한국식물병리학회지 (Korean Journal Plant Pathology)
- 제10권2호
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- Pages.92-98
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- 1994
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- 0256-8608(pISSN)
우라나라 감자 역병균 A2 교배형 및 Metalaxyl 저항성균의 빈도 및 분포의 변화
Changes in Frequencies and Distribution of A2 Mating Type and Metalaxyl-Resistant Isolates of Phytophthora infestans in Korea
초록
Phytophthora infestans populations collected from various geographical locations of Korea in 1991 and 1993 were analyzed for mating types and responses to metalaxyl. Both A1 and A2 mating type isolates were detected in 1991. The majority of the isolates were A2 mating type, but no A1 mating type was detected in 1993. About 40% of the isolates collected in 1991 were resistant to metalaxyl, and the distribution of metalaxyl-resistant isolates of P. infestans was strongly associated with their geographic origins in Korea. Metalaxyl-resistant isolates with EC50 values > 50