ஜர்னல் ஆஃப் ஜெனிடிக்ஸ் அண்ட் ஜீனோம்ஸ்

Quantitative Trait Inheritance and Genetic Variability on Pod and Seed-Related Traits in Peanut Recombinant Inbred Line Population

Abstract

Liu Li-feng1, Yang Xin-Lei1, Liu Kaige1, He Mei-Jing1, Cui Shun-Li1, Mu Guo-Jun1,Wang Liang1, Li Li1, Yan Congcong1, Zhao Nannan1, Chen Yingjie1 and Addisu Getahun1,2,3*

The present study was conducted to predict genotypic variability, phenotypic variability, heritability, and genetic advance on pod and seed-related traits in cultivated peanut RIL population. Genetic variability is an important prerequisite for selection using certain genetic parameters viz: genotypic variation, heritability and genetic advance.

The trait pod length, number of pods per plant, pod weight per plant, multi-seedpods per plant had high genotypic coefficient of variation. The highest narrow sense heritability was recorded in seed length, pod length by width, and pod thickness traits, meanwhile, seed length, seed length by width, number of pods per plant, shelling percentage, pod thickness, thickness of pod shells, seed weight per plant, seed thickness, seed width, multiple seedpods per plant, and pod weight per plant traits had high broad sense heritability. The highest genetic advance as percent of mean had occurred in multiple seedpods per plant, number of pods per plant, pod weight per plant, seed weight per plant, thickness of pod shells, pod length by width, seed length by width, and seed length quantitative traits. The highest broad sense heritability values coupled with high genetic gain were estimated in multiple seedpods per plant, number of pods per plant, pod weight plant, seed weight per plant, thickness of pod shells, pod length by width, seed length by width. Therefore, relatively the present study used more pod and seed-related traits than the previous investigations. The present experiment had tried to estimate a good quantitative trait inheritance and genetic variability between recombinant inbred line populations; so far, our result suggested that superior breeding line selection was confidential for next breeding programs.