海南地方豇豆种质资源表型多样性分析  

Phenotypic Diversity Analysis of Local Cowpea Germplasms Collected from Hainan Province

作　　者：伍壮生[1] 吴月燕[1] 李雪峤[1] 王小娟[1] 高芳华[1] WU Zhuangsheng;WU Yueyan;LI Xueqiao;WANG Xiaojuan;GAO Fanghua(Vegetable Research Institute,Hainan Academy of Agricultural Sciences/Hainan Provincial Engineering Research Center for Melon and Vegetable Breeding/Hainan Key Laboratory of Vegetable Biology,Haikou 571100,China)

机构地区：[1]海南省农业科学院蔬菜研究所/海南省瓜菜育种工程技术研究中心/海南省蔬菜生物学重点实验室,海口571100

出　　处：《种子》2023年第11期9-15,共7页Seed

基　　金：海南省重大科技计划项目(ZDKJ2021010);海南省农业科学院省属科研院所技术创新项目(FW20230002);海南省农业科学院科技创新团队(HAAS2023TDYD04);国家大宗蔬菜产业体系(CARS-23-G55);第三次全国农作物种质资源普查与收集行动(111821301354052033)。

摘　　要：以收集的64份海南地方豇豆种质资源为研究对象,采用相关性分析、主成分分析和聚类分析,对22个主要表型性状进行多样性分析。结果表明,海南地方豇豆种质资源具有丰富的遗传多样性,各性状的变异系数为10.26%~66.71%,遗传多样性指数为0.31~3.28。22个表型性状间存在复杂的相关关系,其中,嫩荚重与嫩荚长、嫩荚宽的相关系数最高,分别为0.934和0.832。8个主成分的累积贡献率为78.6141%。聚类结果表明,在欧氏距离为6.49时,可将64份海南地方豇豆种质资源划分为七个类群,其中第Ⅰ类群综合性状最好,主要表现为嫩荚较长、较宽、嫩荚较重、豆粒较长,可用于高产品种的选育。The diversity analysis of 22 major phenotypic traits was performed by correlation analysis,principal component analysis and cluster analysis for 64 collected local cowpea germplasm resources in Hainan.The results showed that the local cowpea germplasm resources had rich genetic diversity,with coefficients of variation of 10.26%-66.71%and genetic diversity indices of 0.31-3.28 for each trait.Correlation analysis revealed complex correlations between 22 phenotypic traits,and the correlation coefficients of tender pod weight with tender pod length and tender pod width were the highest of 0.934 and 0.832,respectively.The cumulative contribution rate of the first eight principal components was 78.6141%.The results of cluster analysis showed that the 64 local cowpea germplasm resources in Hainan could be divided into 7 groups when the Euclidean distance was 6.49.The first group had the best comprehensive traits,mainly showing longer and wider tender pods,larger tender pod weight and longer seed,which could be used for the selection and breeding of high-yielding varieties.

关 键 词：豇豆 种质资源 表型性状 聚类分析 遗传多样性 

分 类 号：S643.4[农业科学—蔬菜学]