| 棉铃虫对三氟氯氰菊酯不同抗性种群的田间适合度 |
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| 引用本文： | 芮昌辉,孟香清,赵建周,李富根.棉铃虫对三氟氯氰菊酯不同抗性种群的田间适合度[J].农药学学报,1999,1(3):67-70. |
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| 作者姓名： | 芮昌辉 孟香清 赵建周 李富根 |
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| 作者单位： | 1.中国农业科学院植物保护研究所,北京100094 |
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| 基金项目： | 国家“九五”科技攻关! (96 - 0 0 5- 0 1- 0 8)资助课题 |
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| 摘 要： | 借鉴昆虫自然种群生命表的研究方法 ,在田间网笼中比较了棉铃虫三氟氯氰菊酯抗性、敏感品系及其杂交 F1代的主要生物学特征和净增殖率 (R0 )指标。结果表明 :在田间自然状态下 ,抗性品系的每头雌蛾平均产卵量、卵孵化率和幼虫发育历期分别为 314粒、2 0 .1%和 2 2 .9天 ,敏感品系分别为 4 38粒、2 8.8%和19.0天 ,两品系间差异显著 ,说明抗性品系在这些特征上存在较明显的不利性。 F1代的幼虫发育历期介于抗性和敏感品系之间。与敏感品系相比 ,抗性品系的相对适合度为 0 .4 6 ,杂交 F1代为 1.4 6。
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| 关 键 词： | 棉铃虫 三氟氯氰菊酯 抗药性 田间适合度 |
THE RELATIVE FITNESS OF CYHALOTHRIN- RESISTANT,SUSCEPTIBLE, AND HYBRID PHENOTYPES OF COTTON BOLLWORM IN THE FIELD |
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| Rui Chang-hui,Meng Xiang-qing,Zhao Jian-zhou and Li Fu-gen.THE RELATIVE FITNESS OF CYHALOTHRIN- RESISTANT,SUSCEPTIBLE, AND HYBRID PHENOTYPES OF COTTON BOLLWORM IN THE FIELD[J].Chinese Journal of Pesticide Science,1999,1(3):67-70. |
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| Authors: | Rui Chang-hui Meng Xiang-qing Zhao Jian-zhou and Li Fu-gen |
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| Institution: | 1.Institute of Plant Protection |
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| Abstract: | Relative fitness of cyhalothrin-resistant(R), -susceptible (S) and the F1 hybrids(RS) strains of Helicoverpa armigera Hübner was evaluated in a field cage trial in 1997 in Beijing, P. R. China. Egg production, egg hatchability, developmental period of larva or pupa, and weight of pupa were investigated in each strain. The results showed that there are significantly fewer egg production per female, lower egg hatchability and longer period of larval development in R strain compared with that in S strain. The intrinsic rates (R0) of natural increase in the R, S, and RS strains calculated by establishing life table are 15.17, 38.13, and 55.79,respectively. Relative fitness of R strain is only 0.46 based on comparing R0 of R strain with that of S strain, but the value is 1.46 in RS strain. |
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| Keywords: | Helicoverpa armigera Cyhalothrin Insecticide resistance Relative fitness in the field |
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