农药学学报2016，Vol.18Issue(6)：724-728,5.DOI:10.16801/j.issn.1008-7303.2016.0102
湖北省小麦赤霉病菌对多菌灵、戊唑醇和咪鲜胺的敏感性
Sensitivity ofFusarium graminearum from Hubei province to carbendazim, tebuconazole and prochloraz
摘要
Abstract
In 2014, 206 single-spore isolates ofFusarium graminearum collected from seven districts in Hubei province were identified by morphology. Sensitivity of 100 randomly selected isolates to carbendazim, tebuconazole and prochloraz was assayed by using mycelium growth inhibition method, and the sensitivity baseline was established. The results showed that the EC50 values of carbendazim, tebuconazole and prochloraz toF. graminearum isolates were in the ranges of 0.115-0.705, 0.006-1.356 and 0.002-0.370 μg/mL, and mean values of 0.248, 0.181 and 0.040 μg/mL, respectively. The sensitivity distributions of the 100 isolates to these three fungicides all followed unimodal quasi-normal distribution , which indicated that the EC50 mean values could be used as the sensitivity baseline ofF. graminearum in Hubei province to these three fungicides. Using 10 times of the mean EC50 value of each fungicide as the discriminatory dose, the sensitivity ofF. graminearum in Hubei province was monitored from 2015–2016. The study showed that the average inhibition rates of carbendazim, tebuconazole and prochloraz toF. graminearum isolates were 100%, 85.14%, 82.35%, respectively, in 2015, and 100%, 76.67%, 73.62%, respectively, in 2016. In summary,F. graminearum isolates in Hubei province still wxhibit high sensitivity to carbendazim, tebuconazole and prochloraz, although the inhibition rates of tebuconazole and prochloraz were slightly decreased in 2016.关键词
小麦赤霉病菌/敏感性/敏感基线/多菌灵/戊唑醇/咪鲜胺Key words
Fusarium graminearum/sensitivity/sensitivity baseline/carbendazim/tebuconazole/prochloraz分类
农业科技引用本文复制引用
宋阳阳,林杨,罗汉钢,罗朝喜..湖北省小麦赤霉病菌对多菌灵、戊唑醇和咪鲜胺的敏感性[J].农药学学报,2016,18(6):724-728,5.基金项目
国家自然科学基金(31301614) （31301614）
