stage and in developing embryo sacs in Nicotiana tabacum. Sexual Plant Reproduction 6(3): 171-175. {a} Inst. Botany, Univ. Munich, Menzinger Strasse 67, W-8000 Munich 19, Gr

Zhang, D., W. W. Collins, et al. (1993). Improving sweetpotato starch digestibility for animal feeding. Hortscience 28(4): 325-326. Dep. Hortic. Sci., Box 7609, North Carolina State Univ., Raleigh, NC 27695-7609, USA

Adigun, J. A., S. T. O. Lagoke, et al. (1992). Weed interference in transplanted sweet pepper (Capsicum annuum L.). Samaru Journal of Agricultural Research 9: 49-61. Dep. Agronomy, Inst. Agricultual Res., Ahmadu Bello University, Zaria, Nigeria

Almeida, M. L. B. D., M. D. V. C. Penteado, et al. (1992). Relationship between carotenoid content and Hunter colour parameters of Brazilian sweet potato (Ipomoea batatas Lam.). Revista Espanola de Ciencia y Tecnologia de Alimentos 32(6): 611-619. Dep. Alimentos Nutricao Experimental, Fac. Ciencias Farmaceuticas, Univ. Sao Paulo, Caixa Postal 66083, Sao Paulo, Brazil

Alves, J. M. C., J. E. B. P. Pinto, et al. (1992). Effect of the correlative inhibition and growth regulators in micropropagation of sweet potato (Ipomoea batatas (L.)Lam) plantlet from meristem culture. Ciencia e Pratica 16(3): 349-357. {a} Dep. de Agricultura da Escola Superior de Agricultura de Lavras, Lavrs-MG-Bolsista do CNPq, Portugal

Anselmo, R. J., S. Viora, et al. (1992). Xanthan gum production by immobilized Xanthomonas campestris. Revista Argentina de Microbiologia 24(2): 86-90. Univ. Nac. Lujan, C.C. 221, 6700 Lujan, Buenos Aires, Argentina

Barwal, R. N. (1992). New records of insects of sweet potato, Ipomoea batatas Poiret in the northeastern region. Journal of Insect Science 5(1): 95. IARI, Regional Station, Katrain, Kullu Valley 175 129, India

Batistuti, J. P., M. F. C. F. D. A. Valim, et al. (1992). Sweet potato (Ipomoea batatas L. Lam) starch: Chemical composition evaluation of the tubers and extraction, purification of starch from different varieties. Revista de Ciencias Farmaceuticas 14: 205-214. {a} Dep. Alimentos Nutricao, Fac. Ciencias Farmaceuticas, UNESP, 14800 Araraquara, SP

Belarmino, M. M., T. Abe, et al. (1992). Efficient plant regeneration from leaf calli of Ipomoea batatas (L.) Lam and its related species. Japanese Journal Of Breeding 42(1): 109-114.

Bradbury, J. H., B. C. Hammer, et al. (1992). Heat stability of trypsin inhibitors in tropical root crops and rice and its significance for nutrition. Journal Of The Science Of Food And Agriculture 58(1): 95-100.

Chalfant, R. B., M. R. Hall, et al. (1992). Effects of application methods, timing, and rates of insecticides and nematicides on yield and control of wireworms (Coleoptera: Elateridae) and nematodes (Tylenchida: Heteroderidae) that affect sweet potato. Journal Of Economic Entomology 85(3): 878-887.

Chee, R. P. and D. J. Cantliffe (1992). Improved production procedures for somatic embryos of sweetpotato for a synthetic seed system. Hortscience 27(12): 1314-1316. {a} Sigma Cell Culture, P.O. Box 14508, St. Louis, MO 63178, USA

Chee, R. P., D. I. Leskovar, et al. (1992). Optimizing embryogenic callus and embryo growth of a synthetic seed system for sweetpotato by varying media nutrient concentrations. Journal Of The American Society For Horticultural Science 117(4): 663-667.

Chen, L. F. O., H. F. Lo, et al. (1992). Peroxidase zymograms of sweet potato (Ipomoea batatas (L.) Lam.) grown under hydroponic culture. Botanical Bulletin Of Academia Sinica 33(3): 247-252.

Clark, C. A. (1992). Histological evidence that Fusarium lateritium is an exopathogen on sweetpotato with chlorotic-leaf distortion. Phytopathology 82(6): 656-663.

Collins, W. W. (1992). Inheritance of nectary color in Ipomoea trifida. Journal Of Heredity 83(2): 155-156.

Diaz, J., L. P. F. De, et al. (1992). Enlargement of fibrous roots in Ipomoea section Batatas (Convolvulaceae). Economic Botany 46(3): 323-329. {a} Dep. de Recursos Geneticos, Centro Internacional de la Papa, Apartado Postal 5969, Lima, Peru

Du, P. C. P., D. B. A. A. Van, et al. (1992). Storage root formation at individual nodes of the sweet potato (Ipomoea batatas (L.) Lam). South African Journal of Plant and Soil 9(3): 136-138. {a} Inst. Tropical Subtropical Crops, Private Bag X11208, Nelspruit 1200, South Africa

Duarte, V. and C. A. Clark (1992). Presence on sweetpotato through the growing season of Erwinia chrysanthemi, cause of stem and root rot. Plant Disease 76(1): 67-71.

Green, S. K., C. Y. Luo, et al. (1992). Elimination of leafcurl virus of sweet potato by meristem tip culture, heat and ribavirin. Plant Protection Bulletin 34(1): 1-7.

Green, S. K., S. C. S. Tsou, et al. (1992). The effect of meristeming on yield, quality and on virus reinfection of sweet potato. Plant Protection Bulletin Taichung 34(3): 192-201. Asian Vegetable Res., Dep. Center, Shanhua, Tainan, Taiwan

Hagenimana, V., L. P. Vezina, et al. (1992). Distribution of amylases within sweet potato (Ipomoea batatas L.) root tissue. Journal of Agricultural and Food Chemistry 40(10): 1777-1783. {a} Dep. Sci. Technologie Aliments, Univ. Laval, Ste-Foy, Quebec G1K 7P4, Canada

Hall, M. R. (1992). Brief extensions of curing and presprouting increased plant production from bedded sweetpotato. Hortscience 27(10): 1080-1082. Dep. Horticult., Univ. Ga. Coastal Plain Experiment Station, Tifton, Ga. 31793

Hammond, J., R. L. Jordan, et al. (1992). Use of polyclonal antisera and monoclonal antibodies to examine serological relationships among three filamentous viruses of sweetpotato. Phytopathology 82(6): 713-717.

Hansen, J. D., C. L. Emerson, et al. (1992). Visual detection of sweetpotato weevil by non-invasive methods. Florida Entomologist 75(3): 369-375. {a} Subtropical Horticulture Res. Station, USDA-ARS, 13601 Old Cutler Rd., Miami, Fla. 33158

Harrell, R. C., M. Bieniek, et al. (1992). Noninvasive evaluation of somatic embyrogenesis. Biotechnology And Bioengineering 39(4): 378-383.

Ishiguro, S. and K. Nakamura (1992). The nuclear factor SP8BF binds to the 5'-upstream regions of three different genes coding for major proteins of sweet potato tuberous roots. Plant Molecular Biology 18(1): 97-108.

Jansson, R. K., L. J. Mason, et al. (1992). Pheromone-trap monitoring system for sweet potato weevil (Coleoptera: Apionidae): Effects of pheromone source and purity. Tropical Pest Management 38(2): 196-200.

Jansson, R. K., L. J. Mason, et al. (1992). Pheromone-trap monitoring system for sweetpotato weevil (Coleoptera: Apionidae) in the southern United States: Effects of trap type and pheromone dose. Journal Of Economic Entomology 85(2): 416-423.

Jarret, R. L., N. Gawel, et al. (1992). Phylogenetic relationships of the sweetpotato (Ipomoea batatas (L.) Lam.). Journal Of The American Society For Horticultural Science 117(4): 633-637.

Jorge, N. J. and B. Mancini (1992). Chromatographic analysis quali-quantitative by gas chromatography of leaves of Dialium guianense (Aubl.) Sandw., Leguminosae. Revista de Ciencias Farmaceuticas 14: 125-132. Dep. Principios Ativos Naturais Toxicologia-Fac. Ciencias Farmaceuticas-Unesp-14800-Araraquara-SP

Kim, J. H., H. Jung, et al. (1992). Plant regeneration of sweet potato (Ipomoea batatas L.) from root tissue cultured in vitro. Journal Of The Korean Society For Horticultural Science 33(2): 111-117.

