低酚棉品种资源产量、纤维品质性状鉴定和SSR分析

本研究调查了55份低酚棉品种资源的10个产量性状和纤维品质性状,并利用SSR技术分析了遗传多样性。主成分分析显示,前6个主成分解释了总共92.762%的表型变异;基于产量和纤维品质性状进行聚类,供试材料被划分为4类,第一类材料整体表现性状优良;基于SSR分子标记进行聚类,供试材料被划分为5类,第二、四、五类材料整体表现优良。结合产量和纤维品质性状、SSR聚类分析结果和田间表现,鉴定出可供改良的低酚棉育种资源6个:‘中无151’、‘洛克特22’、‘皖无1号’、‘豫无1309’、‘中无831’和‘湘C70’。

Evaluation of glandless cotton germplasm resources based on yield and fibre quality traits and SSR analysis

In this paper,fifty-five glandless cotton breeding resources were analyzed by using 10 yield and fibre quality traits and SSR(Simple sequence repeats) markers.Principal components analysis(PCA) showed that the first six principal components(PCs) explained a total of 92.762% of the phenotypic variation.55 glandless cotton breeding resources were clustered into 4 groups based on the yield and fibre quality traits.The germplasm resources belonging to the first group showed the best traits.55 glandless cotton breeding resources were clustered 5 groups based on SSR markers.The germplasm resources belonging to the secondly,fourthly and fifthly groups were excellent in the investigated traits.’Zhongwu151’,’Luokete22’,’Wanwu1hao’,’Yuwu1309’,’Zhongwu831’ and ’XiangC70’ were selected based on all the traits and will be utilized in the glandless cotton breeding.