论文部分内容阅读
选取4个棉花栽培种的29份棉花品种/品系,利用分布在棉花26条染色体的67对SSR多态性引物进行标记基因型检测,共检测出341个等位基因变异,每对引物的等位位点数在2～9之间,平均为5.1个.29份棉花品种/品系的遗传相似系数在0.53～0.97之间,平均值为0.73.遗传相似系数为0.78时,可将29份材料分为陆地棉、海岛棉和二倍体栽培种3个大组.遗传相似系数为0.84时,可将22份陆地棉品种/品系分成7亚组,同时将二倍体栽培种的中棉和草棉各分为一组.本研究表明,棉花栽培种陆地棉、海岛棉、中棉和草棉种内遗传差异小,种间杂交渐渗系的培育是增加陆地棉遗传多样性的有效途径.
A total of 29 cotton cultivars / lines from 4 cotton cultivars were selected, and 67 pairs of SSR polymorphism primers distributed on 26 chromosomes of cotton were used to detect the genotypes of alleles, 341 alleles were detected, The number of loci was between 2 and 9 with an average of 5.1.The genetic similarity coefficients of 29 cotton cultivars / lines ranged from 0.53 to 0.97, with an average of 0.73.When the genetic similarity coefficient was 0.78, 29 material points Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense, Gossypium barbadense and Gossypium barbadense.With the genetic similarity coefficient of 0.84, 22 cultivars of Gossypium hirsutum were divided into 7 subgroups, The results showed that the genetic diversity among cotton cultivars (G. hirsutum L., G. matsuyana L.), G. mongolica and G. mongolica was small, and the cultivation of interspecific hybrid introgression lines was an effective way to increase the genetic diversity of upland cotton.