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辽宁省稻瘟病菌对稻瘟灵的敏感性监测
引用本文:祁之秋,鞠雪娇,刘雯雯,纪明山,李兴海,王英姿,刘志恒. 辽宁省稻瘟病菌对稻瘟灵的敏感性监测[J]. 植物病理学报, 2013, 43(2): 173-178
作者姓名:祁之秋  鞠雪娇  刘雯雯  纪明山  李兴海  王英姿  刘志恒
作者单位:沈阳农业大学植物保护学院,沈阳 110866
基金项目:水稻现代农业产业技术体系(CARS-01-02A)
摘    要: 利用菌丝生长速率法,测定了自辽宁省主产稻区2009-2010年分离的87株稻瘟病菌对稻瘟灵的敏感性。结果表明,稻瘟灵的抑制中浓度EC50值为0.35~7.01 μg/mL,敏感性差异达20倍;且2009年稻瘟病菌对稻瘟灵的敏感性高于2010年。根据野生敏感型病原群体对药剂敏感性呈正态分布的原理,辽宁省稻瘟病菌对稻瘟灵的敏感性基线定为(1.77±0.80)μg/mL,辽宁省主要稻区均有抗稻瘟灵菌株出现,除2010年在铁岭稻产区监测到1株中抗菌株外,大部分稻瘟病菌株都表现为低抗水平。稻瘟病菌不同生理小种群对稻瘟灵的敏感性无明显差别。

关 键 词:辽宁省   稻瘟病菌   生理小种群   稻瘟灵   敏感性  
收稿时间:2012-07-14;

Sensitivity detection of Pyricularia gresea to isoprothiolane in Liaoning Province
QI Zhi-qiu,JU Xue-jiao,LIU Wen-wen,JI Ming-shan,LI Xing-hai,WANG Ying-zi,LIU Zhi-heng. Sensitivity detection of Pyricularia gresea to isoprothiolane in Liaoning Province[J]. Acta Phytopathologica Sinica, 2013, 43(2): 173-178
Authors:QI Zhi-qiu  JU Xue-jiao  LIU Wen-wen  JI Ming-shan  LI Xing-hai  WANG Ying-zi  LIU Zhi-heng
Affiliation:College of Plant Protection, Shenyang Agricultural University, Shenyang 110866, China
Abstract:The mycelium growth rate method was used to test the sensitivity of 87strains of Pyricularia grisea to isoprothiolane from different distracts in Liaoning Province from 2009 to 2010. The results showed that the EC50 of the strains to isoprothiolane ranged from 0.35-7.01 μg/mL with a difference of more than 20 times. The sensitivity of strains isolated in 2009 to isoprothiolane was higher than that in 2010. According to gaussian distribution theory of wildly sensitive strains from field, the sensitive base-line of Pyricularia gresea isolates to isoprothiolane was (1.77±0.80) μg/mL in Liaoning. Except one moderately resistant isolate existed in rice producing areas of Tieling, most of the isolates were low resistant to isoprothiolane. The sensitivity of strains belonging to different physiologic race groups to isoprothiolane had no significant difference.
Keywords:Liaoning Province  Pyricularia gresea Pyricularia gresea  physiologic race group  isoprothiolane  sensitivity
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