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*Mari Tagawa
School of Agriculture, Kyushu University
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Kazuki Sakamoto
Gratuate school of Bioresouce and Bioenviromental sciences ,Kyushu University
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Susumu Shiraisi
Faculty of Agriculture, Kyushu University
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Kazuhito Kita
Hokkaido Forestry Research Institute
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Makoto Kuromaru
Hokkaido Forestry Research Institute