|Table of Contents|

Analysis of Genetic Diversity of Paspalum dilatatum Germplasms Based on Phenotypic Traits

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年08
Page:
60-66
Research Field:
Publishing date:

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Title:
Analysis of Genetic Diversity of Paspalum dilatatum Germplasms Based on Phenotypic Traits
Author(s):
HUANG Lijuan1TANG Huajiang1ZHAO Lili12WANG Puchang3SONG Gaoxiang1
(1.College of Animal Science,Guizhou University,Guiyang,Guizhou 550025;2.The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education),Guiyang,Guizhou 550025;3.Guizhou Prataculture Institute,Guiyang,Guizhou 550006)
Keywords:
Paspalum dilatatumgenetic diversityphenotypic traitprincipal component analysiscluster analysis
PACS:
-
DOI:
10.11937/bfyy.20191787
Abstract:
To reveal the genetic variations of six Paspalum dilatatum germplasms derived from different regions,11 phenotypic traits.The variation coefficient and Shannon-Weaver index were calculated for each phenotypic trait,and then principal component analysis and cluster analysis were also conducted.The results showed that the average variation coefficient of 11 phenotypic traits was 38.65%,and the variation coefficient of internode length growth rate,internode length/stem diameter ratio,fresh mass and dry mass were higher than 50%.The Shannon-Weaver index was the lowest in plant height and highest in growth rate.Plant height,was hightly significant correlation with stem diameter and leaf width,the correlation coefficients were 0.961 and 0.921 (P<0.01),respectively.The fresh mass′ correlation coefficients of plant height and stem diameter were 0.852 and 0.869,which showing a significant correlation (P<0.05).However,dry mass was significant correlation with plant height (P<0.05),and hightly significant correlation with stem diameter and fresh mass (P<0.01),the correlation coefficients were 0.861,0.925,0.971,respectively.The cumulative contribution rate of the first three principal components was 95.24%,plant height,leaf length,fresh mass and dry mass were main contributors of these three principal components,and they could be identified as an proxy for comprehensive evaluation.The cluster analysis showed that the six germplasms could be

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Last Update: 2020-07-08