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Bt基因抗虫玉米对玉米蚜种群增长的影响

李丽莉1,2;王振营1;何康来1;白树雄1;花蕾2   

  1. 1中国农业科学院植物保护研究所植物病虫害生物学国家重点实验室, 北京 100094;2西北农林科技大学植物保护学院, 陕西杨凌 712100
  • 收稿日期:2006-05-08 修回日期:1900-01-01 出版日期:2007-05-15 发布日期:2007-05-15

Effects of transgenic corn expressing Bacillus thuringiensis cry1Ab toxin on population increase of Rhopalosiphum maidis Fitch.

LI Li-li1,2; WANG Zhen-ying1; HE Kang-lai1; BAI Shu-xiong1; HUA Lei2   

  1. 1State Key Laboratory for the Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094, China;2College of Plant Protection, Northwest A & F Universit , Yangling 712100, Shaanxi, China
  • Received:2006-05-08 Revised:1900-01-01 Online:2007-05-15 Published:2007-05-15

摘要: 在人工气候箱条件下研究了玉米蚜(Rhopalosiphum maidis Fitch)取食表达cry1Ab杀虫蛋白Bt抗虫玉米的实验种群生命表.结果表明:两种不同Bt玉米杂交种DK647BTY (MON810转化事件)和NX4777(Bt11转化事件)对玉米蚜的生长、发育、繁殖和存活均无明显的不利影响,玉米蚜在DK647BTY和NX4777两种Bt玉米品种上的内禀增长率rm、周限增长率λ和种群净增殖率R0与各自对照之间没有显著差异;玉米蚜有翅蚜比率、各龄若虫的死亡率在Bt玉米和对照以及不同品种之间没有明显差异;Bt玉米对玉米蚜的寿命和繁殖历期也没有明显差异.表明表达cry1Ab杀虫蛋白的Bt玉米对玉米蚜的生长发育和繁殖没有明显影响.

关键词: 三维荧光, 土壤可溶性有机质, 氮沉降, 酶活性

Abstract: A laboratory study was made on the effects of transgenic corn expressing cry1Ab toxin from the bacterium Bacillus thuringiensis (Bt) on the life table of an experimental population of corn leaf aphid Rhopalosiphum maidis Fitch. The results showed that no obvious negative effects of two Bt corn hybrids DK647BTY (event MON810) and NX4777 (event Bt11) were observed on the net reproductive rate, average generation time, innate capacity for increase, and finite rate of increase of R. maidis, and there were no significant differences in the rate of alate, mortality of nymph, and longevity and fecundity duration of corn leaf aphid when feeding on Bt and non-Bt corn hybrids, suggesting that Bt corn expressing cry1Ab toxin had no side-effects on the development and reproduction of R. maidis.

Key words: nitrogen deposition, three-dimensional fluorescence spectra, enzyme activity., soil dissolved organic matter (DOM)