高品质陆地棉与转Bt基因抗虫棉杂交株型性状的遗传及与产量性状的关系  

Genetic Analysis of Plant Type Traits and the Relationships between Plant Type Traits and Yield Traits of hybrids of Bt Transgenic Cotton×High Quality Upland Cotton

作　　者：汤飞宇[1] 莫旺成[1] 王晓芳[1] 肖文俊[1] 

机构地区：[1]江西农业大学农学院/作物生理生态与遗传育种教育部重点实验室,南昌330045

出　　处：《中国农学通报》2011年第1期79-83,共5页Chinese Agricultural Science Bulletin

基　　金：江西省农业科技支撑计划项目"棉花优质高产多抗新品种选育与示范"(2009BNA03800);江西省教育厅科学研究项目"高品质陆地棉单铃皮棉产量形成与调控的遗传机理"(GJJ09167)

摘　　要：采用增广NCⅡ设计,以5个高品质陆地棉品种(系)为母本,5个转Bt基因抗虫棉品种(系)为父本组配的25个杂交组合为材料,研究主要株型性状的遗传效应、杂种优势及与产量性状的相关性。结果表明,株高、始果枝高、果枝数和果节数的平均中亲优势较小,但不同组合间差异较大,均符合加性遗传模型。遗传相关分析表明,株高与株铃数、单株皮棉重呈极显著正相关;果枝数与株铃数呈极显著正相关,与铃重呈极显著负相关;果节数与株铃数、衣分和单株皮棉重呈显著正相关。株型性状与产量性状间的关联性主要是由果节数与株铃数、铃重的相关引起。研究结果为高品质抗虫棉理想株型性状的选育与调控具有一定的指导意义。The objectives of this study were to evaluate the genetic effects and heterosis of plant type characters in hybrids by crossing five Bacillus thuringiensis （Bt） transgenic cotton varieties as male parent and five high quality upland cotton varieties as female parent, and analyze the relationships between plant type characters and yield traits. The results showed the mean mid-parent heterosis of plant height, height of the first fruiting branch, fruiting branch number and fruiting node number were fairly low, but had large variations among different cross combinations. The four plant type characters exhibited primarily additive genetic model. The genetic correlation analysis between plant height and bolls per plant, single plant lint yield showed significant positive correlation. Fruit branch number was positively related with bolls per plant, but was negatively correlated with boll weight. There were significant positive relationships between fruit node number and bolls per plant, lint percentage, and single plant lint yield. The relationship between plant type traits and yield traits was mainly due to the correlation between fruit node number and bolls per plant, boll weight.

关 键 词：高品质陆地棉 转BT基因抗虫棉 株型性状 产量性状 遗传分析 

分 类 号：S562.035[农业科学—作物学]