Kubota, F., M. Yatomi, et al. (1992). Carbon dioxide exchange rate in sweet potato (Ipomoea batatas Lam.) leaves with and without lower epidermis. Photosynthetica Prague 26(2): 257-260. Kyushu Univ., Fac. Agric., Hakozaki, Higashi-ku, Fukuoka 812, Japan

Lage, C. L. S. and M. A. Esquibel (1992). Developmental changes induced by gamma irradiation in Ipomoea batatas L. Lam (sweet potato). Radiation Research 132(2): 237-241. {a} Lab. Fisiologia Vegetal, Instituto Biofisica Carlos Chagas Filho, UFRJ, CCS, Bl. G, Cidade Universitaria, 21941 Rio de Janeiro, RJ, Brazil

Levett, M. P. (1992). Effects of various hand-weeding programmes on yield and components of yield of sweet potato (Ipomoea batatas) grown in the tropical lowlands of Papua New Guinea. Journal Of Agricultural Science 118(1): 63-70.

Li, L., C. H. Liao, et al. (1992). Environmental effects on the physico-chemical properties and eating quality of sweet potatoes. Journal of the Agricultural Association of China New Series(160): 30-42. Dep. Horticulture, Chinese Culture Univ., Taipei, Taiwan

Lin, Y. H. and H. Y. Chan (1992). An aminopeptidase (AP1) from sprouts of sweet potato (Ipomoea batatas (L.) Lam. cv. Tainong 64). Botanical Bulletin Of Academia Sinica 33(3): 253-261.

Lin, Y. H. and H. Y. Chann (1992). An aminopeptidase (AP2) from spouts of sweet potato (Ipomoea batatas (L.) Lam. cv. Tainong 64). Botanical Bulletin Of Academia Sinica 33(3): 263-269.

Liu, Q. C., T. Kokubu, et al. (1992). Plant regeneration from callus and protoplasts of sweet potato, Ipomoea batatas (L.) Lam. Memoirs Of The Faculty Of Agriculture Kagoshima University 28: 47-53.

Lourenco, E. J., V. A. Neves, et al. (1992). Polyphenol oxidase from sweet potato: Purification and properties. Journal of Agricultural and Food Chemistry 40(12): 2369-2373. {a} Dep. Food Nutr., FCF, UNESP, Rodovia Araraquara-Jau Km 1, C.P. 502, 14800 Araraquara, Brazil

Ma, S., J. L. Silva, et al. (1992). Prevention of enzymatic darkening in frozen sweet potatoes (Ipomoea batatas (L.) Lam.) by water blanching: Relationship among darkening, phenols, and polyphenol oxidase activity. Journal Of Agricultural And Food Chemistry 40(5): 864-867.

Mannion, C. M. and R. K. Jansson (1992). Comparison of ten entomopathogenic nematodes for control of sweetpotato weevil (Coleoptera: Apionidae). Journal of Economic Entomology 85(5): 1642-1650. University Florida, Institute Food Agricultural Sciences, Tropical Research Education Center, 18905 S.W. 280th Street, Homestead, Fla. 33031

Miyazaki, T. (1992). Changes in surface color and anthocyanins in the periderm of sweet potato (Ipomoea batatas L.) cultivars during growth and storage. Journal Of The Japanese Society For Horticultural Science 61(1): 191-197.

Monks, D. W., K. E. Kalmowitz, et al. (1992). Influence of herbicides on sweetpotato (Ipomoea batatas) plant production. Weed Technology 6(1): 136-138.

Nakagawa, T., M. Maeshima, et al. (1992). Properties of the dicyclohexylcarbodiimide-binding subunit of cytochrome c oxidase from sweet potato. Plant And Cell Physiology 33(4): 489-491.

Nakatani, M. (1992). Factors influencing the rooting of cut-sprouts in sweet potato (Ipomoea batatas Lam.). Bulletin of the National Agriculture Research Center(21): 1-53. National Agric. Research Center, Ministry of Agric., Forestry Fisheries, Tsukuba-shi, Ibaraki 305, Japan

Nakatani, M. and Y. Koda (1992). Potato tuber-inducing activity of the extracts of some root and tuber crops. Japanese Journal Of Crop Science 61(3): 394-400.

Nakatani, M. and M. Komeichi (1992). Relationship between starch content and activity of starch synthase and ADP-glucose pyrophosphorylase in tuberous root of sweet potato. Japanese Journal Of Crop Science 61(3): 463-468.

Negi, S. C. (1992). Effect of nitrogen and phosphorus in temperate hill-grown vegetable pea (Pisum sativum). Indian Journal of Agronomy 37(4): 772-774. Regional Res. Station, Himachal Pradesh Krishi Vishvavidyalaya, Kukumseri 175 142

Ngeve, J. M., S. K. Hahn, et al. (1992). Effects of altitude and environments on sweet potato yield in Cameroon. Tropical Agriculture 69(1): 43-48.

Noda, N., S. Yoda, et al. (1992). Resin glycosides: XV. Simonins I-V, ether-soluble resin glycosides (jalapins) from the roots of Ipomoea batatas (cv. Simon). Chemical and Pharmaceutical Bulletin Tokyo 40(12): 3163-3168. {a} Fac. Pharmaceutical Sci., Setsunan Univ., 45-1 Nagaotoge-cho, Hirakata, Osaka 573-01, Japan

Nwinyi, S. C. O. (1992). Effect of age at shoot removal on tuber and shoot yields at harvest of five sweet potato (Ipomoea batatas (L.) Lam) cultivars. Field Crops Research 29(1): 47-54.

O, K. D. M. and D. M. Sylvia (1992). Chronology and mechanisms of phosphorus uptake by mycorrhizal sweet potato plants. New Phytologist 122(4): 651-659. Soil Sci. Dep., Univ. Florida, Gainesville, FL 32611-0290, USA

Odake, K., N. Terahara, et al. (1992). Chemical structures of two anthocyanins from purple sweet potato, Ipomoea batatas. Phytochemistry 31(6): 2127-2130.

Ohto, M. A., K. K. Nakamura, et al. (1992). Induction of expression of genes coding for sporamin and beta-amylase by polygalacturonic acid in leaf-petiole cuttings of sweet potato. Plant Physiology 99(2): 422-427.

Pakhomova, V. M. (1992). The role of the initial physiological state of cells of excised wheat roots in response to alternating effects. Biologicheskie Nauki Moscow(7): 104-110. Inst. Biol., Kazan Sci. Cent., Acad. Sci. Russ., Kazan, Russia

Paula, M. A., S. Urquiaga, et al. (1992). Synergistic effects of vesicular-arbuscular mycorrhizal fungi and diazotrophic bacteria on nutrition and growth of sweet potato (Ipomoea batatas). Biology and Fertility of Soils 14(1): 61-66. {a} EMBRAPA-Centro Nacional Pesquisa Biologia Solo, 23851 Seropedica, Itaguai, Rio de Janeiro, Brazil

Prakash, C. S. and U. Varadarajan (1992). Genetic transformation of sweet potato by particle bombardment. Plant Cell Reports 11(2): 53-57.

Rao, S. R. S. and M. Leela (1992). Chemotaxonomy of some Ipomoea L. (Convolvulaceae). Feddes Repertorium 103(5-6): 351-355.

Reyes, L. M. and W. W. Collins (1992). Genetic control of seven enzyme systems in Ipomoea species. Journal of the American Society for Horticultural Science 117(6): 1000-1005. Dep. Hortic. Sci., North Carolina State Univ., Box 7609, Raleigh, NC 27695

Ristaino, J. B. and C. W. Averre (1992). Effects of irrigation, sulfur, and fumigation on streptomyces soil rot and yield components in sweetpotato. Phytopathology 82(6): 670-677.

Schalk, J. M., A. Jones, et al. (1992). Responses of soil insects to mixed and contiguous plantings of resistant and susceptible sweetpotato cultivars. Hortscience 27(10): 1089-1091. {a} U.S. Veg. Lab., Agric. Res. Serv., U.S. Dep. Agric., Charleston, S.C. 29414

Schultheis, J. R. and D. J. Cantliffe (1992). Growth of somatic embryos of sweet potato (Ipomoea batatas (L.) Lam) in hydroxyethyl cellulose gel amended with salts and carbohydrates. Scientia Horticulturae 50(1-2): 21-33.

