利用陆地棉置换系进行海岛棉主要性状基因的染色体定位

 利用海岛棉染色体置换陆地棉一对染色体或染色体臂的置换系,进行主要农艺性状、抗黄萎病性和纤维品质基因染色体定位。结果表明，海岛棉1号染色体可以增加株高；16、17、18、4号染色体携带降低铃数基因；22Lo、22Sh、16、11Sh、26Lo号染色体可以提高衣分；大部分染色体降低铃重。16、26Lo染色体可以增强抗黄萎病性。对纤维品质性状分析表明，14Sh、26Lo号染色体可以提高纤维长度；14Sh、15Sh号染色体可以提高强度；4号染色体可以降低麦克隆值；22Sh、16、22Lo、11Sh号染色体可以提高伸长率。推测这些染色体上可能具有对应性状的基因。

Gene Location of Main Traits in Specific Chromosome or Chromosome Arms of G. Barbadense by Using Chromosome Substitution Lines

It is very valuable to locate specific chromosome or chromosome arms with genes for agronomic traits, Verticilium wilt and fiber quality using chromosome substitution lines. The results reViewed that the chromosome 1 from 3 79 can increase plant height, chromosomes 16，and 26Lo, can improve Verticillium wilt resistance, chromosomes 16，17，18，and 4, reduced boll number per plant, and chromosomes 22Lo，22Sh，16，11Sh，26Lo, can increase lint percentage. Many chromosomes can reduce boll weight. For fiber quality performance, chromosomes 14Sh and 26Lo increased fiber length, chromosomes 14Sh,15Sh increased fiber strength; chromosome 4 reduced micronaire and chromosomes 22Sh,16,22Lo, as well as 11Sh increased elongation. The results provided information in trait performance related to substituted chromosomes or chromosome arms.