1. National Institute of Agrobiological Resources
Tsukuba, Ibaraki, 305 Japan
2. Miyagi Prefectural Agricultural Research Center
Natori, Miyagi, 981-12 Japan
3. Ibaraki Horticultural Research Station
Iwama, Ibaraki, 311-32 Japan
4. Kagoshima Biotechnology Institute
Kushira, Kagoshima, 893-16 Japan
5. Tohoku National Agricultural Experimental Station
Omagari, Akita, 014-01 Japan
6. Osaka Prefectural Agricultural and Forestry Research Center
Habikino, Osaka, 583 Japan
7. National Agriculture Research Center
Tsukuba, Ibaraki, 305 Japan
8. Aomori Green BioCenter
Aomori, 030-01 Japan