Alvarenga, A.A., Valio, I.F.M.: Influence of temperature and photoperiod on flowering and tuberous root formation of Pachyrhizus tuberosus.-Ann. Bot. 64: 411–414, 1989.
Google Scholar
Bergmeyer, H.U., Bernt, E., Schmidt, F., Stork, H.: D-glucose: determination with hexokinase and glucose 6-phosphate dehydrogenase.-In: Bergmeyer, H.U. (ed.): Methods of Enzymatic Analysis. Pp. 1196–1201. Verlag-Chemie/Academic Press, New York and London 1974.
Google Scholar
Chapman, T.: Some investigations into factors limiting yields of the white Lisbon yam (Dioscorea alata L.) under Trinidad conditions.-Trop. Agr. 42: 145–151, 1965.
Google Scholar
Enyi, B.A.C.: The effects of seed size and spacing on growth and yield of lesser yam Dioscorea esculenta.-J. agr. Sci. 78: 215–225, 1972.
Google Scholar
Ewing, E.E., Wareing, P.F.: Shoot, stolon, and tuber formation of potato (Solanum tuberosum L.) cuttings in response to photoperiod.-Plant Physiol. 61: 348–353, 1978.
Google Scholar
Ferguson, T.U., Haynes, P.H., Spence, J.A.: Distribution of dry matter and mineral nutrients in tuber of two cultivars of Dioscorea alata L.-Trop. Agr. 57: 61–67, 1980.
Google Scholar
Hayashi, M., Ishihata, K.: Studies on the development and the thickening growth of yam (Dioscorea spp.) tubers. 2. Effects of photoperiod and temperature on growth and enlargement of tubers.-Jap. J. trop. Agr. 35(2): 79–83, 1991.
Google Scholar
Lacointe, A., Zinsou, C.: Effets de la date de plantation sur la croissance et le developpement de plantules d’igname (Dioscorea alata L.) produites par culture in vitro.-Agronomie 7: 475–481, 1987.
Google Scholar
Lian, M.L., Chakrabarty, D., Paek, K.Y.: Bublet formation from bulbscale segments of Lilium using bioreactor system.-Biol. Plant. 46: 199–203, 2003.
Article
Google Scholar
Mantell, S.H., Hugo, S.A.: Effects of photoperiod, mineral medium strength, inorganic ammonium, sucrose and cytokinin on root, shoot and microtuber development in shoot cultures of Dioscorea alata L. and D. bulbifera L. yams.-Plant Cell Tissue Organ Cult. 16: 23–37, 1989.
Google Scholar
Mead, R., Curnow, R.N.: Statistical Methods in Agriculture and Experimental Biology.-Chapman and Hall, London 1983.
Google Scholar
Murashige, T., Skoog, F.: A revised medium for rapid growth and bioassays with tobacco tissue culture.-Physiol. Plant. 15: 473–479, 1962.
Google Scholar
Okubo, H., Masunaga, T., Yamashita, H., Uemoto, S.: Effects of photoperiod and temperature on tuberous root formation in winged bean (Psophocarpus tetragonolobus).-Sci. Hort. 49: 1–8, 1992.
Article
Google Scholar
Onwuene, I.C.: Sett weight effects on time of tuber formation, and on tuber yield characteristics, in water yam (Dioscorea alata L.).-J. agr. Sci. 91: 317–319, 1978.
Google Scholar
Orkwor, G.C., Ekanayake, I.J.: Food yams.-In: Orkwor, G.C. Asiedu, R., Ekanayake, I.J. (ed.): Advances in Research. Pp. 39–62, IITA/NRCRI, Nigeria 1998.
Google Scholar
Rodriguez, W.: Crop Physiology of the Greater Yam (Dioscorea alata L.).-Verlag Ulrich E. Grauer, Stuttgart 1997.
Google Scholar
Shiwachi, H., Ayankanmi, T., Asiedu, R.: Effect of day length on the development of tubers in yams (Dioscorea spp.). Trop. Sci. 42: 162–170, 2002.
Google Scholar
Sladky, Z., Bartosova, L.: In vitro induction of axillary potato microtubers and improvement of their quality.-Biol. Plant. 32: 181–188, 1990.
Google Scholar
Snyder, R.G., Ewing, E.E.: Interactive effects of temperature, photoperiod, and cultivar on tuberization of potato cuttings.-HortScience 24: 336–338, 1989.
Google Scholar
Struik, P.C., Van Heusden, E., Burger-Meijer, K.: Effects of short periods of long days on the development, yield and size distribution of potato tubers.-Neth. J. agr. Sci. 36: 11–22, 1988.
Google Scholar
Vaillant, V., Desfontaines, L.: Assimilate partitioning in Pachyrhizus erosus tubers under short days.-Physiol. Plant. 93: 558–562, 1995.
Article
Google Scholar
Yoshida, Y., Kanahama, K.: Effects of photoperiod and temperature on the development of spikes and new tubers in Chinese yam (Dioscorea opposita Thunb. cv. Ichoimo).-J. jap. Soc. hort. Sci. 68: 124–129, 1999.
Google Scholar