转cry1Ab基因水稻对非靶标昆虫白背飞虱种群增长的影响  

Effects of transgenic cry1Ab rice on population development of the white-backed planthopper, Sogatella furcifera (Horvath) (Homoptera:Delphacidae)

作　　者：周 霞[1] 程家安[1] 娄永根[1] 

机构地区：[1]浙江大学昆虫科学研究所,杭州310029

出　　处：《昆虫学报》2006年第5期786-791,共6页Acta Entomologica Sinica

基　　金：国家自然科学基金项目(30070500)

摘　　要：通过室内饲养实验及水稻氨基酸和碳、氮含量测定,比较研究了转cry1Ab水稻克螟稻(KMD1和KMD2)与其亲本秀水11对非靶标害虫白背飞虱种群增长的影响。结果表明,以克螟稻为食可对白背飞虱的产卵期和每雌产卵量产生一定影响。以KMD2为食的白背飞虱的产卵期为7.6天,每雌产卵量为95.0粒,均显著低于以母本秀水11为食的白背飞虱的12.7天和167.5粒。但是,以KMD1为食的白背飞虱仅产卵期(8.6天)显著变短,其每雌产卵量与以其母本秀水11为食的白背飞虱无显著差异。稻苗氨基酸含量分析结果表明,KMD2引起白背飞虱种群生殖力显著下降可能与其游离氨基酸的总量和丙氨酸含量的显著下降以及谷氨酸含量的显著上升有关。因此,转cry1Ab水稻可对白背飞虱种群增长产生影响,但其影响因转cry1Ab水稻品种而异。For assessing impacts of Bt rice on the non-target insects, the population parameters of the whitebacked planthopper, Sogatella furcifera （Horvath） fed on transgenie cry lAb rice varieties KMD1 and KMD2 and their parent rice variety XS11 were assayed in the laboratory. The results showed that the innate capacity for increase of S. furcifera on KMD2 was lower than that on XS11 due to the significant reduction of oviposition duration （7.6 d on KMD2 and 12.7 d on XS11, respectively） and the number of eggs laid per female （95.0 on KMD2 and 167.5 on XS11, respectively）. The chemical analysis indicated that this might be resulted from the significant difference of contents of total free amino acids, particularly two free amino acids （Ala and Glu） between KMD2 and XS11. But the effect of KMD1 was not the same as that of KMD2 except that there was also a significant reduction of oviposition duration （8.6 d on KMD1 ）. The results suggested that feeding on different rice varieties might have different effects on population development of S. furcifera.

关 键 词：BT水稻 非靶标害虫 白背飞虱 种群参数 氨基酸 

分 类 号：Q968[生物学—昆虫学]