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选用经杂交转有的11个Bt抗虫棉品系，进行了抗虫指数与产量构成性状的相关性测定，探讨担棉体内导入外源抗虫基因与其主要经济性状基因的相关性质及程度。结果表明，抗虫指数与产量、铃重呈极显著负相关，相关系数分别为-0．8148，－0．8027。因此提出，抗虫育种应在抗虫性稳定的基础上，保持农分，主攻铃重。
Eleven Bt cotton lines were selected for hybridization to determine the correlation between insect resistance index and yield traits, and to explore the nature and extent of the related genes and the introduction of foreign insect-resistant genes. The results showed that there was a significant negative correlation between the insect resistance index and yield and boll weight, the correlation coefficients were -0.8148 and -0.8027 respectively. Therefore, insect-resistant breeding should be insecticidal stability, based on the maintenance of farming, the main bell weight.