Phenotypic Diversity Analysis of Related Traits between Pod and Seed of 232 Peanut Germplasm Resources
In order to understand the genetic diversity of peanut germplasm resources and provide theoretical basis for the effective utilization of peanut variety resources and the breeding of new peanut varieties,phenotypic diversity analysis,coefficient of variation analysis,genetic parameter analysis,correlation analysis,and cluster analysis were carried out on 232 natural populations of peanut germ-plasm resources using the survey data of pod and seed related traits.The results showed that the ge-netic diversity index of 9 classification traits and 13 agronomic traits related to peanut pod and seed ranged from 0.44 to 1.34 and 1.81 to 2.10,respectively,with an average value of 0.95 and 2.03.The variation of 13 agronomic traits ranged from 8.02％to 36.78％,with an average of 18.55％,reaching a mod-erate degree of variation,indicating that there was relatively rich genetic diversity in this population.Overall,the generalized heritability of 13 agronomic traits varied greatly,ranging from 31.24％to 85.54％.The gener-alized heritability of pod length,width and thickness was above 80％.The relative genetic progress of 100-fruit mass and 100-kernel mass was 35.94％and 39.27％,respectively,and the available genetic increment was 56.958 and 21.841.The results of correlation analysis showed that the agronomic traits influenced and re-stricted each other,and the nine agronomic traits of pod length,pod width,pod thickness,fruit waist,ker-nel length,kernel width,yield per plant,100-fruit mass,and 100-kernel mass were significantly posi-tively correlated with each other.By systematic cluster analysis,232 peanut germplasm resources were divided into three categories at the square Euclidean distance of 12,and most traits were differ-ent among different groups.The above results indicated that there was rich genetic diversity among 232 peanut germplasm resources,and there was large space for character improvement.
万方数据
维普
