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*Kei Naito
Kyushu University School of Agriculture
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Kazuki Sakamoto
Kyushu University Graduate School of Bioresource and Bioenvironmental Sciences
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Susumu Shiraishi
Kyushu University Faculty of Agriculture
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Yoshinori Sasaki
Oita Prefectural Forest Experiment Station
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Masanori Okamoto
Forest Tree Breeding Center