@INBOOK {SHIWACHI:2001a, title = {Effect of day length on the enlargement and maturation of tubers in yams (Dioscorea spp.)}, author = {Shiwachi, H. and Ayankanmi, T. and Asiedu, R. }, year = {2001}, volume = {44}, type = {Book of Abstracts of the Eighty ninth conference of the Japanese Society for Tropical Agriculture, Tokyo, Japan}, pages = {33--34}, note = {RTB; Root and Tuber; Yam}, }