| 中国北方棉区转基因抗虫棉对棉苗蚜及其两种天敌的影响(英文) |
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| 引用本文： | Velders R M,崔金杰,夏敬源,vander WerfW.中国北方棉区转基因抗虫棉对棉苗蚜及其两种天敌的影响(英文)[J].棉花学报,2002,14(3):175-179. |
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| 作者姓名： | Velders R M 崔金杰 夏敬源 vander WerfW |
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| 作者单位： | 中国农业科学院棉花研究所，中国农业科学院棉花研究所，中国农业科学院棉花研究所，荷兰瓦赫宁根农业大学植物科学系作物与杂草生态实验室 河南安阳455112荷兰瓦赫宁根农业大学植物科学系作物与杂草生态实验室，河南安阳455112，河南安阳455112 |
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| 摘 要： | 2 0 0 1年田间小区试验研究了转 Bt基因棉和转双价基因 ( Bt+ Cp TI)棉对棉苗蚜及其天敌种群动态的影响 ;室内研究了转基因抗虫棉对两种棉蚜天敌的生物学影响。结果表明 ,转基因抗虫棉对棉蚜种群数量的影响不明显 ,未达显著水平。单作转基因棉田棉蚜发生期比麦套棉田提前 5天左右 ,发生数量是麦套棉田的 1 .6倍 ,表明麦棉套作可有效的控制苗蚜的为害。室内研究表明 ,异色瓢虫对用 Bt棉处理的的棉蚜的捕食量比对照增加 2 2 .0 % ,棉蚜茧蜂对用 Bt棉处理的棉蚜的寄生率降低 2 3.5 %。
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| 关 键 词： | 北方棉区 转基因棉 棉蚜 天敌 |
Influence of Transgenic Cotton on the Cotton Aphid (Aphis gossypii) and Its Two Major enemies in North China |
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| VELDERS R M ,CUI Jing Jie ,Xia Jing Yuan ,van der Werf W.Influence of Transgenic Cotton on the Cotton Aphid (Aphis gossypii) and Its Two Major enemies in North China[J].Cotton Science,2002,14(3):175-179. |
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| Authors: | VELDERS R M CUI Jing Jie Xia Jing Yuan van der Werf W |
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| Institution: | VELDERS R M 1,2,CUI Jing Jie 1,Xia Jing Yuan 1,van der Werf W 2 |
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| Abstract: | A field experiment was conducted in the spring of 2001 to determine the influence of transgenic insect resistant cotton, expressing either a Bt toxin gene or a Bt toxin gene plus a cowpea trypsin inhibitor gene, on the seasonal abundance of the cotton aphid and its major predator and parasite species. Laboratory experiments showed a 22.0% higher predation by the ladybeetle Harmonia axyridis and a 23.5 % lower parasitization by the parasitoid Lysiphlebia japonica when Bt cotton fed aphids were offered, in comparison to conventional cotton fed aphids. In the field, differences in aphid population dynamics between cotton genotypes were small and largely insignificant. Aphid populations increased 5 days earlier and to a 1.6 times higher maximum level in monoculture cotton than in intercropped cotton, confirming the use of wheat cotton intercropping to enhance biological aphid control. |
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| Keywords: | North china transgenic cotton cotton aphid natural enemies |
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