转双价抗虫抗除草剂基因(Cry1Ac+EPSPS)棉与非转基因棉生物学特性差异的研究

以双价抗虫抗除草剂基因(Cry1Ac+EPSPS)棉为观察品种,非转基因棉赣棉11号为对照品种,进行了棉花生育性状、产量性状等的比较和评价研究。结果表明:与对照品种相比,双价抗虫抗除草剂基因棉在成铃至吐絮期株高增长显著(超速6.6～9.1 cm);在盛铃期之前成铃变缓极显著(少10.7个铃);花铃期至盛铃期果枝层生成慢显著(少1层);果枝角度变大极显著(大2.1°);主茎节距拉长极显著(长0.6 cm);叶色加深显著;衣分率降低极显著(低1.7%);籽指升高极显著(高1.77 g);纤维整齐度指数升高显著(高1.325%);纺纱均匀指数增加显著(增7.5);籽棉、皮棉、霜前籽棉、霜前皮棉均减产极显著。初步评价:双价抗虫抗除草剂基因棉的生育性状、产量性状较差,纤维纺纱性状较好,推广种植性较差。

Study on Differences in Biological Characteristics between Transgenic Cotton with Insect- resistant and Herbicide -resistant Genes ( Cry1Ac +EPSPS) and Non - transgenic Cotton

Taking the transgenic cotton with insect-resistant and herbicide-resistant double genes(Cry1Ac+EPSPS) as the observed variety,and the non-transgenic cotton Ganmian No.11 as the control variety(CK),their biological characteristics(growth and development characters,yield traits etc.) were compared and evaluated.The results indicated that: as compared with CK,for the transgenic cotton with double genes,its plant height from boll-forming stage to boll opening stage increased significantly by 6.6～9.1 cm,the number of boll before boll peak period reduced very significantly by 10.7 bolls,the layer number of fruiting branch from flower-boll stage to boll peak stage reduced obviously by 1 layer,the angle of the fruit branch was very significantly increased by 2.1°,the main stem pitch was extremely significantly elongated by 0.6 cm,the color of leaves was deepened significantly,the lint percentage was extremely significantly decreased by 1.7%,the seed index rose very markedly by 1.77 g,the fiber uniformity index increased significantly by 1.325%,the spinning uniformity index increased significantly by 7.5,and the yields of seed cotton,lint cotton,seed cotton before frost,and lint cotton before frost were all extremely significantly decreased.The preliminary evaluation was that: the transgenic cotton with insect-resistant and herbicide-resistant double genes had worse growth and development characters,worse yield traits,better fiber spinning quality,and worse popularization and planting value.