河南农业科学 ›› 2022, Vol. 51 ›› Issue (12): 110-121.DOI: 10.15933/j.cnki.1004-3268.2022.12.013

所属专题: 种质资源评价与筛选

• 园艺 • 上一篇    下一篇

芍药不同品种群种质资源表型多样性分析

王慧娟1,王二强2,符真珠1,李艳敏1,王晓晖2,王占营2,袁欣1,高杰1,王利民1,张和臣1
  

  1. (1.河南省农业科学院园艺研究所,河南 郑州 450002;2.洛阳农林科学院,河南 洛阳 471023)
  • 收稿日期:2022-09-10 出版日期:2022-12-15 发布日期:2023-01-17
  • 通讯作者: 张和臣(1979-),男,河南濮阳人,副研究员,博士,主要从事花瓣呈色机理及园林植物遗传育种研究。E-mail:zhc5128@126.com
  • 作者简介:王慧娟(1976-),女,河南濮阳人,副研究员,硕士,主要从事园林植物遗传育种研究。E-mail:wanghuijuan‑7618@163.com
  • 基金资助:
    河南省农业科学院基础性科研项目(2022JC04);河南省农业科学院自主创新项目(2022ZC23)

Phenotypic Diversity Analysis of Different Cultivars Groups of Herbaceous Peony Germplasm Resources

WANG Huijuan1,WANG Erqiang2,FU Zhenzhu1,LI Yanmin1,WANG Xiaohui2,WANG Zhanying2,YUAN Xin1,GAO Jie1,WANG Limin1,ZHANG Hechen1   

  1. (1.Horticulture Research Institute,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;2.Luoyang Academy of Agriculture and Forestry Sciences,Luoyang 471023,China)
  • Received:2022-09-10 Published:2022-12-15 Online:2023-01-17

摘要: 以109份不同品种群的芍药种质资源为研究材料,通过方差分析、变异系数和多样性指数分析、相关性分析、主成分及聚类分析,对38个表型性状(数量多态性状4个、定性多态性状27个、二元性状7个)进行多样性分析。结果表明:109份芍药种质资源变异程度较高,遗传多样性丰富。其中,数量性状的变异系数均值为17.59%,株高的变异系数最大(24.71%),多样性指数均值为2.00,同样以株高的为最大值(2.10);质量性状的多样性指数(1.06)低于数量性状(2.00),花色的多样性指数最高(1.82),花型次之(1.67)。相关性及主成分分析结果显示,性状间呈极显著相关和显著相关的分别有67对和53对,14个主成分的累计贡献率为69.905%,株高、株型、柱头大小、花期、茎态等是影响芍药表型差异的主要性状。采用层次聚类将芍药种质资源分为4类,株高、株型、花色、叶缘缺刻等表型性状与品种聚类的相关性较大。其中前3类以国内传统中国芍药品种为主;国外引种的涵盖3个品种群的芍药种质资源单独聚为一类,株型多半开张,茎秆粗壮,与国内传统种植品种的表型差异较大,反映了种源及长期育种目标的差异。

关键词: 芍药, 品种群, 表型性状, 遗传多样性, 主成分分析, 聚类分析

Abstract: 109 herbaceous peony germplasm resources from different cultivar groups were used to study the diversity of 38 phenotypic traits(4 quantitative traits,27 qualitative polymorphism traits and 7 qualitative binary traits)by the analysis of variance,coefficient of variation analysis,correlation analysis,principal component analysis and cluster analysis.The results showed that the phenotypic traits of 109 herbaceous peony germplasm resources had a high degree of variation and rich genetic diversity.Among them,the average variation coefficient of quantitative traits was 17.59%,with the largest variation coefficient for plant height(24.71%).The average Shannon‑Wiener index of quantitative traits was 2.00,and plant height had the maximum value(2.10).The average of Shannon‑wiener index in qualitative indexes(1.06)was less than that in quantitative traits,and the Shannon‑Wiener index of flower color was the highest(1.82),followed by that of flower type(1.67).The results of correlation and principal component analysis showed that there were 67 pairs of extremely significant correlation and 53 pairs of significant correlation among the characters. The cumulative contribution rate of first 14 principal components was 69.905%.Plant height,plant type,stigma size,flowering time and stem state were the main traits affecting the phenotypic differences of herbaceous peony. Hierarchical clustering divided herbaceous peony germplasm resources into four groups.Phenotypic traits such as plant height,plant type,flower color,and leaf margin sawtooth were closely related to variety clustering. Groups 1—3 were mainly traditional peony varieties of China.The herbaceous peony germplasm resources introduced from abroad belonged to three cultivars groups and clustered into one group alone,which had quite different phenotypic traits(thick stems and half‑opened plant types) from the traditional varieties of China.This clustering result reflected the difference of provenance and long‑term breeding objectives to a certain extent.

Key words: Herbaceous peony, Cultivars group, Phenotypic traits, Genetic diversity, Principal component analysis, Cluster analysis

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