浙江省农业科学院机构知识库

Resistance monitoring and assessment of resistance risk to pymetrozine in laodelphax striatellus (Hemiptera: Delphacidae)

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文献类型：外文期刊

作者： Ban, Lanfeng ¹ ; Zhang, Shuai ² ; Huang, Ziyang ¹ ; He, Yueping ³ ; Peng, Yongqiang ¹ ; Gao, Congfen ¹ ;

作者机构： 1.Nanjing Agr Univ, Key Lab Integrated Management Crop Dis & Pests, Minist Educ, Dept Pesticide Sci,Coll Plant Protect, Nanjing 210095, Jiangsu, Peoples R China

2.Natl Agrotech Extens & Serv Ctr, Beijing 100026, Peoples R China

3.Zhejiang Acad Agr Sci, State Key Lab Breeding Base Zhejiang Sustainable, Inst Plant Protect & Microbiol, Hangzhou 310021, Zhejiang, Peoples R China

关键词： insecticide;Laodelphax striatellus;resistance monitoring;resistance risk assessment

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （影响因子：2.381；五年影响因子：2.568 ）

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收录情况： SCI

摘要： Laodelphax striatellus (Fallén) is a major pest of cultivated rice. Pymetrozine, a pyridine azomethine compound, represents a novel insecticide with a selective activity against sucking pests. The resistance of L. striatellus to thiamethoxam, nitenpyram, chlorpyrifos, and pymetrozine in five field populations, collected from Jiangsu, Anhui, and Zhejiang in China, was monitored from 2009 to 2011 in laboratory. All the populations kept susceptible to minor resistance to thiamethoxam and nitenpyram in the 3 yr (0.6-to 2.2-fold and 0.8-to 3.8-fold, respectively), while the insects developed low to high level resistance to chlorpyrifos (9.7-to 76.1-fold). Three populations were all susceptible to pymetrozine (1.1-to 2.1-fold) in 2009, but the Wuxi and Yancheng populations developed low level resistance to pymetrozine (5.5-fold and 5.3-fold, respectively) in 2011. Meanwhile, the resistance level of the selected strain reared in laboratory increased by 1.0-fold after 12-generation selection with pymetrozine. The realized heritability (h~2) of resistance at different selection stages was estimated as 0.0470 (F1 to F13) and 0.2070 (F5 to F13) by using threshold trait analysis. It suggested that L. striatellus had the definite risk of resistance to pymetrozine.

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Resistance monitoring and assessment of resistance risk to pymetrozine in laodelphax striatellus (Hemiptera: Delphacidae)

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