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林业资源管理 ›› 2023›› Issue (4): 107-114.doi: 10.13466/j.cnki.lyzygl.2023.04.013

• 科学研究 • 上一篇    下一篇

贵州不同地区盐麸木表型性状遗传多样性分析

袁扬1(), 曾兵1,2, 王胤晨1(), 赵恬1, 邓梦青1, 杨玲1, 廖艳1   

  1. 1.贵州省畜牧兽医研究所,贵阳 550000
    2.西南大学动物科学技术学院,重庆 402460
  • 收稿日期:2023-06-25 修回日期:2023-07-12 出版日期:2023-08-28 发布日期:2023-10-16
  • 通讯作者: 王胤晨(1988-),四川阆中人,副研究员,硕士,主要研究方向:蜜源植物育种和蜜蜂学。Email:1007795901@qq.com
  • 作者简介:袁扬(1991-),四川达州人,助理研究员,硕士,主要研究方向:蜜源植物育种与中华蜜蜂养殖。Email:543802762@qq.com
  • 基金资助:
    五倍子树多倍体蜜源种质创制及品种选育(黔科合支撑[2019]2290号)

Genetic Diversity Analysis of Phenotypic Traits of Rhus chinensis in Different Regions of Guizhou Province

YUAN Yang1(), ZENG Bing1,2, WANG Yinchen1(), ZHAO Tian1, DENG Mengqing1, YANG Ling1, LIAO Yan1   

  1. 1. Guizhou Institute of Animal Husbandry and Veterinary,Guiyang 550000,China
    2. College of Animal Science and Technology,Southwest University,Chongqing 402460,China
  • Received:2023-06-25 Revised:2023-07-12 Online:2023-08-28 Published:2023-10-16

摘要:

盐麸木是重要的经济树种。采用野外调查的方法,对贵州省13个地区盐麸木的10个表型性状指标进行多样性和变异分析。结果表明,10个表型性状的Shannon-Weaver指数范围为1.16~2.02,平均数为1.88,其中叶缘锯齿数、地径、花序数多样性指数相对较高;遗传变异系数范围为10.72%~39.44%,平均数为25.80%,其中地径、冠幅、株高性状变异系数相对较大。相关性分析表明,株高、冠幅、地径和分枝数性状间两两均存在极显著正相关,花序数与叶缘锯齿数存在显著正相关。主成分分析将10个表型性状简化为4个主成分,累计贡献率为84.37%。贡献率较大的核心指标为地径、株高、小叶宽、叶形指数、小叶数和花序数。以10个性状为基础的聚类分析将13个地区的盐麸木群体分为4类,即:毕节和施秉地区盐麸木种质资源聚为1类,息烽盐麸木种质资源为单独1类,凯里和贵定盐麸木种质资源聚为1类,其余8个地区聚为1类。贵州省13个地区盐麸木种质资源遗传变异程度较高,其植株形态、叶片性状及花序遗传多样性丰富。

关键词: 盐麸木, 表型性状, 遗传多样性, 主成分分析, 聚类分析

Abstract:

Rhus chinensis is an important economic tree species.The diversity and variation of 10 phenotypic traits of Rhus chinensis in 13 regions of Guizhou Province were analyzed by field investigation.The results showed that the Shannon-Weaver index of 10 phenotypic traits ranged from 1.16 to 2.02,with an average of 1.88,and the diversity index was relatively high for leaf margin serration number,ground diameter and number of inflorescence.The genetic variation coefficient ranged from 10.72% to 39.44%,with an average of 25.80%.Among these traits,the genetic variation coefficient was relatively large for the traits of ground diameter,crown width,and plant height of Rhus chinensis.Correlation analysis showed that there was a significantly positive correlation between plant height,crown width,ground diameter and number of branching,and there was a significant positive correlation between inflorescence number and leaf margin serration number.Principal component analysis simplified 10 phenotypic traits into 4 principal components,with a cumulative contribution rate of 84.37%.The core traits with high contribution rate were ground diameter,plant height,leaf width,leaf shape index,leaflet number and inflorescence number.Cluster analysis revealed that Rhus chinensis populations from 13 regions were divided into four clusters based on 10 traits.Rhus chinensis germplasm resources in Bijie and Shibing were clustered into Class Ⅰ,Xifeng Rhus chinensis germplasm resources into Class Ⅱ,Kaili and Guiding Rhus chinensis germplasm resources into Class Ⅲ,and the remaining 8 areas into Class Ⅳ.In conclusion,the 13 regions of Guizhou Province exhibit a significant level of genetic variation in Rhus chinensis germplasm resources,and their plant morphology,leaf and inflorescence traits are rich in genetic diversity.

Key words: Rhus chinensis, phenotypic traits, genetic diversity, principal component analysis, cluster analysis

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