Seal, D. R., R. B. Chalfant, et al. (1992). Effectiveness of different seed baits and baiting methods for wireworms (Coleoptera: Elateridae) in sweetpotato. Environmental Entomology 21(5): 957-963. {a} Tropical Res. Education Center, Univ. Fla., 18950 S.W. 280 St., Homestead, Fla. 33031

Shi, Z., I. A. Bassa, et al. (1992). Anthocyanin pigments of sweet potatoes: Ipomoea batatas. Journal Of Food Science 57(3): 755-757.

Shivankar, V. J. and V. S. Kavadia (1992). Effect of post-harvest processes on heptachlor residues in potato, sweet potato and onion. Tropical Agriculture 69(1): 25-28.

Siddique, A. K. M. A. R. and S. N. Gupta (1992). Path coefficient analysis of yield components in cowpea (Vigna unguiculata (L.) Walp.). Annals of Biology Ludhiana 8(1): 77-80. Regional Agric. Res. Stn., Bangladesh Agric. Res. Inst., Hathazari, Chittagong-4330, Bangladesh

Sinha, S. and S. N. Sharma (1992). Pollen morphology of Ipomoea spp. and its taxonomic importance. Acta Botanica Indica 20(1): 63-67. U G C Cent. Special Assistance, Dep. Botany, Patna Univ., Patna 800 005, India

Sinha, S. and S. N. Sharma (1992). Taxonomic significance of karyomorphology in Ipomoea spp. Cytologia Tokyo 57(3): 289-293. Dep. Bot., Patna Univ., Patna-800005, India

Stegemann, H., A. A. Shah, et al. (1992). Sweet potato (Ipomoea batatas L.): Genotype identification by electrophoretic methods and properties of their proteins. Plant Varieties & Seeds 5(2): 83-91.

Sylvia, D. M. and A. G. Jarstfer (1992). Sheared-root inocula of vesicular-arbuscular mycorrhizal fungi. Applied And Environmental Microbiology 58(1): 229-232.

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Orjeda, G., R. Freyre, et al. (1991). Use of Ipomoea trifida germ plasm for sweet potato improvement: 3. Development of 4x interspecific hybrids between Ipomoea batatas (L.) Lam. (2n equals 6x equals 90) and Ipomoea trifida (HBK) G. Don. (2n equals 2x equals 30) as storage-root initiators for wild species. Theoretical And Applied Genetics 83(2): 159-163.

Paula, M. A., V. M. Reis, et al. (1991). Interactions of Glomus clarum with Acetobacter diazotrophicus in infection of sweet potato (Ipomoea batatas), sugarcane (Saccharum spp.) and sweet sorghum (Sorghum vulgare). Biology And Fertility Of Soils 11(2): 111-115.

Perera, S. C. and A. P. Ozias (1991). Regeneration from sweetpotato protoplasts and assessment of growth conditions for flow-sorting of fusion mixtures. Journal Of The American Society For Horticultural Science 116(5): 917-922.

Peterson, J. K. and H. F. J. Harrison (1991). Isolation of substance from sweet potato (Ipomoea batatas) periderm tissue that inhibits seed germination. Journal Of Chemical Ecology 17(5): 943-952.

Peterson, J. K. and H. F. J. Harrison (1991). Differential inhibition of seed germination by sweetpotato (Ipomoea batatas) root periderm extracts. Weed Science 39(1): 119-123.

Porter, W. C. (1991). Bed covers alter temporal distribution of production of sweetpotato transplants. Hortscience 26(3): 252-253.

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Son, K. C., R. F. Severson, et al. (1991). A rapid method for screening sweetpotato genotypes for oviposition stimulants to the sweetpotato weevil. Hortscience 26(4): 409-410.

Souto, M. A. M., J. A. A. Pereira, et al. (1991). Utilization of sweet potato meal for swine in the initial growing phase. Revista Da Sociedade Brasileira De Zootecnia 20(6): 596-603.

St, A. P. C. and W. M. Randle (1991). Ethylene production as a possible indicator of wound healing in roots of several sweet potato cultivars. Euphytica 53(2): 97-102.

Takeno, K. (1991). Flowering response of Ipomoea batatas scions grafted onto Pharbitis nil stocks. Physiologia Plantarum 83(4): 682-686.

Tanaka, M. and M. Kojima (1991). Purification and characterization of p-coumaroyl-D-glucose hydroxylase of sweet potato (Ipomoea batatas) roots. Archives Of Biochemistry And Biophysics 284(1): 151-157.

Terashima, S., M. Shimizu, et al. (1991). Studies on aldose reductase inhibitors from natural products: IV. Constituents and aldose reductase inhibitory effect of Chrysanthemum morifolium, Bixa orellana and Ipomoea batatas. Chemical & Pharmaceutical Bulletin 39(12): 3346-3347.

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Woods, F. M., J. O. J. Garner, et al. (1991). Estimation of chilling sensitivity in leaves of sweet potato by chlorophyll fluorescence and electrolyte leakage. Phyton 52(1): 33-37.

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Bhagsari, A. S. (1990). Photosynthetic evaluation of sweetpotato germplasm. Journal Of The American Society For Horticultural Science 115(4): 634-639.

Bhagsari, A. S. and D. A. Ashley (1990). Relationship of photosynthesis and harvest index to sweet potato yield. Journal Of The American Society For Horticultural Science 115(2): 288-293.

Bhattacharya, N. C., D. R. Hileman, et al. (1990). Interaction of enriched carbon dioxide and water stress on the physiology of and biomass production in sweet potato grown in open-top chambers. Plant Cell And Environment 13(9): 933-940.

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Chee, R. P., J. R. Schultheis, et al. (1990). Plant recovery from sweetpotato somatic embryos. Hortscience 25(7): 795-797.

Clark, C. A., R. A. Valverde, et al. (1990). Fusarium lateritium, causal agent of sweetpotato chlorotic leaf distortion. Phytopathology 80(8): 741-744.

Coleman, T. L., A. U. Eke, et al. (1990). Nutrient losses in eroded sediment from a limited-resource farm. Field Crops Research 24(1-2): 105-118.

Delate, K. M., J. K. Brecht, et al. (1990). Controlled atmosphere treatments for control of sweetpotato weevil (Coleoptera: Curculionidae) in stored tropical sweet potatoes. Journal Of Economic Entomology 83(2): 461-465.

Glaze, N. C. and M. R. Hall (1990). Cultivation and herbicides for weed control in sweet potato (Ipomoea batatas). Weed Technology 4(3): 518-523.

Haase, P. (1990). Potential plant genetic resources of the New Zealand flora. Economic Botany 44(4): 503-515.

Hall, M. R. (1990). Short-duration presprouting, ethephon, and cutting increase plant production by sweetpotato roots. Hortscience 25(4): 403-404.

Hattori, T., S. Nakagawa, et al. (1990). High-level expression of tuberous root storage protein genes of sweet potato in stems of plantlets grown in vitro on sucrose medium. Plant Molecular Biology 14(4): 595-604.

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Israelstam, G. F. and P. C. T. Chan (1990). Influx and efflux of inorganic phosphate in sweet potato slices: Effects of abscisic acid on bi-phasic kinetics. Biologia Plantarum Prague 32(2): 138-144. Univ. Toronto, Scarborough Campus, Military Trail, West Hill, Ontario, Can. M1C 1A4

Jansson, R. K., A. G. B. Hunsberger, et al. (1990). Seasonal abundance, population growth, and within-plant distribution of sweetpotato weevil (Coleoptera: Curculionidae) on sweet potato in southern Florida (USA). Environmental Entomology 19(2): 313-321.

Jansson, R. K., F. I. Proshold, et al. (1990). Monitoring sweetpotato weevil (Coleoptera: Curculionidae) with sex pheromone: Effects of dosage and age of septa. Tropical Pest Management 36(3): 263-269.

Jones, A. (1990). Unreduced pollen in a wild tetraploid relative of sweetpotato. Journal Of The American Society For Horticultural Science 115(3): 512-516.

Kawanishi, K., J. Yasufuku, et al. (1990). Long-chain alkyl ferulates in three varieties of Ipomoea batatas (L.) Lam. Journal Of Agricultural And Food Chemistry 38(1): 105-108.

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Kumagai, T., Y. Umemura, et al. (1990). The inheritance of beta-amylase null in storage roots of sweet potato, Ipomoea batatas (L.) Lam. Theoretical And Applied Genetics 79(3): 369-376.

Lardizabal, R. D. and P. G. Thompson (1990). Growth regulators combined with grafting increase flower number and seed production in sweet potato. Hortscience 25(1): 79-81.

Li, L. and C. H. Kao (1990). Variation of sweet potatoes with respect to source potentials and sink capacities. Euphytica 47(2): 131-138.

