转基因棉对棉蚜繁殖与取食行为的影响  

The effect of transgenic cotton on fecundity and feeding behavior of Aphis gossypii(Homoptera:Aphididae)

作　　者：刘向东[1] 翟保平[1] 张孝羲[1] 崔金杰[2] 

机构地区：[1]南京农业大学农业部病虫监测与治理重点开放实验室,江苏南京210095 [2]中国农业科学院棉花研究所,河南安阳455112

出　　处：《南京农业大学学报》2002年第3期27-30,共4页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金资助项目 (3 0 170 613 )

摘　　要：对棉蚜在转Bt基因棉、双价棉及常规棉上的生命表进行研究 ,结果表明 ,双价棉上棉蚜的内禀增长率显著低于转Bt基因棉及常规棉 ,表现出明显的抗蚜性。分析棉蚜在不同类型棉株上取食行为的刺探电位 ,结果表明 ,转Bt棉和双价棉上的棉蚜取食行为存在显著差异 :转Bt棉上的棉蚜寻食和口针在叶肉细胞外的运动时间均短于双价棉上的 ,而口针在韧皮部筛管内分泌唾液和吸取植株养分的时间却显著长于双价棉上的。这种差异反映出两种转基因棉抗蚜性的差异。The life tables of cotton aphid Aphis gossypii on common,transgenic Bt and transgenic Bt+CpTI cotton were studied.The results showed that the intrinsic rate of increase(r m)of the cotton aphid on transgenic Bt+CpTI cotton was significantly lower than that on transgenic Bt and common cotton.The feeding behavior of the cotton aphid on those cottons was studied by electrical penetration graph(EPG)technique.The feeding behaviors of the aphids on two kinds of transgenic cotton were significantly different.The duration of non probe and the pathway of the stylet in the leaf were shorter on transgenic Bt cotton than that on the transgenic Bt+CpTI cotton.But the duration of the stylet salivation and sap ingestion in the phloem was longer on transgenic Bt cotton than that on transgenic Bt+CpTI cotton.It showed that the resistance of these two cultivars of transgenic cotton to cotton aphid was different.

关 键 词：取食行为 转基因棉 棉蚜 刺探电位 繁殖行为 

分 类 号：S435.622.3[农业科学—农业昆虫与害虫防治]