河南农业大学学报2017，Vol.51Issue(1)：36-41,70,7.
河南省小麦纹枯病菌对氟环唑及烯唑醇的敏感性
Sensitivity of Rhizoctonia cerealis to epoxiconazole and diniconazole in Henan Province
摘要
Abstract
The sensitivities of Rhizoctonia cerealis to epoxiconazole and diniconazole were determined by measuring the mycelial growth on the fungicide-amended media using 98 isolates collected from 15 cities of Henan province.The results indicated that 50％ effective concentration (EC50) values of all i solates to epoxiconazole and diniconazole ranged from 0.027 1 to 0.225 7 mg · L-1 and 0.033 8 to 0.346 3 mg · L-1,respectively.The results of the frequency analysis revealed that subpopulation,which was less sensitive to diniconazole,had been discovered in the tested isolates.However,most of the isolates were sensitive to epoxiconazole.The mean EC50 values of (0.087 7 ± 0.048 0) mg · L-1 and (0.063 6 ± 0.023 6) mg · L-1 for most isolates showed a unimodal curve distribution,which was treated as the sensitivity baseline of R.cerealis to epoxiconazole and diniconazole respectively.The mean EC50 value of epoxiconazole was 1.38 times that of diniconazole,which meant that R.cerealis was more sensitive to diniconazole.The isolates collected from different regions demonstrated different sensitivities.Especially,there was correlation to some extent between epoxiconazole and diniconazole with other nine fungicides.关键词
小麦纹枯病菌/氟环唑/烯唑醇/敏感性/河南Key words
Rhizoctonia cerealis/epoxiconazole/diniconazole/sensitivity/Henan分类
农业科技引用本文复制引用
徐建强,平忠良,李慧凯,杨霞,朱艳阁,刘庆涛..河南省小麦纹枯病菌对氟环唑及烯唑醇的敏感性[J].河南农业大学学报,2017,51(1):36-41,70,7.基金项目
国家自然科学基金项目(31401774) （31401774）
公益性行业(农业)科研专项(201303023) （农业）
河南科技大学大学生研究训练计划项目(2015148) （2015148）