Lin, Y. H. and H. Y. Chan (1990). Purification and properties of endopeptidases of sprouts of sweet potato (Ipomoea batatas L. Lam. cultivar Tainong 64). Botanical Bulletin Of Academia Sinica 31(1): 19-28.

Liu, Q. C., T. Kokubu, et al. (1990). Plant regeneration in stem, petiole and leaf explant cultures of Ipomoea triloba L. Japanese Journal Of Breeding 40(3): 321-328.

McDonald, J. A. and D. F. Austin (1990). Changes and additions in Ipomoea section Batatas (Convolvulaceae). Brittonia 42(2): 116-120.

Miyazaki, T. (1990). Effects of curing, storage conditions, and cooking on the composition of sweet-potatoes. Journal Of The Japanese Society For Horticultural Science 59(3): 649-656.

Mortley, D. G. and W. A. Hill (1990). Sweetpotato growth and nitrogen content following nitrogen application and inoculation with Azospirillum. Hortscience 25(7): 758-759.

Nakagawa, T., M. Maeshima, et al. (1990). Molecular cloning of a complementary DNA for the smallest nuclear-encoded subunit of sweet potato cytochrome c oxidase: Analysis with the complementary DNA of the structure and import into mitochondria of the subunit. European Journal Of Biochemistry 191(3): 557-562.

Ngeve, J. M. (1990). Yield stability and yield depression in sweet-potato cultivars susceptible to the sweet potato virus disease. Journal Of Horticultural Science 65(2): 225-230.

Oracion, M. Z., K. Niwa, et al. (1990). Cytological analysis of tetraploid hybrids between sweet potato and diploid Ipomoea trifida (H.B.K.) Don. Theoretical And Applied Genetics 80(5): 617-624.

Orjeda, G., R. Freyre, et al. (1990). Production of 2n pollen in diploid Ipomoea trifida, a putative wild ancestor of sweet potato. Journal Of Heredity 81(6): 462-467.

Porter, W. C. (1990). Clomazone for weed control in sweet potatoes (Ipomoea batatas). Weed Technology 4(3): 648-651.

Rajamma, P. (1990). Evaluation of some newer insecticides for the control of the sweet potato weevil, Cylas formicarius Fab. Entomon 15(3-4): 241-244.

Rao, S. R. S. and M. Leela (1990). Leaf architecture in relation to taxonomy: Ipomoea L. Feddes Repertorium 101(11-12): 611-616.

Rodriguez, K. R., D. Boube, et al. (1990). Chitinous materials from blue crab for control of root-knot nematode: II. Effect of soybean meal. Nematropica 20(2): 153-168.

Sattelmacher, B., H. Marschner, et al. (1990). Effects of the temperature of the rooting zone on the growth and development of roots of potato (Solanum tuberosum). Annals Of Botany 65(1): 27-36.

Schulthies, J. R., D. J. Cantliffe, et al. (1990). Optimizing sweet potato (Ipomoea batatas (L.) Lam.) root and plantlet formation by selection of proper embryo developmental stage and size, and gel type for fluidized sowing. Plant Cell Reports 9(7): 356-359.

Shivankar, V. J. and V. S. Kavadia (1990). Absorption of heptachlor in potato, sweet potato and onion from pre-harvest side-dressing and its dissipation by post-harvest processings. Indian Journal Of Plant Protection 18(2): 167-176.

Singhel, M. S., R. Singh, et al. (1990). Production potential of sweet potato cultivars (Ipomoea batatas (L.) Lam.) under Jabalpur (India) conditions. Narendra Deva Journal Of Agricultural Research 5(1): 55-59.

Smith, M. K. and R. A. Drew (1990). Current applications of tissue culture in plant propagation and improvement. Australian Journal Of Plant Physiology 17(3): 267-290.

Smittle, D. A., M. R. Hall, et al. (1990). Effects of irrigation regimes on yield and water use by sweetpotato. Journal Of The American Society For Horticultural Science 115(5): 712-714.

Somda, Z. C. and S. J. Kays (1990). Sweet potato canopy morphology: Leaf distribution. Journal Of The American Society For Horticultural Science 115(1): 39-45.

Somda, Z. C. and S. J. Kays (1990). Sweet potato canopy architecture: Branching pattern. Journal Of The American Society For Horticultural Science 115(1): 33-38.

Son, K. C., R. F. Severson, et al. (1990). Surface chemical differences between sweetpotato lines with varying levels of resistance to the sweetpotato weevil. Journal Of The American Society For Horticultural Science 115(4): 696-699.

Son, K. C., R. F. Severson, et al. (1990). Isolation and characterization of pentacyclic triterpene ovipositional stimulant for the sweet potato weevil from Ipomoea batatas (L.) Lam. Journal Of Agricultural And Food Chemistry 38(1): 134-137.

Tarumoto, I., T. Shiga, et al. (1990). New sweet potato cultivar "Fusabeni". Bulletin Of The National Agriculture Research Center(19): 17-38.

Uewada, T. (1990). The solution culture of sweet potatoes. Environment Control In Biology 28(4): 135-140.

Wolff, X. Y. and R. R. Coltman (1990). Productivity under shade in Hawaii (USA) of five crops grown as vegetables in the tropics. Journal Of The American Society For Horticultural Science 115(1): 175-181.

Wolters, P., W. Collins, et al. (1990). Probable lack of seed transmission of sweet potato feathery mottle virus in sweet potato. Hortscience 25(4): 448-449.

Bhale, U., M. S. Bhale, et al. (1989). Studies on vine rot of sweet-potato (Ipomoea batatas L.) caused by Sclerotium rolfsii Sacc. in Madhya Pradesh, India. International Journal Of Tropical Plant Diseases 7(1): 105-106.

Bhattacharya, N. C., S. Bhattacharya, et al. (1989). Biochemical changes in carbohydrates and proteins of sweet-potato plants (Ipomoea batatas (L.) Lam.) in response to enriched carbon dioxide environment at different stages of growth and development. Journal Of Plant Physiology 135(3): 261-266.

Bouwkamp, J. C. (1989). Differences in mid-day wilting and yield among sweet potato genotypes. Journal Of The American Society For Horticultural Science 114(3): 383-386.

Bruns, H. A. and J. C. Bouwkamp (1989). Nutrient concentrations, content, and uptake by sweet potatoes grown in varying intra-row plant spacings. Field Crops Research 22(1): 17-26.

Chee, R. P. and D. J. Cantliffe (1989). Inhibition of somatic embryogenesis in response to 2,3,5-triiodobenzoic acid and 2,4-d in Ipomoea batatas (L.) Lam. cultured in vitro. Journal Of Plant Physiology 135(4): 398-403.

Chee, R. P. and D. J. Cantliffe (1989). Embryo development from discrete cell aggregates in Ipomoea batatas (L.) Lam. in response to structural polarity. In Vitro Cellular & Developmental Biology 25(8): 757-760.

Chee, R. P. and D. J. Cantliffe (1989). Composition of embryogenic suspension cultures of Ipomoea batatas Poir. and production of individualized embryos. Plant Cell Tissue And Organ Culture 17(1): 39-52.

Clark, C. A. (1989). Influence of volatiles from healthy and decaying sweet potato storage roots on sclerotial germination and hyphal growth of Sclerotium rolfsii. Canadian Journal Of Botany 67(1): 53-57.

Clark, C. A., A. J. A. Wilder, et al. (1989). Resistance of sweet potato to bacterial root and stem rot caused by Erwinia chrysanthemi. Plant Disease 73(12): 984-987.

Delate, K. M. and J. K. Brecht (1989). Quality of tropical sweet potatoes exposed to controlled-atmosphere treatments for postharvest insect control. Journal Of The American Society For Horticultural Science 114(6): 963-968.

Gol'Berg, A. M., A. H. Avigdori, et al. (1989). Insecticide control of a white grub, Maladera matrida, on sweet potato. Phytoparasitica 17(3): 175-184.

Hattori, T., N. Yoshida, et al. (1989). Structural relationship among the members of a multigene family coding for the sweet potato tuberous root storage protein. Plant Molecular Biology 13(5): 563-572.

Hosein, R. and W. A. Mellowes (1989). Malt hydrolysis of sweet-potatoes and eddoes for ethanol production. Biological Wastes 29(4): 263-270.

Houndonougbo, B. (1989). Influence of different concentrations of indole 8 acetic acid (IAA), naphthaleneacetic acid (NAA), 2,4-dichlorophenoxyacetic acid (2,4-D) and kinetin on the callusing and the organogenesis in vitro of internode fragments of two varieties of sweet potato (Ipomoea batatas L. Lam.). Agronomie 9(7): 653-660.

