转双价双Bt基因(Cry1Ac+Cry2Ab)抗虫棉栽培地生存竞争能力研究

为建立国家转双价双Bt抗虫基因棉环境安全评价技术,对转双价双Bt基因(Cry1Ac+Cry2Ab)抗虫棉栽培地生存竞争能力进行研究,结果表明,转双价双Bt基因棉花与对照赣棉11相比,各生育期株高生长具有显著竞争优势,优势值3.48～4.75 cm;吐絮期棉覆盖度竞争优势超对照46.77个百分点,达显著水平;产量竞争力优势籽棉超对照1 013.85 kg/hm2,皮棉超对照433.20 kg/hm2,均未达到显著水平;发芽率竞争优势极显著,超过对照2.75个百分点。与非转基因常规棉相比,转双价双Bt抗虫基因棉生存竞争能力优势显著。

Study on Survival Competitive Ability of Transgenic Cotton Harboring Cry1Ac+Cry2Ab Double Bt Genes in Cultivated Field

The research studied for establishing the environmental safety assessment technologies of bivalent Bt genes(Cry1Ac+Cry2Ab)transferred cotton in China.The result showed that:the plant height competitive advantage of transgenic cotton harboring double genes(Cry1Ac+Cry2Ab)increased 3.48～4.75 cm in whole growth stages compared to the non-transgenic cotton significantly.The coverage competitive advantage was 46.77 pencentage points more than control significantly.The yield competitive advantage of seed cotton was 1 013.85 kg/hm2 more than control and the lint yield was 433.20 kg/hm2 more than control,but not significantly.The germination rate competitive advantage was 2.75 percentage points more than control,but the difference was not significant.The survival competitive ability of transgenic cotton harboring Cry1Ac+Cry2Ab double Bt genes was higher than the non-transgenic cotton significantly.