陆地棉染色体片段代换系及F_1皮棉产量与产量构成因素的相关和通径分析  

Correlation and Path Analysis of Lint Yield and Yield Components of Cotton Chromosome Segment Substitution Lines and F_1

作　　者：黎波涛[1,2] 石玉真[1] 龚举武[1] 李俊文[1] 刘爱英[1] 王涛[1] 商海红[1] 巩万奎[1] 陈婷婷[1] 葛群[1] 王永波[1,2] 贾琳[2] 胡玉枢 袁有禄[1] 

机构地区：[1]中国农业科学院棉花研究所/棉花生物学国家重点实验室,农业部棉花生物学与遗传育种重点实验室,河南安阳455000 [2]常德市农业科学研究所,湖南常德415000 [3]辽宁省经济作物研究所,辽宁辽阳111000

出　　处：《中国农学通报》2016年第3期108-114,共7页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金“棉花陆海渐渗系的评价鉴定及纤维品质性状遗传分析”(31101188);国家863计划项目“高产优质多抗棉花分子育种与品种创制”(2012AA101108);国家973计划项目“棉花纤维品质功能基因组研究及优质高产新品种的分子改良”(2010CB126006);中央级公益性科研院所基本科研业务费专项重点项目“棉花陆海染色体片段代换系的评价及纤维品质遗传分析”(SJA1203)

摘　　要：探讨棉花染色体片段代换系皮棉产量与产量构成因素之间的相关关系,明确其产量育种的主攻方向,以1套陆地棉染色体片段代换系及F1为材料,采用相关与通径分析的方法,对5种环境条件下代换系亲本及F1的皮棉产量与产量构成因素进行分析。结果表明:产量构成因素的变异系数以铃数最大,铃重次之,衣分最小,且F1产量构成因素的变异系数在所有环境下均比代换系亲本要小。铃数、衣分及铃重与皮棉产量均呈正相关,除个别环境外均达到显著性水平,其与皮棉产量的相关和偏相关系数在代换系亲本中以铃数最大,而F1中则以衣分最大。衣分、铃数与皮棉产量的相关程度受环境影响小,而铃重受环境影响较大。除一种环境外,代换系亲本的直接通径系数以铃数最大,衣分次之,铃重最小,而F1中则以衣分最大,铃数次之,铃重最小;代换系亲本中各因素的间接通径系数均为正值,而F1中铃数与铃重相互之间的间接通径系数均为负值。材料类型和环境条件不同,其产量构成因素与皮棉产量的相关程度及贡献大小也存在较大差异。代换系亲本产量育种的主攻目标前期应该重在衣分,后期重在铃数,而F1则始终以提高衣分为主。In order to study the relations between lint yield and yield components in cotton chromosomesegment substitution lines（CSSLs） and clarify the main direction of yield breeding of cotton, a set of CSSLs andits F1 were used to analyze the relations between lint yield and yield components using the correlation and path analysis in five environments. The results showed that the variation coefficient of boll number of yieldcomponents was the largest, and followed by lint percentage and boll weight, respectively. Compared to CSSLs,the variation coefficient of yield components in F1 was smaller in all environments. Lint yield exhibited positiveand significant correlations with boll weight, lint percentage and boll number except for a few environments.The coefficients of simple correlation and partial correlation of boll number in CSSLs were the largest, but thecoefficients of lint percentage in F1 were the largest. Compared to lint percentage and boll number, the relationbetween boll weight and lint yield was controlled significantly by environment. Path analysis illustrated that theboll number in CSSLs had the highest positive direct effect on lint yield, followed by lint percentage and bollweight, but the lint percentage in F1 had the highest positive direct effect on lint yield, followed by boll numberand boll weight except for one environment. The indirect effects of yield components on lint yield in CSSLswere positive, but the indirect effects of boll number via boll weight and boll weight via boll number on lintyield in F1 were negative. The results indicated that the relations between lint yield and yield components, andthe effects of yield components on lint yield were significantly controlled by the type of materials andenvironment. Based on the results of this study, the main direction of cotton yield breeding using CSSLs was toimprove lint percentage at the early stage and boll number at the later stage, and for F1, the main direction ofyield breeding was to improve lint percentage.

关 键 词：陆地棉 染色体片段代换系 皮棉产量 产量构成因素 相关分析 通径分析 

分 类 号：S562[农业科学—作物学]