Jansson, R. K., R. R. Heath, et al. (1989). Temporal and spatial patterns of sweet potato weevil (Coleoptera: Curculionidae) counts in pheromone-baited traps in white-fleshed sweet potato fields in southern Florida (USA). Environmental Entomology 18(4): 691-697.

Lin, Y. H. (1989). Relationship between trypsin-inhibitor activity and water-soluble protein and cumulative rainfall in sweet potatoes. Journal Of The American Society For Horticultural Science 114(5): 814-818.

Lin, Y. H. and H. H. Chu (1989). Endopeptidases of sprouts and resting roots of sweet potato (Ipomoea batatas (L.) Lam. cultivar Tainong 57). Journal Of The Chinese Biochemical Society 18(1): 18-28.

Liu, J. R. and D. J. Cantliffe (1989). Callus formation from suspension culture-derived protoplasts of sweet potato (Ipomoea batatas). Korean Journal Of Botany 32(4): 247-254.

Murata, T., H. Fukuoka, et al. (1989). Culture condition on shoot tip culture of sweet potato, Ipomoea batatas (L.) Lam. Proceedings Of Faculty Of Agriculture Kyushu Tokai University 8: 9-14.

Murata, T., T. Fukuoka, et al. (1989). Production of plants with reduced chromosome number by p-fluorophenylalanine treatment in sweet potato, Ipomoea batatas (L.) Lam. Proceedings Of Faculty Of Agriculture Kyushu Tokai University 8: 15-22.

Nakatani, M., A. Oyanagi, et al. (1989). Effects of soil temperatures on the rooting of cut-sprouts of sweet potato (Ipomoea batatas Lam.): II. Varietal differences in the optimum soil temperature for rooting and the rooting ability under the low soil temperature. Japanese Journal Of Crop Science 58(1): 35-41.

Nottingham, S. F., K. C. Son, et al. (1989). Feeding and oviposition preferences of sweet potato weevil, Cylas formicarius elegantulus (Summers), on storage roots of sweet potato cultivars with differing surface chemistries. Journal Of Chemical Ecology 15(3): 895-904.

Oboh, S., A. Ologhobo, et al. (1989). Some aspects of the biochemistry and nutritional value of the sweet potato (Ipomoea batatas). Food Chemistry 31(1): 9-18.

Pardales, J. R. J. and D. V. J. Belmonte (1989). Comparative patterns of dry matter production in bushy and spreading sweet potato cultivars. Experimental Agriculture 25(2): 243-248.

Paton, J. E. and F. M. Scriven (1989). Use of NAA to inhibit sprouting in sweet potatoes (Ipomoea batatas). Journal Of The Science Of Food And Agriculture 48(4): 421-428.

Schalk, J. M. and C. S. Creighton (1989). Influence of sweet potato cultivars in combination with a biological control agent (Nematoda: Heterorhabditis heliothidis) on larval development of the banded cucumber beetle (Coleoptera: Chrysomelidae). Environmental Entomology 18(5): 897-899.

Silva, J. L., M. Yazid, et al. (1989). Effect of processing method on products made from sweet potato mash. Journal Of Food Quality 11(5): 387-396.

St, A. P. C. and W. M. Randle (1989). Ethylene production and wound healing in sweet potato roots. Hortscience 24(5): 805-807.

Sun, E. J. (1989). Sweet-potato used as a biological indicator for acute air pollution injury. Plant Protection Bulletin 31(3): 248-255.

Varon, D., W. Collins, et al. (1989). Ipomoein is the major soluble protein of sweet potato storage roots. Hortscience 24(5): 829-830.

Walker, D. W., T. J. Hubbell, et al. (1989). Influence of decaying sweet potato crop residues on nutrient uptake of sweet potato plants. Agriculture Ecosystems & Environment 26(1): 45-52.

Walker, D. W., K. J. Poche, et al. (1989). Cultivar differences for nitrogen uptake and dry matter partitioning in hydroponically-grown sweet potato. Communications In Soil Science And Plant Analysis 20(5-6): 567-580.

Walter, W. M. J., L. K. Hammett, et al. (1989). Wound healing and weight loss of sweet potatoes harvested at several soil temperatures. Journal Of The American Society For Horticultural Science 114(1): 94-100.

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Almeida, L. B. and M. V. C. Penteado (1988). Carotenoids and provitamin A value of white fleshed Brazilian sweet potatoes (Ipomoea batatas Lam.). Journal Of Food Composition And Analysis 1(4): 341-352.

Almeida, L. B. D., M. D. V. C. Penteado, et al. (1988). Isolation and absolute configuration of beta,beta-carotene diepoxide. Helvetica Chimica Acta 71(1): 31-32.

Bacusmo, J. L., W. W. Collins, et al. (1988). Comparison of methods of determining stability and adaptation of sweet potato. Theoretical And Applied Genetics 75(3): 492-497.

Bacusmo, J. L., W. W. Collins, et al. (1988). Effects of fertilization on stability of yield and yield components of sweet potato clones. Journal Of The American Society For Horticultural Science 113(2): 261-264.

Bhagsari, A. S. (1988). Photosynthesis and stomatal conductance of selected root crops as related to leaf age. Crop Science 28(6): 902-906.

Bhattacharya, N. C., P. P. Ghosh, et al. (1988). Effects of abscisic acid on rooting stem cuttings of sweet potato in open top chambers under enriched carbon dioxide environment. Biologia Plantarum 30(3): 204-209.

Bhattacharya, S., J. F. Eatman, et al. (1988). Carbon dioxide enrichment and its relationship to bioconversion of cellulosic biomass of sweet potato (Ipomoea batatas L.) into fermentable sugars. Biomass 15(4): 259-268.

Campbell, T. M. and W. W. Collins (1988). Effects of Fusarium solani root rot and presprouting treatments on Jewel sweet-potato plant production. Canadian Journal Of Plant Pathology 10(3): 240-245.

Cao, S. J., S. S. Chen, et al. (1988). Rapid post-illumination oxygen consumption and its relation to photorespiration. Acta Phytophysiologica Sinica 14(4): 313-317.

Chee, R. P. and D. J. Cantliffe (1988). Selective enhancement of Ipomoea batatas Poir. embryogenic and non-embryogenic callus growth and production of embryos in liquid culture. Plant Cell Tissue And Organ Culture 15(2): 149-160.

Du, P. C. P. and D. B. A. A. Van (1988). Effect of growth period and spacing on the yield of two sweet potato (Ipomoea batatas (L.) Lam) cultivars. Applied Plant Science 2(1): 31-34.

Eilers, R. J., J. G. Sullivan, et al. (1988). Analyzing the effects of exogenous polyamines and growth regulators on plating efficiency of sweet potato protoplasts using a central composite test design. Plant Cell Reports 7(3): 216-219.

Floyd, C. N. (1988). Control and effect of leaf scab (Elsinoe batatas) in sweet potato. Tropical Agriculture 65(1): 6-8.

Floyd, C. N., R. D. B. Lefroy, et al. (1988). Soil fertility and sweet potato production on volcanic ash soils in the highlands of Papua New Guinea. Field Crops Research 19(1): 1-26.

Gama, M. I. C. S. (1988). Production of virus-free plants of sweet potato by heat therapy and meristem tip culture. Fitopatologia Brasileira 13(3): 283-286.

Hall, M. R. (1988). Plant production from longitudinally halved storage roots of two sweet potato cultivars. Journal Of The American Society For Horticultural Science 113(2): 198-201.

Horton, D. E. (1988). World patterns and trends in sweet potato production. Tropical Agriculture 65(3): 268-270.

Hossain, M. and R. Islam (1988). Studies on cross-compatibility and fruit-setting ability in sweet potato (Ipomoea batatas (L.) Lam.). Bangladesh Journal Of Botany 17(2): 123-126.

Hung, L. L. L. and D. M. Sylvia (1988). Production of vesicular-arbuscular mycorrhizal fungus inoculum in aeroponic culture. Applied And Environmental Microbiology 54(2): 353-357.

Kanua, M. B. and C. N. Floyd (1988). Sweet potato genotype X environment interactions in the highlands of Papua New Guinea. Tropical Agriculture 65(1): 9-15.

Kokubu, T. and M. Sato (1988). Isolation and culture of petiole protoplasts of sweet potato, Ipomoea batatas (L.) Lam. and its related species. Memoirs Of The Faculty Of Agriculture Kagoshima University 24(33): 83-90.

