〇Haruki Takahashi1, Ryutaro Morita2, Satoko Miura1, Naoko Crofts1, Naohiro Aoki2, Hiroshi Fukayama3, Naoko Fujita1
(1. Facult. Biores. Sci., Akita Pref. Univ., 2. Lab. Crop. Sci., Gradu. Sch. Agric. Life Sci., Univ Tokyo, 3. Lab. Trop. Crop Sci., Gradu. Sch. Agric. Sci., Kobe Univ)