1. Lab. of Biometry and BioinformaticsGraduate School of Agricultural and Life SciencesThe Univ. of Tokyo1‐1‐1 YayoiBunkyoTokyo113‐8657Japan
2. Lab. of Plant BreedingGraduate School of Life and Environmental SciencesUniv. of Tsukuba1‐1‐1 TennoudaiTsukubaIbaraki305‐8572Japan