Inheritance mode and realized heritability of resistance to imidacloprid in the brown planthopper, Nilaparvata lugens (Stal) (Homoptera: Delphacidae)
文献类型: 外文期刊
第一作者: Zhu, Yu Cheng
作者: Zhu, Yu Cheng;Wang, Yan Hua;Liu, Xu Gan;Li, Shu Yong;Chen, Wen Ming;Shen, Jin Liang;Wang, Yan Hua;Wu, Sheng Gan
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关键词: Nilaparvata lugens;imidacloprid;resistance inheritance;realized heritability
期刊名称:PEST MANAGEMENT SCIENCE ( 影响因子:4.845; 五年影响因子:4.674 )
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收录情况: SCI
摘要: BACKGROUND: The brown planthopper, Nilaparvata lugens (Stal), is a serious pest that causes enormous losses to the rice crop in Asia. The genetic basis of imidacloprid resistance was investigated in N. lugens.RESULTS: The resistant strain, selected for imidacloprid resistance from a field population of N. lugens collected from Nanjing, Jiangsu Province, China, showed a 964-fold resistance compared with the laboratory strain. Progenies of reciprocal crosses (F1 and F1') showed similar dose- mortality responses (LC_(50)) to imidacloprid, and also exhibited a similar degree of dominance (D), 0.58 for F1 and 0.63 for F1'. Chi-square analyses of self-bred and backcross progenies (F2, F2' and BC respectively) rejected the hypothesis for a single gene control of the resistance. The estimated realized heritability (h~2) of imidacloprid resistance was 0.1141 in the resistant strain of N. lugens.CONCLUSION: The results showed that imidacloprid resistance in N. lugens was autosomal and was expressed as an incompletely dominant trait, probably controlled by multiple genes.
分类号: S4
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