関東東山病害虫研究会報
Online ISSN : 1884-2879
Print ISSN : 1347-1899
ISSN-L : 1347-1899
病害の部
茨城県内で収集されたレタスべと病菌に対するレタスの品種抵抗性
山内 智史佐藤 文生白川 隆
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2013 年 2013 巻 60 号 p. 53-54

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True leaves of young lettuce plants (3 to 4 weeks old) were more susceptible than their cotyledons to isolates of Bremia lactucae (BL) collected from Ibaraki Prefecture. In the three commercial cultivars described as resistant ones in the seed company catalogs, cv. Haru P was consistently resistant to three isolates of BL, however, the other two showed susceptible reaction and rich conidial formation was observed on the inoculated true leaves of young lettuce plants.

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© 2013 関東東山病害虫研究会
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