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通过对来自3个栽培种(陆地棉、海岛棉和亚洲棉)的92份棉花资源的9个性状的调查和分析,变异系数、特异材料百分比和Shannon-Weaver多样性值均表明该群体蕴含较丰富的遗传变异;利用软件NTSYS-pc,采用类平均法(UPGMA)对相似系数矩阵和遗传距离矩阵进行聚类分析,结果表明品种间的遗传关系与品种所属的种及系谱吻合性较高;利用软件QGAStation筛选出核心材料22份,方差差异百分率、均值差异百分率、极差符合率和变异系数变化率相关统计学指标显示核心材料组遗传多样性与原群体基本一致。基于表型的遗传多样性分析及核心材料的筛选将为后续的育种工作和基础研究提供重要的参考信息。
Through the investigation and analysis of nine traits of 92 cotton resources from three cultivars (Upland, Sea Island and Asian cotton), the coefficient of variation, percentage of specific materials and Shannon-Weaver diversity values all indicate that the population contains more The results showed that the genetic relationship among cultivars was in good agreement with the species and pedigree of cultivars. The QGAStation software was used to screen out 22 core materials. The variance of variance, the percentage of mean difference, the range of poor coincidence and the rate of change of coefficient of variation showed that the genetic diversity of the core material group was basically the same as that of the original population. Phenotypic analysis of genetic diversity and selection of core material will provide important reference information for subsequent breeding and basic research.