1. Institute of Vegetable and Floriculture Science, NARO, Tsukuba, Japan
2. Tohoku Agricultural Research Center, NARO, Morioka, Japan
3. Kyushu Okinawa Agricultural Research Center, NARO, Miyakonojyo, Japan
4. Iwate Agricultural Research Center, Kitakami, Japan
5. Fukushima Agricultural Technology Centre, Coastal Regional Research Sector, Souma, Japan
6. Sakaki Town Agricultural Association for Tomorrow, Sakaki, Nagano, Japan
7. Nagano Vegetable and Ornamental Crops Experiment Station, Shiojiri, Japan
8. Pioneer Ecoscience Co., Ltd., Utsunomiya, Japan
9. Food Research Institute, NARO, Tsukuba, Japan
10. Kyushu Okinawa Agricultural Research Center, NARO, Kurume, Japan
11. Okinawa Prefectural Agricultural Research Center, Itoman, Japan
12. Kagawa Prefectural Agricultural Experiment Station, Ayakawa, Kagawa, Japan