贵州省稻瘟病菌对稻瘟灵的抗药性测定  

Test on resistance of Magnapothe grisea to isoprothiolane in Guizhou province

作　　者：袁洁[1] 杨学辉[1] 何海永[1] 金星[2] 

机构地区：[1]贵州省农业科学院植物保护研究所,贵阳550000 [2]贵州省农业厅植保植检站,贵阳550001

出　　处：《植物病理学报》2005年第S1期71-73,共3页Acta Phytopathologica Sinica

基　　金：贵州省科学技术基金[计字(2001)3056号]贵州省科技攻关项目(黔科合2003NGY019)

摘　　要：对来自贵州省20个县(市)200余份稻瘟病标样上的146个单孢菌株采用生长速率法测定了稻瘟病菌对稻瘟灵的抗药性。结果表明,贵州省主要稻区都有抗稻瘟灵菌株出现,但大部分抗性菌株的抗药性水平表现为低抗水平。黔东南、贵阳、遵义地区抗性菌株频率明显高于其它几个地区,抗性菌株频率分别为10．96％、9．59％和7．53％。Growth rate method was used to test resistance to isoprothiolane (IPT) in 146 isolates of Mag-napothe grisea, from more than 200 disease samples of 20 counties in Guizhou province. The results showed that resistant isolates had occurred in major districts of Guizhou province, but most of them were low resistance to IPT. Resistance frequency in Qiandongnan, Guiyang and Zunyi was 10.96% , 9.59% and 7. 53% , respectively , which was significantly higher than in other districts.

关 键 词：稻瘟病菌 稻瘟灵 抗药性 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]