牡丹96个品种表型多样性分析与观赏性综合评价  

Phenotypic Diversity Analysis and Ornamental Comprehensive Evaluation of Ninety-six Tree Peony Cultivars Based on Landscape Application

作　　者：智慧 杨菁菁 罗建让 ZHI Hui;YANG Jingjing;LUO Jianrang(College of Landscape Architecture and Art,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学风景园林艺术学院,陕西杨凌712100

出　　处：《园艺学报》2025年第3期635-645,共11页Acta Horticulturae Sinica

基　　金：国家自然科学基金项目(32271950);上海辰山植物园上海市资源植物功能基因组学重点实验室开放课题项目(PFGR202301)。

摘　　要：以西北农林科技大学种植的96个牡丹品种为研究对象,采用表型多样性分析、相关性分析、聚类分析和主成分分析等方法对其长势、新生枝长度及花期等表型进行多样性分析与观赏性综合评价。结果表明:15个表型性状的多样性指数范围在0.56~2.03之间,变异系数11.84%~53.82%,花径的表型多样性指数最高,单株着花数的变异系数最大;植株高度、长势、花径、新生枝粗度和群体花期与其他性状存在极显著相关关系;聚类分析将96个牡丹品种分为三大类群,可分别应用于不同园林类型;主成分分析将表型性状因子简化为5个主成分,累计贡献率达64.69%,新生枝粗度、植株高度、群体花期和单株着花数是牡丹表型变异的主要因素;96份牡丹品种以综合得分排序,前10名的得分范围在0.66~1.18之间,筛选出‘玉板白’‘岛锦’‘海黄’‘黄冠’‘多花罗汉’等综合性状表现优异的品种。In this study,ninety-six tree peony cultivars planted in Northwest A&F University were selected as the research objects.Phenotypic diversity analysis,correlation analysis,cluster analysis and principal component analysis were used to analyze the phenotypic diversity analysis and ornamental comprehensive evaluation of tree peony growth,new branch length and flowering time.The results showed that the diversity index of 15 phenotypic traits ranged from 0.56 to 2.03,and the coefficient of variation ranged from 11.84%to 53.82%.The phenotypic diversity of flower diameter was the highest,and the coefficient of variation of flower number per plant was the highest.Plant height,growth,flower diameter,new branch thickness and population flowering time were significantly correlated with other traits;Ninety-six tree peony varieties were divided into three groups by cluster analysis,and different groups corresponded to different types of garden applications.Principal component analysis simplified phenotypic trait factors into five principal components,with a cumulative contribution rate of 64.69%.New branch thickness,plant height,population flowering time and number of flowers per plant were the main factors of phenotypic variation of tree peony.The ninety-six tree peony varieties were sorted by comprehensive scores,and the top 10 cultivars had scores ranging from 0.66 to 1.18,and the cultivars with excellent comprehensive traits such as‘Yubanbai’‘Shima Nishiki’‘High Noon’‘Okan’and‘Duohua Luohan’were selected according to the comprehensive scores.

关 键 词：牡丹 种质资源 表型性状 多样性 综合评价 

分 类 号：S685.11[农业科学—观赏园艺]