天津市茄子灰霉病菌的抗药性检测

Identification on Resistance to Fungicide of Botrytis cinerea in Tianjin

从天津市茄子保护地中分离出１２２个茄子灰霉病菌株中，多菌灵的抗性菌占４１０％，且多为高抗菌株；多菌灵与乙霉威间表现负交互抗性关系；速克灵和扑海因的抗性菌比率为２７９％，均为低抗水平，ＥＣ５０为２３０１１２０３８１０μｇ／ｍＬ，两种药剂存在交互抗性；对多菌灵、速克灵、扑海因均有抗性的菌株占供试菌株的２７９％，均敏感的菌株占５９０％，对多菌灵有抗性而对速克灵和扑海因敏感的菌株只占１３１％。

One handred and twenty two strains of Botrytis cinerea were isolated from greenhouse eggplants in Tianjin The ratio of resistant strains to carbendazim was 41 0%,and most of them were high in resistance The relationship between carbendazim and diethofencarb is negative cross resistant The ratio of the resistant strains to procymidome and iprodione is 27 9%,and all of them are low resistance,its EC 50 being between 2 3011 20 3810 μg/mL,and the relationship between procymidome and iprodione being cross resistance The result suggested that there are about 27 9% strains that have resistance to carbendazim,procymidome and iprodione,and 59 0% strains are sensitive to the three fungicides Besides,the strains resistant to carbendazim but sensitive to procymidome and iprodione constitute about 13 1%