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*Takayoshi koike
Researc Faculty of Agriculture, Hokkaido University
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Qiaozhi Mao
Graduate School of Agriculture, Hokkaido University
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Naoki Inada
Graduate School of Agriculture, Hokkaido University
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Korin kawaguchi
Graduate School of Agriculture, Hokkaido University
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Yasutomo Hoshika
Researc Faculty of Agriculture, Hokkaido University
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Kazuhito Kita
Hokkaido Research Organization, Forestry Research Institute
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Makoto Watanabe
Researc Faculty of Agriculture, Hokkaido University