外源抗虫基因对棉花杂种优势的影响  

Effect of Different Foreign Genes on the Heterosis in Upland Cotton

作　　者：张永山[1] 吕友军[2] 郭红祥[3] 

机构地区：[1]中国农业科学院棉花研究所,河南安阳455112 [2]浙江大学农业与生物技术学院,浙江杭州310029 [3]河南农业大学,河南郑州450002

出　　处：《作物学报》2004年第3期215-220,共6页Acta Agronomica Sinica

基　　金：国家"九五"攻关计划 ( 96 0 0 2 0 2 0 1 0 2 );河南省科技攻关项目

摘　　要：利用 3种不同外源抗虫基因棉及其受体和同一常规棉杂交 ,研究外源抗虫基因对棉花杂交F1的抗虫性和主要农艺性状的影响。结果表明 ,3种外源基因对杂交F1的优势影响较一致。杂交F1的抗虫性没有杂种优势 ,不同发育阶段叶片的抗虫性均不高于其抗虫亲本 ,但和其抗虫亲本有相似的时间变化规律。在花铃期杂交F1的不同器官的抗虫性差异较大 ,杂交F1叶片的抗虫性低于抗虫亲本 ,花蕊、幼蕾、幼铃等生殖器官的抗虫性好于其抗虫亲本。Bt毒蛋白含量测定结果和室内抗虫性鉴定表现基本一致。外源抗虫基因对杂交F1的产量性状和纤维品质性状总体上无影响。外源抗虫基因可提高早熟性 ,第一果枝节位的中亲优势和竞争优势有显著差异。In order to study the effect of foreign genes on the main agronomic traits and insect-resistance in hybrid F 1, the crosses were made by using three different foreign-gene cotton and their receptors with the same conventional female. The results showed that, there were relatively similar changes affected by different gene in hybrid F 1. There was no advantage in hybrid F 1. At different stage, the insect resistance in leaves was no higher in hybrid than that in its insect-resistant parent, but they had the similar spatio-temporal distribution compared with insect-resistant parent. During the flowering-boll stage, the insect resistance of small squares, small bud and stamen in hybrid F 1 was apparently higher than that in the parents. The measurement results of Bt toxin protein were familiar with the identification result of insect-resistance in laboratory. Foreign genes have no effect on yield traits and fiber traits on the whole.

关 键 词：棉花 杂种优势 外源抗虫基因 抗虫性 农艺性状 棉铃虫 

分 类 号：S562[农业科学—作物学]