1. National Agricultural Research Center for Hokkaido region (NARCH), National Agriculture and Food Research Organization (NARO)
2. Institute of the Society for Techno-Innovation of Agriculture, Forestry and Fisheries
3. National Institute of Crop Science (NICS), National Agriculture and Food Research Organization (NARO)
4. Present address: Secretariat of Agriculture, Forestry and Fisheries Research Council, Ministry of Agriculture, Forestry and Fisheries of Japan