Lardizabal, R. D. and P. G. Thompson (1988). Hydroponic culture, grafting, and growth regulators to increase flowering in sweet potato. Hortscience 23(6 Part 1): 993-995.

Lin, Y. H. (1988). Trypsin inhibitor activities as useful taxonomic traits of sweetpotato varieties. Euphytica 38(1): 39-48.

Lin, Y. H., T. C. Huang, et al. (1988). Quality improvement of sweet-potato (Ipomoea batatas L. Lam.) roots as feed by ensilage. British Journal Of Nutrition 60(1): 173-184.

Lu, S., C. Wu, et al. (1988). Irradiation of sweet potato (Ipomoea batatas (L.) Lam.) with gamma rays from cobalt-60 for black rot resistance. Acta Agronomica Sinica 14(1): 22-27.

Mariscal, A. M. and A. L. Carpena (1988). Genetic variation in a wide gene base population of sweet potato (Ipomoea batatas (L) Lam). Annals Of Tropical Research 10(2): 74-84.

Martin, F. W., N. A. Flores, et al. (1988). Identification of a key environment for determination of yield stability in sweet potato. Tropical Agriculture 65(4): 313-316.

Matsuo, T., H. Mitsuzono, et al. (1988). Variations in the levels of major free cytokinins and free abscisic acid during tuber development of sweet potato. Journal Of Plant Growth Regulation 7(4): 249-258.

Mattana, A. L. and L. A. Foerster (1988). Consumption and utilization of leaves of sweet potato and "bracatinga" by larvae of Spodoptera eridania (Cramer, 1782) (Lepidoptera: Noctuidae). Anais Da Sociedade Entomologica Do Brasil 17(Suppl): 95-106.

Mattana, A. L. and L. A. Foerster (1988). Life cycle and reproduction of Spodoptera eridania (Cramer, 1782) (Lepidoptera: Noctuidae) on a new host, Mimosa scabrella Bentham (Leguminosae). Anais Da Sociedade Entomologica Do Brasil 17(1): 173-184.

Miranda, J. E. C. D., C. D. Cruz, et al. (1988). Path analysis and genetic divergence among cultivars and clones of sweet potato. Revista Brasileira De Genetica 11(4): 881-892.

Mulongoy, K., A. Callens, et al. (1988). Differences in mycorrhizal infection and phosphorus uptake of sweet potato cultivars (Ipomoea batatas L.) during their early growth in three soils. Biology And Fertility Of Soils 7(1): 7-10.

Mwanga, R. O. M. and O. B. Zamora (1988). Response of sweet potato (Ipomoea batatas (L.) Lam) to varying levels of shade: I. Yield and yield components. Philippine Journal Of Crop Science 13(3): 133-140.

Nakatani, M. and M. Komeichi (1988). Holding of cut-sprouts in sweet potato (Ipomoea batatas Lam.): IV. Effect of holding on rooting under low soil temperature or moisture. Japanese Journal Of Crop Science 57(3): 464-469.

Nakatani, M., M. Komeichi, et al. (1988). Tuber sink potential in sweet potato (Ipomoea batatas Lam.): II. Estimation of tuber sink potential of cultivars using single leaf grafts. Japanese Journal Of Crop Science 57(3): 544-552.

Nakatani, M., A. Oyanagi, et al. (1988). Holding of cut-sprouts in sweet potato (Ipomoea batatas Lam.): III. Effects of holding on the field establishment, formation and yield of tubers. Japanese Journal Of Crop Science 57(1): 83-89.

Nakatani, M., A. Oyanagi, et al. (1988). Tuber sink potential in sweet potato (Ipomoea batatas Lam.): I. Development of tuber sink potential influencing the source activity. Japanese Journal Of Crop Science 57(3): 535-543.

Nasayao, L. Z. and F. A. Saladaga (1988). Genotype x environment interaction for yield in sweet-potato (Ipomoea batatas L.). Philippine Journal Of Crop Science 13(2): 99-104.

Nelson, R. and S. H. Mantell (1988). Growth performance of micropropagated plantlets of sweet potato (Ipomoea batatas (L.) Lam.) established in a nutrient film technique system. Crop Research 28(2): 145-156.

Nottingham, S. F., K. C. Son, et al. (1988). Feeding by adult sweet potato weevils, Cylas formicarius elegantulus, on sweet potato leaves. Entomologia Experimentalis Et Applicata 48(2): 157-164.

Sajjapongse, A., M. H. Wu, et al. (1988). Effect of planting date on growth and yield of sweet potatoes. Hortscience 23(4): 698-699.

Sangalang, J. B. and J. C. Bouwkamp (1988). Selection of sweet potato for tolerance to aluminum toxicity: Screening procedures and field test. Journal Of The American Society For Horticultural Science 113(2): 277-281.

Scriven, F. M., G. T. Ndunguru, et al. (1988). Hot water dips for the control of pathological decay in sweet potatoes. Scientia Horticulturae 35(1-2): 1-6.

Siddique, M. A., M. G. Rabbani, et al. (1988). Effects of plant spacing and number of vines planted per hill on the yield of sweet potato (Ipomoea batatas Poir.). Bangladesh Journal Of Agriculture 13(1): 1-10.

Sirju, C. G. and L. D. Wickham (1988). The development of alternative storage sink sites in sweet potato Ipomoea batatas. Annals Of Botany 61(1): 99-102.

Therrien, P. (1988). Individual food choices by foragers from the species Acromyrmex octospinosus (Reich), the leaf-cutting ant. Memoirs Of The Entomological Society Of Canada(146): 123-130.

Van, D. P. F., S. U. Purnomo, et al. (1988). Trans-cis isomerization of carotenes and its effect on the vitamin A potency of some common Indonesian foods. Nutrition Reports International 37(4): 785-794.

Villamayor, F. G. J. and R. D. Perez (1988). Effect of time and frequency of topping on storage root and cutting production of a bushy sweet potato cultivar. Annals Of Tropical Research 10(1): 26-36.

Wu, Y. V. (1988). Characterization of sweet potato stillage and recovery of stillage solubles by ultrafiltration and reverse osmosis. Journal Of Agricultural And Food Chemistry 36(2): 252-256.

Xue, Q., S. Shi, et al. (1988). Analysis of peroxidase isozyme in Ipomoea spp. Acta Genetica Sinica 15(4): 247-253.

Acock, M. C. and J. O. J. Garner (1987). Activity of cell-wall-bound invertase during storage root initiation in the sweet potato. Hortscience 22(4): 586-588.

Alvarenga, J. C., J. L. Donzele, et al. (1987). Energy and protein balance of alternative feedstuffs for swine. Revista Da Sociedade Brasileira De Zootecnia 16(6): 601-605.

Atkey, P. T. and A. A. Brunt (1987). Electron microscopy of an isometric caulimo-like virus from sweet potato (Ipomoea batatas). Journal Of Phytopathology 118(4): 370-376.

Bhattacharya, S., P. K. Biswas, et al. (1987). Comparison of the effectiveness of various pretreatment methods on the enzymatic hydrolysis of sweet potato (Ipomoea batatas L.) biomass. Biological Wastes 19(3): 215-226.

Bouwkamp, J. C. and R. N. McArdle (1987). Seedling screening techniques to select high-yielding genotypes of sweet potato. Hortscience 22(1): 111-113.

Campbell, T. M. and W. W. Collins (1987). Fusarium solani root rot resistance in sweet potatoes. Journal Of The American Society For Horticultural Science 112(2): 386-389.

Chalfant, R. B., M. Hall, et al. (1987). Insecticidal control of soil insects of sweet potatoes in the Georgia Coastal Plain (USA). Applied Agricultural Research 2(3): 152-157.

Chang, T. C., S. C. Lee, et al. (1987). Sweet potato starch phosphorylase: Purification and characterization. Agricultural And Biological Chemistry 51(1): 187-196.

Ciofu, R., M. E. Ceausescu, et al. (1987). Researches on sweet potatoes as a source of diversifying the assortment of fresh and processed vegetables. Lucrari Stiintifice Institutul Agronomic "Nicolae Balcescu" Horticultura 30: 7-14.

Collins, W. W., L. G. Wilson, et al. (1987). Genotype X environment interactions in sweet potato yield and quality factors. Journal Of The American Society For Horticultural Science 112(3): 579-583.

Crossman, S. M. and W. A. Hill (1987). Inoculation of sweet potato with Azospirillum. Hortscience 22(3): 420-422.

Fujita, M. and T. Kawanishi (1987). Cadmium-binding complexes from the root tissues of various higher plants cultivated in cadmium ion containing medium. Plant And Cell Physiology 28(2): 379-382.

