以转基因抗虫杂交棉组合“苏抗 10 2”、转基因抗虫棉种质系“苏抗 310”为材料 ,研究抗虫棉的棉铃形成规律。结果表明 :转基因抗虫杂交棉苏抗 10 2成铃集中 ,7月 2 1日至 8月 30日富照期内成铃率达 74.5 5 % ,单铃籽棉重高 ,3个时段 (7月 2 1日至 7月 31日、8月 1日至 8月 10日、8月 11日至 8月 2 0日 )铃重分别比常规棉对照“泗棉 3号”提高 2 8.80 %、34.2 7%和 2 4.72 % ;苏抗 10 2有较大的库容 ,营养物质向纤维和种子的运转率高于常规棉对照泗棉 3号 ,这是苏抗 10 2获得高产优质的生理基础。转基因抗虫棉苏抗 310不同时段的成铃率、单铃籽棉重有类似于受体品种泗棉 3号的趋势 ,其铃壳厚 ,且铃壳中的贮存物质流向纤维和种子的运转率慢于常规棉对照 ,这是转基因抗虫棉苏抗 310纤维积累量较低的主要原因 The cotton bolls formation pattern of insect-resistant cotton was studied by using the combinations of “Su Kang 10 2” and transgenic line “Su Kang 310” of transgenic insect-resistant cotton. The results showed that the bolls of transgenic insect-resistant hybrid cotton were resistant to 10 2 boll blossom, the boll forming rate reached 74.5 5% during the rich period from July 21 to August 30, and the weight of single boll seed cotton was 3 months From August 1 to July 31, August 1 to August 10, August 11 to August 20, the boll weights increased by 2.80% and 34.27 respectively over the conventional cotton control “Simian 3” % And 2 4.72%. Sukang 10 2 had a larger storage capacity. The nutrient and fiber-to-seed operating rates were higher than that of the conventional cotton control Simian No.3, which was the physiological basis for high yield and quality of Sukang 10 2. The rate of boll formation in transgenic Bt cotton plants was similar to that of the recipient variety Simian No.3. The boll shell thickness was thick and the flow rate of stored material in the boll shell to the fiber and seeds Slower than the conventional cotton control, which is the main reason for the lower accumulation of transgenic cotton with Bt cotton 310