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FOREST RESOURCES WANAGEMENT ›› 2023, Vol. 0 ›› Issue (4): 107-114.doi: 10.13466/j.cnki.lyzygl.2023.04.013

• Scientific Research • Previous Articles     Next Articles

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

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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