红铃虫是棉花的主要虫害，为害蕾、花、铃和种子，对产量的影响很大，因而引起育种家们的高度重视。经努力已把产生毒素蛋白的Ｂｔ基因转育到栽培陆地棉中，同时也采用远缘杂交的方法培育出大批抗各种虫害的新种质材料。已有研究表明，转Ｂｔ基因棉对棉铃虫、玉米螟的抗性... Red bollworm is the main insect pest of cotton, which is harmful to buds, flowers, bells and seeds and has a great impact on the yield, which has caused great attention of breeders. The efforts have been made to produce toxin protein Bt gene transferred to cultivated Upland cotton, but also by distant hybridization method to cultivate a large number of new germplasm resistant to various insect pests material. It has been shown that the resistance of Bt cotton to cotton bollworm and corn borer is ...