贵州省水稻稻曲病菌对咪鲜胺的敏感性基线  

Sensitive Baseline of Ustilaginoidea virens to Prochloraz in Guizhou Province

作　　者：胡贤锋 李荣玉[1,3,2] 李明[1,3] 王健[1,2] 杨帆[1] 高秀兵[1,2] 

机构地区：[1]贵州大学作物保护研究所,贵阳550025 [2]贵州大学农学院,贵阳550025 [3]贵州大学贵州省山地农业病虫害重点实验室,贵阳550025

出　　处：《农药》2017年第3期219-221,227,共4页Agrochemicals

基　　金：国家自然科学基金项目(31460480);国家公益性行业(农业)科研专项(201203038);国家重点研发计划项目(2016YFD0200500);贵州省科技支撑计划项目(2016GZ97947);贵州大学引进人才科研项目(贵大人基合字(2015)07号)

摘　　要：[目的]监测水稻稻曲病菌对咪鲜胺的敏感性。敏感性基线是科学用药和抗药性监测的依据。[方法]采用菌丝生长速率法测定从贵州省的8个稻区分离的107株稻曲病菌菌株对咪鲜胺的敏感性。[结果]不同稻区的107株稻曲病菌菌株的EC_(50)值介于0.0086~0.2573mg/L之间,菌株之间的EC_(50)值最大相差29.91倍。[结论]供试菌株敏感性频率呈近似正态分布,初步确定将所有菌株的EC_(50)均值(0.1064±0.0578)mg/L作为贵州省稻曲病菌对咪鲜胺的敏感基线。[Aims] This study aims to detect the sensitivity of Ustilaginoidea virens to prochloraz. Sensitivity baseline is the basis of scientific use of pesticides and pesticides resistance monitoring. [Methods] The mycelium growth rate method was used to test the sensitive of 107 strains isolated from 8 rice areas in Guizhou province to prochloraz. [Results] The results showed that the ECso values of 107 U. virens strains in different rice areas are ranged from 0.0086 to 0.2573 mg/L. The ECs0 value of the most sensitive strains is as 29.91 times as the least. [Conclusions] According to gaussian distribution of wildly sensitive strains from field, the average ECs0 value （0.1064 ＋ 0.0578） mg/L was considered as the baseline-sensitivity of Uvirens to prochloraz in Guizhou.

关 键 词：稻曲病菌 咪鲜胺 敏感基线 贵州省 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]