2007年我国部分麦区小麦白粉菌对三唑酮的抗药性监测  

Monitoring of resistance of Blumeria graminis f.sp.tritici isolates to triadimefon in 2007

作　　者：曹学仁[1] 赵文娟[1,2] 周益林[1] 段霞瑜[1] 张莹 丁克坚[2] 

机构地区：[1]中国农业科学院植物保护研究所、植物病虫害生物学国家重点实验室,北京100193 [2]安徽农业大学植物保护学院,合肥230036 [3]鞍山市二一九公园管理处,鞍山114001

出　　处：《植物保护》2008年第6期74-77,共4页Plant Protection

基　　金：公益性行业科研专项(nyzx07048);国家科技支撑计划项目(2006BAD08A01、2006BAD08A05、2006BAD02A16)

摘　　要：采用拌种离体叶段法测定了我国9个省(市)的112个小麦白粉菌株对三唑酮的抗性。结果表明,供试菌株的平均EC50为57.25mg/L,平均抗性水平为27.39倍,其中86.61%供试菌株已经产生抗性,抗药性比敏感菌株高出10～40倍的菌株占47.32%,四川、山东、甘肃和贵州等地菌株的抗性高于其他地区。此结果可为三唑类杀菌剂在我国的推广应用和制定合理的抗药性治理措施提供依据。The resistance of 112 isolates of Blumeria graminis f. sp. tritici to triadimefon was tested by seed treatment and detached leaf segment methods. The isolates tested were sampled from 9 provinces or cities. The results showed that the mean EC50 of all isolates tested was 57.25 mg/L, and the mean resistance factor （RF） was 27.39. The isolates with their mean resistance factors as ten to forty folds higher than the susceptible isolates accounted for 47.32%. The resistance of B. graminis f. sp. tritici populations from Sichuan, Shandong, Gansu and Guizhou to triadimefon was higher than that from other regions. These results may provide a reference for management of triazole fungicide resistance of wheat powdery mildew, as well as the development and use of triazole fungicides.

关 键 词：小麦白粉菌 三唑酮 抗药性 

分 类 号：S435.121.46[农业科学—农业昆虫与害虫防治] S481.4[农业科学—植物保护]