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Kei ARAI
Faculty of Agriculture, The University of Kagoshima
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Izumi MATSUDA
Faculty of Agriculture, The University of Tokyo
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Hiroki KOGANEZAWA
Morioka Branch, Horticultural Station
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Seiichi OKUDA
Faculty of Agriculture, The University of Tokyo
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Yoji DOI
Faculty of Agriculture, The University of Tokyo
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Kiyoshi YORA
Faculty of Agriculture, The University of Tokyo