1998•Acta Agriculturae Boreali-SinicaRequires access
Identification on resistance to fungicide of Botrytis cinerea in Tianjin
Wanli Wang, Yong Wang, Liu Geng-chun, Yongjuan Hao, Chunyan Liu, Jing Chen
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Abstract
One handred and twenty-two strains of Botrytis cineerea 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 ratiio of the resistant strains to procymidome and iprodione is 27.9%, and all of them are low resistance, its EC_(50) being betweeen 2.3011-20.3810 mug/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 carbeneazim, 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%.