Distribution of Typhula ishikariensis Biotype A lsolates Belonging to a Predominant Mycelial Compatibility Group
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概要
- 論文の詳細を見る
The distribution pattern and frequency of isolates of a snow mold fungus, Typhula ishikariensis biotype A belonging to a predominant MCG(mycelial compatibilty grop, referred to sa super MCG), were surveyed throughout its habitat from northern Honshu to esatern Hokkaido. About 38 and 14% of isolates examined belonged to super MCG in eastern and central Hokkaido, respectively;however super MCG was never found in southern Hokkaido or northen Honshu. These findings imply that T.ishikariensis biotype A consists of two populations in Japan, i.e., one that is distributed in Honshu and southern Hokkaido and lacks super MCG isolates, and the other that includes super MCG isolates and exists in central and eastern Hokkaido. The differnce in distribution pattern of the two populations is discussed in terms of geological history during the Pleistocene(2 million to 10 thousand years ago). The tendency of global warming, which alleviates freezing damage, was considered to be responsible for the outbreak of this fungus in eastern Hokkaido.
- 日本植物病理学会の論文
- 2000-05-25
著者
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Kawakami Akira
Hokkaido National Agricultural Experiment Station
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Kawakami Akira
Hokkaido National Agricultural Exp. Stn.
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Matsumoto Naoyuki
National Institute For Agro-environmental Sciences
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IZUTSU Satoshi
National Research Institute of Vegetables, Ornamental Plants and Tea
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Izutsu Satoshi
National Research Institute Of Vegetables Ornamental Plants And Tea
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