1. Dep. of Biological Production; Faculty of Bioresource Sciences; Akita Prefectural Univ.; Kaidoubata-Nishi 241-438, Shimoshinjo-Nakano Akita 010-0195 Japan
2. Univ. of Tsukuba; Tennoudai 1-1-1 Tsukuba Ibaraki 305-8577 Japan
3. Plant Genome Mapping Laboratory; Univ. of Georgia; 111 Riverbend Road Athens GA 30602
4. Graduate School of Agricultural and Life Sciences; Univ. of Tokyo; Yayoi 1-1-1, Bunkyo-ku Tokyo 113-8657 Japan
5. EARTHNOTE Co., Ltd.; Isagawa 498-1-403 Nago 905-1152 Japan
6. Akita Agricultural Experiment Station; Genpachizawa 34-1, Aikawa, Yuwa Akita 010-1231 Japan