江西农业大学学报2025，Vol.47Issue(3)：618-629,12.DOI:10.3724/aauj.2025053
我国南方地区参薯表型性状多样性分析
Analysis of phenotypic character diversity of Dioscorea alata L.in southern China
摘要
Abstract
[Objective]This study aims to analyze the genetic diversity of Dioscorea alata L.resources in southern China,thus providing a theoretical basis for their innovative utilization and variety breeding.[Method]Twenty Dioscorea alata L.germplasm resources from southern China were subjected to biological identification and phenotypic diversity analysis.Principal component analysis and cluster analysis were conducted to systematically investigate the phenotypic differences and genetic variations among these resources.[Result](1)The germplasm resources of the 20 samples exhibited abundant variations.The Shannon index for qualitative traits ranged from 0.325 to 1.280,with root hair distribution,tuber shape,and tuber color showing the highest diversity.The coefficient of variation for quantitative traits ranged from 11.96%to 163.80%,with tuber diameter exhibiting the highest variation(163.80%)and leaf SPAD value showing the lowest variation(11.96%).(2)Cluster analysis based on phenotypic traits revealed that with an Euclidean distance of 20,the germplasm resources were divided into two clusters,with Lijiang Purple yam forming a seperate cluster.With an Euclidean distance of 15,the resources were further divided into five clusters.[Conclusion]Underground tuber traits are the primary factors influencing the diversity of Dioscorea alata L.,with tuber diameter contributing the most to phenotypic variation.Comprehensive evaluation shows that Lijiang Purple yam,Ganziyu No.3,and Ganbaiyu No.2 exhibited outstanding phenotypic traits,demonstrating significant potential for promotional application.关键词
参薯/表型性状/聚类分析/主成分分析Key words
Dioscorea alata L./phenotypic trait/cluster analysis/principal component analysis分类
农业科技引用本文复制引用
汪生林,崔佳瑞,单楠,李子豪,黄英金,周庆红,孙静宇..我国南方地区参薯表型性状多样性分析[J].江西农业大学学报,2025,47(3):618-629,12.基金项目
国家自然科学基金项目(32460767)和江西省重点研发计划项目(20232BBF60007)Project supported by the National Natural Science Foundation of China(32460767)and the Key Research and De-velopment Project of Jiangxi Province(20232BBF60007) （32460767）
