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*Masahiro SUZUKI
Graduate School of Agriculture,Hokkaido University
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Hideyuki SAITO
Graduate School of Agriculture,Hokkaido University
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Hayato IIJIMA
Graduate School of Agriculture,Hokkaido University
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Takashi ONOE
Graduate School of Agriculture,Hokkaido University
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Trofim MAXIMOV
Institute of Biological Problems of Cryolithozne, Russian Academy of Science
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Kunihide TAKAHASHI
Graduate School of Agriculture,Hokkaido University