1. Institute of Fruit Tree and Tea Science, NARO
2. Grape and Persimmon Research Station, Institute of Fruit Tree and Tea Science, NARO
3. Fukuoka Agricultural and Forestry Research Center
4. Yamanashi Fruit Tree Experiment Station
5. Iwate Agricultural Research Center
6. Sand Dune Agricultural Research Center, Ishikawa Agriculture and Forestry Research Center
7. Fruit Tree Research Center, Ehime Research Institute of Agriculture, Forestry and Fisheries
8. Kagoshima Prefectural Institute for Agricultural Development