摘要
番茄种质资源的综合评价是番茄新品种选育的重要基础.研究基于31个表型性状对收集到的166份番茄种质资源材料进行遗传多样性分析、相关性分析、主成分分析、聚类分析和综合评价.结果表明:质量性状中遗传多样性指数最高的是熟性(1.248);数量性状中遗传多样性指数最高的是叶宽(2.072),变异系数最大的是单果重(55.21%).数量性状间存在不同程度的相关性且绝大部分为显著或极显著相关.提取的9个主成分累计贡献率达到71.96%.供试材料在欧氏距离为17.5处聚为六大类,相对于其他组群,第Ⅵ组群整体性状表现良好,是优良的种质资源.采用主成分分析和隶属函数相结合的方法,对供试番茄材料进行综合评价,其中编号为64的番茄综合评价值(D值)最高,综合性状最为优异,研究为进一步丰富宁夏番茄种质资源提供材料和理论依据.
The comprehensive evaluation of tomato germplasm resources is an important basis for the selection of new tomato varieties.In this study,166 tomato germplasm resources were collected for genetic diversity analysis,correlation analysis,principal component analysis,cluster analysis and comprehensive evaluation based on phenotypic traits.The results showed that the highest genetic diversity index in the quality traits was the maturity(1.248);the highest in the quantitative traits was leaf width(2.072),and the largest coefficient of variation was single fruit weight(55.21%).Most traits showed significant or extremely significant correlation with each other.The cumulative contribution rate of the nine principal components extracted reached 71.96%.The tested materials were clustered into 6 groups at an Euclidean distance of 17.5,compared with other groups,the Group VI performed well and were excellent germplasm resources.Comprehensive evaluation of the tested tomato materials by the combination of principal component analysis and membership functions showed that number 64 had the highest comprehensive evaluation value(D value)and the best comprehensive traits,which can be applied for production and breeding,and enrich the germplasm resources of tomatoes in Ningxia.
作者
刘珮君
王晓敏
李国花
郑福顺
赵宇飞
胡新华
付金军
高艳明
李建设
LIU Pei-jun;WANG Xiao-min;LI Guo-hua;ZHENG Fu-shun;ZHAO Yu-fei;HU Xin-hua;FU Jin-jun;GAO Yan-ming;LI Jian-she(School of Agriculture,Ningxia University,Yinchuan 750021,China;Ningxia Modern Facility Horticulture Engineering and Technology Research Center,Yinchuan 750021,China;Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia,Yinchuan 750021,China;Ningxia Facility Horticulture(Ningxia University)Technology Innovation Center,Yinchuan 750021,China;Ningxia Jufeng Seedlings Limited Liability Company,Yinchuan 750021,China)
出处
《云南大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第4期792-803,共12页
Journal of Yunnan University(Natural Sciences Edition)
基金
宁夏回族自治区农业育种专项(NXNYYZ20150303).
关键词
番茄
种质资源
主成分分析
聚类分析
隶属函数
tomato
germplasm resources
principal component analysis
cluster analysis
membership function
