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Akihiko GOTO
Okitsu Branch, Fruit Tree Research Station, Ministry of Agriculture, Forestry and Fisheries
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Hisakazu YAMANE
Department of Agricultural Chemistry, The University of Tokyo.
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Nobutaka TAKAHASHI
Department of Agricultural Chemistry, The University of Tokyo.
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Kazuyoshi HIROSE
Okitsu Branch, Fruit Tree Research Station, Ministry of Agriculture, Forestry and Fisheries