甘肃省南瓜种质资源遗传多样性分析  

Genetic Diversity Analysis of Cucurbita moschata Germplasm Resources in Gansu Province

作　　者：王美丽 郑荣 许辉欣 王兴荣[2] WANG Mei-li;ZHENG Rong;XU Hui-xin;WANG Xing-rong(Jiuquan Academy of Agricultural Sciences,Jiuquan 735000,China;Gansu Academy of Agricultural Sciences,Lanzhou 730000,China)

机构地区：[1]酒泉市农业科学研究院,甘肃酒泉735000 [2]甘肃省农业科学院,甘肃兰州730000

出　　处：《江西农业学报》2024年第9期19-25,34,共8页Acta Agriculturae Jiangxi

基　　金：甘肃省农业农村厅科技项目“甘肃省农作物种质资源库保护利用”(GNKJ-2021-44)。

摘　　要：以甘肃省36份南瓜种质资源为供试材料,运用多样性分析、主成分分析、综合评价及聚类分析等方法,对南瓜的34个农艺性状进行了遗传多样性分析,旨在为南瓜种质资源的创制及品种改良提供理论依据。结果表明:19个质量性状的多样性指数的变化范围为0.591~1.960;15个数量性状的多样性指数的变化范围为1.541~2.021,变异系数的变化范围为15.6%~57.7%,40%的性状之间存在显著或极显著的相关性;选取特征值大于1.00的5个主成分进行评价,累计贡献率达78.644%;36份种质的综合得分在0.56~3.39,综合得分排前3位的种质资源为N01、N10、N14;36份南瓜种质资源分可为5个类群,各类群间表型差异明显。Using 36 pumpkin germplasm resources as materials,this paper conducted a genetic diversity analysis of 34 agronomic traits by diversity analysis,principal component analysis,comprehensive evaluation and cluster analysis,aiming to provide a theoretical basis for the creation of pumpkin germplasm resources and the improvement of pumpkin cultivars.The results showed that the diversity index of 19 quality traits ranged from 0.591 to 1.960,and the diversity index of 15 quantitative traits ranged from 1.541 to 2.201.The variation coefficient ranged from 15.6%to 57.7%.There were significant or highly significant correlations among 40%of the traits.Five principal components with eigenvalues above 1.00 were chosen for evaluation,and the cumulative contribution rate was 78.644%.The comprehensive scores of the 36 germplasms ranged from 0.56 to 3.39,and the top 3 germplasm resources were N01,N10 and N14.These 36 pumpkin germplasm resources were classified into five clusters,and phenotypic differences were obvious among the groups.

关 键 词：南瓜 种质资源 农艺性状 多样性分析 主成分分析 聚类分析 

分 类 号：S642.1[农业科学—蔬菜学]