转双价抗虫基因棉花的主要农艺性状的遗传变异

Genetic Variation of Main Agronomic Traits of Transgenic Insect Resistant Lines in Cotton

以11个转外源基因(Cry1Ac+API-B)系为材料,受体亲本陆地棉品种鄂抗9号为对照,研究其在抗棉铃虫性、产量和纤维品质性状上的差异。结果表明:11个转基因系的抗棉铃虫效果明显,达到中抗和高抗水平;转基因系及其受体、转基因系之间在单铃重等10个性状上均存在极显著性差异;和受体亲本相比,各个转基因系变异方向比较一致的性状有:衣指、衣分降低;而株高、单株结铃数、单铃重、子指、皮棉产量、纤维长度、断裂比强度、马克隆值、伸长率等性状的变化方向不定。

Eleven transgenic Cry1Ac＋API-B cotton lines were evaluated on the agronomic traits,like resistance to cotton Bollworm,yield and fiber quality traits.Compared with their receptor Ekang 9,distinguished resistance to cotton bollworm was found among these transgenic lines,and most of them presented moderate resistance or high resistance to bollworm.Moreover,significant differences were also found in yield and yield related components between transgenic lines and Ekang 9.All transgenic lines decreased in lint percentage and lint index.But other agronomic traits like plant height,number of fruit branch,bolls per plant and fiber quality traits like length,micronaire and strength varied in different directions compared these transgenic lines with Ekang 9.