Hall, M. R. (1987). Shoot apex and nodes exposed above-ground influenced growth of sweet potato vine cuttings. Hortscience 22(2): 230-232.

Harper, T. W. and I. R. Walker (1987). Evaluation of varieties, planting date and polyethylene mulch for spring and summer sweet potato production in southeast Queensland (Australia). Queensland Journal Of Agricultural And Animal Sciences 44(1): 9-14.

Harrison, H. F. J., A. Jones, et al. (1987). Heritability of metribuzin tolerance in sweet potatoes (Ipomoea batatas). Weed Science 35(5): 715-719.

Hossain, S. N. and Q. A. Fattah (1987). Effect of potassium naphthenate on the morphology and composition of sweet potato Ipomoea batatas L. Bangladesh Journal Of Botany 16(1): 83-88.

Israelstam, G. F. (1987). Effect of gibberellic acid on the uptake and loss of inorganic phosphate from sweet potato slices. Biologia Plantarum 29(2): 118-122.

Jayanth, K. P. and S. Nagarkatti (1987). Host-specificity of Cyrtobagous salviniae Calder and Sands (Coleoptera: Curculionidae) introduced into India for the control of Salvinia molesta. Entomon 12(1): 1-6.

Jones, A., J. M. Schalk, et al. (1987). Control of soil insect injury by resistance in sweet potato. Journal Of The American Society For Horticultural Science 112(2): 195-197.

Kays, S. J., J. D. Goeschl, et al. (1987). Diurnal changes in fixation, transport, and allocation of carbon in the sweet potato using carbon-11 tracer. Journal Of The American Society For Horticultural Science 112(3): 545-554.

Kumar, R., P. D. Sinha, et al. (1987). Evaluation of systemic and non-systemic fungicides for the control of cercospora leaf spot of sweet potato. Pesticides 21(9): 31-32.

Li, K. P. and Q. T. Zhang (1987). Development of embryo and fruit in Ipomoea batatas Lam. Acta Botanica Sinica 29(1): 34-40.

Lin, Y. H. and B. S. Tsu (1987). Some factors affecting levels of trypsin inhibitor activity of sweet potato (Ipomoea batatas Lam.) roots. Botanical Bulletin Of Academia Sinica 28(2): 139-150.

Maluf, W. R., F. H. Franca, et al. (1987). Screening of sweet potato accessions for resistance to Tetranychus spp. mites. Revista Brasileira De Genetica 10(3): 603-610.

Monteagudo, T. S., R. M. Machado, et al. (1987). A new host of Pachnaeus litus Germar (Coleoptera: Curculionidae). Centro Agricola 14(4): 57-60.

Morrow, R. C. and T. W. Tibbitts (1987). Induction of intumescence injury on leaf disks. Journal Of The American Society For Horticultural Science 112(2): 304-306.

Murata, T., K. Hoshino, et al. (1987). Callus formation and plant regeneration from petiole protoplast of sweet potato, Ipomoea batatas (L.) Lam. Japanese Journal Of Breeding 37(3): 291-298.

Nakatani, M., A. Oyanagi, et al. (1987). Holding of cut-sprouts in sweet potato (Ipomoea batatas Lam.): I. Effects of holding on rooting of cut-sprouts. Japanese Journal Of Crop Science 56(2): 238-243.

Nakatani, M., A. Oyanagi, et al. (1987). Holding of cut-sprouts in sweet potato (Ipomoea batatas Lam.): II. Physiological changes in cut-sprouts during the holding period. Japanese Journal Of Crop Science 56(2): 244-251.

Nottingham, S. F., D. D. Wilson, et al. (1987). Feeding and oviposition preferences of the sweet potato weevil, Cylas formicarius elegantulus, on the outer periderm and exposed inner core of storage roots of selected sweet potato cultivars. Entomologia Experimentalis Et Applicata 45(3): 271-276.

Nozue, M., J. Kawai, et al. (1987). Selection of a high anthocyanin-producing cell line of sweet potato cell cultures and identification of pigments. Journal Of Plant Physiology 129(1-2): 81-88.

Ochoa, A. N. and G. F. Lopez (1987). Effect of light and sodium chloride salinity on the growth of callus cultures of Ipomoea pes caprae (L.) R. Brown and Ipomoea batatas (L.) Lam. Annals Of Botany 59(5): 495-498.

Otani, M., T. Shimada, et al. (1987). Mesophyll protoplast culture of sweet-potato (Ipomoea batatas L.). Plant Science 53(2): 157-160.

Oyanagi, A., M. Nakatani, et al. (1987). Studies on the factors inducing cracking in tuberous roots of sweet potatoes (Ipomoea batatas Lam.). Japanese Journal Of Crop Science 56(2): 190-197.

Pandey, R. K., R. A. Morris, et al. (1987). Water extraction patterns, water use and yield of ten upland crops following rainfed lowland rice in the tropics. Philippine Journal Of Crop Science 12(3): 163-168.

Picha, D. H. (1987). Chilling injury, respiration, and sugar changes in sweet potatoes stored at low temperature. Journal Of The American Society For Horticultural Science 112(3): 497-502.

Picha, D. H. (1987). Carbohydrate changes in sweet potatoes during curing and storage. Journal Of The American Society For Horticultural Science 112(1): 89-92.

Randle, W. M. (1987). Fleshy root growth and development and localized dry weight changes of four sweet potato cultivars. Tropical Agriculture 64(4): 333-339.

Roy, F. and M. V. Hegde (1987). Immobilization of beta-amylase on polystyrene cation exchange resin equilibrated with aluminum ions (IR-120 aluminum). Enzyme And Microbial Technology 9(9): 550-552.

Sakajo, S., K. Nakamura, et al. (1987). Increase in catalase messenger RNA in wounded sweet potato tuberous root tissue. Plant And Cell Physiology 28(5): 919-924.

Shiotani, I. and T. Kawase (1987). Synthetic hexaploids derived from wild species related to sweet potato. Japanese Journal Of Breeding 37(4): 367-376.

Sihachakr, D. and G. Ducreux (1987). Plant regeneration from protoplast culture of sweet potato (Ipomoea batatas Lam.). Plant Cell Reports 6(5): 326-328.

Sihachakr, D. and G. Ducreux (1987). Isolation and culture of protoplasts from petioles and stems of 2 varieties of the sweet potato (Ipomoea batatas). Canadian Journal Of Botany 65(1): 192-197.

Singh, B., S. S. Yazdani, et al. (1987). Sources of resistance to Cylas formicarius Fab. in sweet potato: 1. Morphological characters. Indian Journal Of Entomology 49(3): 414-419.

Song, E., M. S. Shin, et al. (1987). Physicochemical properties of sweet potato (Ipomoea batatas) starch by heat-moisture treatment. Journal Of The Korean Agricultural Chemical Society 30(3): 242-249.

Walker, D. W. and W. R. Woodson (1987). Nitrogen rate and cultivar effects on nitrogen and nitrate concentration of sweet potato leaf tissue. Communications In Soil Science And Plant Analysis 18(5): 529-542.

Bhagsari, A. S. and R. H. Brown (1986). Leaf photosynthesis and its correlation with leaf area. Crop Science 26(1): 127-132.

Bradbury, J. H. and U. Singh (1986). Ascorbic acid and dehydroascorbic acid content of tropical root crops from the South Pacific. Journal Of Food Science 51(4): 975-978.

Chang, T. C. and J. C. Su (1986). Starch phosphorylase inhibitor from sweet potato (Ipomoea batatas cultivar Tainon 65). Plant Physiology 80(2): 534-538.

Clark, C. A., W. M. Randle, et al. (1986). Reactions of sweet potato (Ipomoea batatas) selections to Fusarium root and stem canker caused by Fusarium solani. Plant Disease 70(9): 869-871.

De, P. R. J., C. Lightfoot, et al. (1986). Screening of sweet potato varieties by subsistence farmers in Basey, Samar, Philippines: A case of traditional experimentation in upland agriculture. Annals Of Tropical Research 8(4): 201-207.

D'Souza, E. and R. M. Bourke (1986). Intensification of subsistence agriculture on the Nembi Plateau, Papua New Guinea: 1. General introduction and inorganic fertilizer trials. Papua New Guinea Journal Of Agriculture Forestry And Fisheries 34(1-4): 19-28.

D'Souza, E. and R. M. Bourke (1986). Intensification of subsistence agriculture on the Nembi Plateau, Papua New Guinea: 2. Organic fertilizer trials. Papua New Guinea Journal Of Agriculture Forestry And Fisheries 34(1-4): 29-40.

