梨黑斑病菌对苯醚甲环唑的敏感性分析  

Sensitivity Analysis on Alternaria alternata to Difenoconazole

作　　者：朱红艳[1] 蒋小芬[1] 李先明[1] 伍涛[1] 杨夫臣[1] 涂俊凡[1] 刘政[1] 秦仲麒[1] 

机构地区：[1]湖北省农业科学院果树茶叶研究所,武汉430064

出　　处：《湖北农业科学》2016年第24期6448-6450,共3页Hubei Agricultural Sciences

基　　金：梨产业技术体系(CAS-29-17);湖北省农业科技创新中心(2016-620-000-001-029);重点实验室开放基金课题(2015ZTSJJ3)

摘　　要：采用菌丝生长速率法测定了苯醚甲环唑对分离自金水梨园的43个梨黑斑病菌[Alternaria alternata（Fries）Keissler]菌株的EC_（50）。结果表明,苯醚甲环唑对梨黑斑病菌菌株的EC_（50）分布在0.071 9~1.488 6μg/m L范围内,平均值为0.507 2±0.333 3μg/m L。W检验梨黑斑病菌对苯醚甲环唑敏感性的频次分布呈正偏态分布。菌株主体表现为敏感,但存在敏感性降低的菌株。The EC_（50） of Alternaria alternata to difenoconazole were determined in 43 strains isolated from pear orchard in Jinshui,by the mycelium growth rate method. The results indicated that the EC_（50） distributed over 0.071 9 ~1.488 6 μg/m L. The means of EC_（50） was 0.507 2±0.333 3 μg/m L. W test showed that the results of frequency-analysis was positive skew distribution. Most isolates were sensitivity to difenoconazole,but low sensitivity isolates had been discovered.

关 键 词：梨黑斑病菌[Alternaria alternata(Fries)Keissler] 苯醚甲环唑 敏感性 

分 类 号：S432.44[农业科学—植物病理学] TQ445.1[农业科学—农业昆虫与害虫防治]