Genetic diversity analysis of agronomic traits of 101 pod pepper germ-plasm resources
YANG Senyao
LIU Yongpeng
JIA Shengfeng
DONG Xiaoyu
YANG Fan
MA Min
HOU Li
HAN Yanan
YAO Qiuju
Abstract：In order to explore the agronomic trait diversity of pod pepper germplasm resources and improve their utiliza-tion efficiency,this study used 101 pod pepper germplasm resources as materials to conduct differential analysis,correla-tion analysis,principal component analysis,and cluster analysis of 9 agronomic traits.The results showed that the coeffi-cients of variation for 9 agronomic traits ranged from 11.47％to 23.61％,and the genetic diversity index varied between 1.43 and 2.07.Except for stem thickness,which was not significantly correlated with other agronomic traits,the other 8 agronomic traits were significantly or extremely significantly correlated with at least 1 other agronomic trait.Cluster analysis classified the 101 pod pepper germplasm resources into 5 major groups,with group Ⅴ only contained 1 germplasm resource.There were significant differences in effective branches,fruits number per plant,and single fruit mass between groups Ⅰ-Ⅳ.Principal component analysis extracted a total of 4 principal components,with a cumulative contribution rate of 75.331％.Based on the comprehensive score of principal components,10 excellent germplasm resources were selected,which can be used as basic materials for germplasm innovation and pod pepper breeding.
Keywords：Pod pepperGermplasm resourcesAgronomic traitGenetic diversity
Publication Date：2025-06-05
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 55-60 )