欢迎访问《中国农学通报》,

中国农学通报 ›› 2017, Vol. 33 ›› Issue (2): 35-40.doi: 10.11924/j.issn.1000-6850.casb16040160

所属专题: 棉花

• 农学 农业基础科学 • 上一篇    下一篇

黄河流域棉花综合群体品系的遗传多样性分析

刘小斌,张亚玲,郭小平   

  1. 华中农业大学作物遗传改良国家重点实验室,华中农业大学作物遗传改良国家重点实验室,华中农业大学作物遗传改良国家重点实验室
  • 收稿日期:2016-04-26 修回日期:2016-06-27 接受日期:2016-07-15 出版日期:2017-02-09 发布日期:2017-02-09
  • 通讯作者: 郭小平
  • 基金资助:
    国家科技支撑计划“长江流域棉花新品种培育与扩繁”(2011BAD35B05-2)

Genetic Diversity Analysis of Comprehensive Population Lines Derived From Yellow River Basin Cotton Varieties

刘小斌,张亚玲 and   

  • Received:2016-04-26 Revised:2016-06-27 Accepted:2016-07-15 Online:2017-02-09 Published:2017-02-09

摘要: 为拓宽长江流域棉花品种的遗传变异,提高品种的抗黄萎病性能,采用19 个黄河流域棉花品种相互杂交构建了棉花综合群体,在长江流域棉区进行育种选择,衍生出37 个优良种质系。通过两年田间试验,对14 个性状进行考查,结果表明:衍生种质系间在黄萎病抗性上的变异最大,其次为产量性状,但在纤维品质性状上的变异较小。分子水平的聚类分析表明,黄河群体衍生种质系存在较大的遗传变异,可以聚在不同的类群,与长江流域棉花品种有明显的区别。对衍生种质系进行性状考察,因子分析结果表明:前7 个公因子的方差变异累积贡献率达83.08%,其中纤维品质因子、株型因子、产量因素因子和感病因子的特征值均大于1,其方差贡献率分别为28.45%、15.50%、12.07%、8.87%。

关键词: 山楂古树, 山楂古树, 土壤, 化学特性

Abstract: In order to broaden the genetic variation and improve the resistance toVerticillium wilt of cotton varieties in Yangtze River Basin, a comprehensive population was built by 19 cotton varieties from Yellow River Basin through mixed hybridization, 37 elite lines were derived through breeding selection at Yangtze River Basin and 14 traits were investigated by two years’field experiment. The results showed that the derived lines had the greatest variation in the resistance toVerticillium wilt , and then was in yield traits, the lowest variation was found in fiber quality traits. Clustering analysis was performed by SSR markers, the 37 derived lines showed large genetic variation and could be dispersed in different cluster groups, which showed a clear distinction from the cotton varieties from the Yangtze River Basin. The factor analysis was performed on the investigated traits of the derived lines, the first 7 common factors contributed to the total variance up to 83.08%, fiber quality factor, plant type factor, yield factor and disease index factor had the contribution rate of 28.45%, 15.50%, 12.07% and 8.87%, respectively.