抗虫杂交棉棉铃性状与单铃重的关系分析  

Relationship Analysis of Boll Characters and Boll Weight in Insect-resistance Hybrid Cotton(Gossypium hirsutum L.)

作　　者：汤飞宇[1] 王晓芳[1] 莫旺成[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/江西省作物生理生态与遗传育种重点实验室,江西南昌330045

出　　处：《江西农业大学学报》2011年第5期861-865,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：江西省农业科技支撑计划项目(2009BNA03800);江西省教育厅科学研究项目(GJJ09167)

摘　　要：研究不同铃重类型抗虫杂交棉棉铃性状的差异及与铃重的相关性。以3个高品质陆地棉品种(系)和6个转基因抗虫棉品种(系)为亲本,配制36个正反交组合。以单铃重为聚类指标,采用最小离差平方和法和欧氏平方距离将36个杂交组合分为大、中、小铃3种类型。对3种类型的单铃重和11个棉铃性状进行了方差分析和相关分析。结果表明:单铃重、铃壳重、单铃皮棉重、单铃种子重、单铃种子数、单粒种子重、铃横径和铃纵径表现出显著或极显著差异,单粒种子纤维重、单铃不孕子数、不孕子率和铃壳率差异不显著;简单相关分析和偏相关分析表明多数棉铃性状与单铃重的相关性在不同铃重类型间表现基本相同。单铃种子重对单铃重的贡献最大,依次是单铃皮棉重、单铃种子数。铃壳率、单粒种子重、单粒种子纤维重、铃纵径与单铃重的简单相关和偏相关均未达到显著水平;大中铃重类型的铃重与铃壳重的简单相关系数达到显著水平。该研究结果对于通过棉铃性状的调控提高单铃重具有一定的指导意义。To evaluate the relationship between boll characters and boll weight in Bt transgenic hybrid cotton（Gossypium hirsutum L.）,eighteen cotton crosses were made with three high fibre quality varieties（lines） as females and six transgenic insect-resistance varieties（lines） as males.Eighteen corresponding reciprocals were also obtained.They were divided into three types（large,medium,small） based on boll weight by Squared Euclidean distance and Ward＇s Method.Boll weight and eleven boll characters of the three types were separated using ANOVA procedure and the Duncan＇s multiple range test.The relationship between boll weight and eleven boll characters was investigated using bivariate and partial correlation analyses.The results showed the there was statistically significant difference in boll weight,boll shell weight,lint mass per boll,seed mass per boll,seed number per boll,single seed weight,boll length,boll width,contrary to lint mass per seed,motes per boll,ratio of motes per boll to ovules per boll and ratio of boll shell to boll weight for the three types.Little difference was found in the relationship of boll characters with boll weight among the three boll types.Bivariate and partial correlation analyses indicated that seed mass per boll assumed the first role in determining boll weight,followed by lint mass per boll and seed number per boll in turn.There was no statistically significant difference in the pearson and partial correlation coefficients between ratio of boll shell to boll weight,single seed weight,lint mass per seed,boll length and boll weight.Bivariate correlation analysis showed that boll weight was positively correlated to boll shell weight at 0.05 level for the large and medium boll types.

关 键 词：杂交棉 抗虫 棉铃性状 单铃重 

分 类 号：S562[农业科学—作物学]