1. Kansai Regional Breeding Office, Forest Tree Breeding Center Forestry and Forest Products Research Institute Okayama Japan
2. Kyushu Regional Breeding Office, Forest Tree Breeding Center Forestry and Forest Products Research Institute Kumamoto Japan
3. Tohoku Regional Breeding Office, Forest Tree Breeding Center Forestry and Forest Products Research Institute Iwate Japan
4. Breeding Department, Forest Tree Breeding Center Forestry and Forest Products Research Institute Ibaraki Japan
5. Genetic Resources Department, Forest Tree Breeding Center Forestry and Forest Products Research Institute Ibaraki Japan
6. Department of Forest Environmental Science, Faculty of Agriculture Kyushu University Fukuoka Japan