种子2025，Vol.44Issue(12)：8-15,8.DOI:10.16590/j.cnki.1001-4705.2025.12.008
基于表型性状和SSR标记的红芯薯种质资源遗传多样性分析
Genetic Diversity Analysis of Red-Fleshed Sweet Potato Germplasm Resources Based on Phenotypic Traits and SSR Markers
摘要
Abstract
In order to evaluate the genetic diversity of red-fleshed sweet potato(Ipomoea batatas(L.)Lam.)germplasm resources,41 collected and preserved germplasm resources were analyzed based on 19 phenotypic traits and 35 pairs of SSR markers.The results showed that the genetic diversity index of phenotypic traits ranged from 0.115 to 2.039.Among these traits,the ratio of medium-large tuber-sand the yield per 667 m2 exhibited the highest indices.Additionally,the genetic diversity index of quantitative traits is significantly higher than that of qualitative traits.A total of 525 polymorphic alleles were detected by SSR marker analysis.The genetic similarity coefficient ranged from 0.563 8 to 0.859 0,with an average of 0.660 0,indicating that the germplasm resources of red-fleshed sweet po-tato had rich genetic diversity.Both phenotypic trait clustering(with a Euclidean distance of 20)and SSR molecular marker clustering(with a genetic distance of 0.64)were classified into 4 major groups.However,the classification results of the 2 were inconsistent.Phenotypic trait clustering could not be associated with parents or geographical origin,while SSR marker clustering indicated that lines with the same parents tended to cluster into the same group.关键词
红芯薯/表型性状/SSR标记/聚类分析/遗传多样性Key words
red-fleshed sweet potato/phenotypic traits/SSR markers/cluster analysis/genetic diversity分类
农业科技引用本文复制引用
邓仁菊,罗密,张舟琼,尹旺,付梅,吴巧玉,杨航,宋吉轩..基于表型性状和SSR标记的红芯薯种质资源遗传多样性分析[J].种子,2025,44(12):8-15,8.基金项目
贵州省科技计划项目"红芯薯种质资源创新及其肉色调控关键基因发掘与利用研究"(黔科合支撑[2023]一般024) （黔科合支撑[2023]一般024）
贵州省科技计划项目"基于IbNAC29基因过表达创制高品质红芯薯新材料的研究"(黔科合基础MS[2025]305) （黔科合基础MS[2025]305）
贵州省育种科研基础平台创新能力建设(黔科合服企[2022]014) （黔科合服企[2022]014）
