草莓灰霉病病原菌的分离鉴定及室内毒力测定

Isolation and Identification of Strawberry Grey Mould Pathogen and Indoor Toxicity Measurement

本研究分离到1株草莓灰霉病病原菌HM-1,采用生长速率法测定了8种相对新型杀菌剂对该菌株的室内毒力。结果表明,在供试8种杀菌剂中,咯菌腈对草莓灰霉病菌的室内毒力最高,EC_(50)值为0.461 mg/L,相较于吡唑醚菌酯的相对毒力指数为8.182;氟环唑、氟硅唑、咪鲜胺和己唑醇对草莓灰霉病菌的室内毒力也较高,EC_(50)值分别为0.789、0.961、0.991、1.102mg/L,生产上均可考虑用于防治草莓灰霉病。

In this study,a strain of strawberry grey mould pathogen HM-1 was isolated.The indoor toxicity of 8 relatively new fungicides to this strain was determined by growth rate method.The results showed that among the tested eight fungicides,fludioxonil exhibited the highest indoor toxicity against Botrytis cinerea with the EC_(50) value as 0.461 mg/L and the relative toxicity index as 8.182 compared with pyraclostrobin.The indoor toxicity of epoxiconazole,flusilazole,prochloraz and hexaconazole to B.cinerea was also higher with the EC_(50) values as 0.789,0.961,0.991,1.102 mg/L,respectively,so they could be considered for strawberry grey mould control in production.