D'Souza, E., R. M. Bourke, et al. (1986). Intensification of subsistence agriculture on the Nembi Plateau, Papua New Guinea: 3. Sweet potato cultivar trials; crop rotation trials; and crop introductions. Papua New Guinea Journal Of Agriculture Forestry And Fisheries 34(1-4): 41-48.

Duatin, C. J. Y. and P. L. B. De (1986). Biology and host range of the taro planthopper, Tarophagus proserpina. Annals Of Tropical Research 8(2): 72-80.

Goodbody, S. and G. S. Humphreys (1986). Soil chemical status and the prediction of sweet potato (Ipomoea batatas) yields. Tropical Agriculture 63(3): 209-211.

Hall, M. R. (1986). Presprouting, root size, and cutting related to plant production by bedded sweet potato (Ipomoea batatas cultivar Georgia Jet) roots. Hortscience 21(4): 985-987.

Hall, M. R. (1986). Length, nodes underground, and orientation of transplants in relation to yields of sweet potato (Ipomoea batatas cultivar Red Jewel). Hortscience 21(1): 88-89.

Harrison, H. F. J. and J. K. Peterson (1986). Allelopathic effects of sweet potatoes (Ipomoea batatas) on yellow nutsedge (Cyperus esculentus) and alfalfa (Medicago sativa). Weed Science 34(4): 623-627.

Huang, S. P., J. E. C. Miranda, et al. (1986). Resistance to root-knot nematodes in a Brazilian sweet-potato collection. Fitopatologia Brasileira 11(4): 761-767.

Lawrence, G. W. and C. A. Clark (1986). Infection and morphological development of Meloidogyne incognita in roots of susceptible and resistant sweet potato (Ipomoea batatas) cultivars. Plant Disease 70(6): 545-547.

Lin, Y. H. and S. P. Ho (1986). Soluble leaf proteins of sweet potato (Ipomoea batatas) cultivars. Botanical Bulletin Of Academia Sinica 27(2): 175-186.

Lu, J. Y., P. K. Biswas, et al. (1986). Effect of elevated carbon dioxide growth conditions on the nutritive composition and acceptability of baked sweet potatoes (Ipomoea batatas). Journal Of Food Science 51(2): 358-359.

Magnuson, C. E., J. D. Goeschl, et al. (1986). Experimental tests of the Muench-Horwitz theory of phloem transport: Effects of loading rates. Plant Cell And Environment 9(2): 103-110.

Martin, F. W. (1986). Relation to glasshouse-imposed stress tests to field yields in sweet potato (Ipomoea batatas). Tropical Agriculture 63(3): 205-208.

McArdle, R. N. and J. C. Bouwkamp (1986). Effect of pectinase, cellulase and nutrient addition on fermentation of sweet potato mashes. Annals Of Tropical Research 8(3): 107-114.

McArdle, R. N. and J. C. Bouwkamp (1986). Use of heat treatments for saccharification of sweet potato (Ipomoea batatas) mashes. Journal Of Food Science 51(2): 364-366.

Monro, J. A., W. D. Holloway, et al. (1986). Elemental analysis of fruit and vegetables from Tonga. Journal Of Food Science 51(2): 522-523.

Moyer, J. W. and E. Echandi (1986). Serological detection and identification of Streptomyces ipomoea. Plant Disease 70(6): 516-518.

Murakami, S., T. Hattori, et al. (1986). Structural differences in full-length complementary DNA species for two classes of sporamin, the major soluble protein of sweet potato (Ipomoea batatas) tuberous roots. Plant Molecular Biology 7(5): 343-356.

Murata, T. (1986). Anatomical observation on gametogenesis in sweet potato, Ipomoea batatas. Proceedings Of Faculty Of Agriculture Kyushu Tokai University 5: 23-32.

Nakatani, M., A. Oyanagi, et al. (1986). Effects of soil temperatures on the rooting of cut-sprouts of sweet potato (Ipomoea batatas): I. Optimum soil temperature for rooting and effects or high soil temperatures on the physiological and anatomical characteristics of roots. Japanese Journal Of Crop Science 55(2): 208-216.

Okada, K. and A. Kumura (1986). Uptake of organic matter by the roots of sweet potato (Ipomoea batatas): Analysis of the delta carbon-14 value of plants. Plant And Soil 91(2): 209-220.

Osuji, G. O. and R. L. Ory (1986). Purine degradative pathway of the yam (Dioscorea spp.) and sweet potato (Ipomoea batatas). Journal Of Agricultural And Food Chemistry 34(4): 599-602.

Picha, D. H. (1986). Weight loss in sweet potatoes (Ipomoea batatas) during curing and storage: Contribution of transpiration and respiration. Journal Of The American Society For Horticultural Science 111(6): 889-892.

Picha, D. H. (1986). Sugar content of baked sweet potatoes (Ipomoea batatas) from different cultivars and lengths of storage. Journal Of Food Science 51(3): 845-846.

Picha, D. H. (1986). Influence of storage duration and temperature on sweet potato (Ipomoea batatas) sugar content and chip color. Journal Of Food Science 51(1): 239-240.

Raison, J. K. and G. R. Orr (1986). Phase transitions in liposomes formed from the polar lipids of mitochondria from chilling-sensitive plants. Plant Physiology 81(3): 807-811.

Schalk, J. M., J. K. Peterson, et al. (1986). The anatomy of sweet potato periderm and its relationship to wireworm, Diabrotica, Systena resistance. Journal Of Agricultural Entomology 3(4): 350-356.

Szyperski, R. J., D. D. Hamann, et al. (1986). Controlled alpha amylase process for improved sweet potato (Ipomoea batatas) puree. Journal Of Food Science 51(2): 360-363.

Templeton, S. K. M. and W. W. Collins (1986). Field performance and clonal variability in sweet potatoes (Ipomoea batatas cultivar Jewel) propagated in vitro. Journal Of The American Society For Horticultural Science 111(5): 689-694.

Templeton, S. K. M. and W. W. Collins (1986). Heritability of regeneration in tissue cultures of sweet potato (Ipomoea batatas). Theoretical And Applied Genetics 71(6): 835-841.

Van, D. T., C. J. Biermann, et al. (1986). Simple sugars, oligosaccharides, and starch concentrations in raw and cooked sweet potato (Ipomoea batatas). Journal Of Agricultural And Food Chemistry 34(3): 421-425.

Villegas, R. J. A. and M. Kojima (1986). Purification and characterization of hydroxycinnamoyl D glucose:quinate hydroxycinnamoyl transferase in the root of sweet potato, Ipomoea batatas. Journal Of Biological Chemistry 261(19): 8729-8733.

Walker, D. W. and D. D. Jenkins (1986). Influence of sweet potato (Ipomoea batatas) plant residue on growth of sweet potato vine cuttings and cowpea (Vigna unguiculata Brown Crowder) plants. Hortscience 21(3 Sect. 1): 426-428.

Yang, S. S. and W. F. Chiu (1986). Protease production with sweet potato residue by solid state fermentation. Chinese Journal Of Microbiology And Immunology 19(4): 276-288.

Yoshida, T. (1986). Inbreeding coefficient and yield in sweet potato (Ipomoea batatas (L.) Lam.). Japanese Journal Of Breeding 36(4): 409-415.

Aiazzi, M. T., R. W. Racca, et al. (1985). The effect of some regulators (2-chloroethyltrimethylammonium chloride, gibberellic acid, and naphthaleneacetic acid) on tuberization in Ipomoea batatas cultivar Criolla Amarilla, according to the time and form of application. Phyton 45(2): 115-121.

Arinze, A. E. (1985). The action of polygalacturonase and cellulase enzymes of Botryodiplodia theobromae on yam (Dioscorea spp.) and sweet potato (Ipomoea batatas) tissues. Phytopathologische Zeitschrift 114(3): 234-242.

Balasubramanian, G., S. Chelliah, et al. (1985). Consumption of food and its utilization by Spodoptera litura fed on 8 different host plants. Indian Journal Of Agricultural Sciences 55(3): 193-200.

Bhattacharya, N. C., P. K. Biswas, et al. (1985). Growth and yield response of sweet potato (Ipomoea batatas) to atmospheric carbon dioxide enrichment. Crop Science 25(6): 975-981.

Bourke, R. M. (1985). Influence of nitrogen and potassium fertilizer on growth of sweet potato (Ipomoea batatas) in Papua New Guinea. Field Crops Research 12(4): 363-376.

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