1. Toyama Prefectural Agricultural; Forestry and Fisheries Research Center; Horticultural Research Institute; Tonami Toyama 939-1327 Japan
2. Kagawa Prefecture Agricultural Experiment Station; Ayagawa Ayauta Kagawa 761-2306 Japan
3. Hyogo Prefectural Technology Center for Agriculture; Forestry and Fisheries; Kasai Hyogo 679-0198 Japan
4. Toyama Prefectural Agricultural; Forestry and Fisheries Research Center; Agricultural Research Institute; Toyama Toyama 939-8153 Japan