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*Daisuke Hoshino
Japan International Research Center for Agricultural Sciences
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Tomonori Kaneko
Akita Prefecture Agriculture, Forestry and Fisheries Research Center
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Hiroki Tamura
Akita Prefecture Agriculture, Forestry and Fisheries Research Center
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Koichi Watanabe
Yamagata Prefectural Forest Research and Instruction Center
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Minoru Okada
Senshu University, Hokkaido College
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Mitsuhiro Hayashida
Yamagata University, Faculty of Agriculture
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Tomoki Sakamoto
Forestry and Forest Products Research Institute