Institution: | (1) Department of Forestry & Landscape Architecture, Hokkaido College, Senshu University, Bibai 079-0197, Japan;(2) Faculty of Horticulture, Chiba University, Matsudo 648, Chiba 271-8510, Japan;(3) Research Section, Hokkai Sankyo Co., Ltd., Kitanosato, Kitahiroshima 061-1111, Japan |