Estimation of Genetic Parameters and Character Association in Indian Mustard (Brassica juncea L.)

Abstract

An experiment was undertaken to examine the yield potential and genetic parameters of Indian mustard through yield and yield contributing traits in the Bundelkhand region of Uttar Pradesh. Twenty-five mustard genotypes were assessed for nine agro-morphological traits during Rabi 2018-19. Phenotypic data were subjected to analysis of variance, pairwise mean comparison, genetic parameter studies, and association analysis using R-Packages 1.5,  STAR 2.0.1, and SPAR 2.0 Package. The evaluated germplasm had ample genetic variability for studied traits and trait-specific genotypes have been identified. The trait seed yield showed higher heritability coupled with higher genetic advance as percent of the mean (99% and 70.41) followed by the number of SB (98% and 65.57) and TSW (100% and 62.50) are more authentic for selecting the leading genotype. The association studies revealed a significant and positive correlation of seed yield with the number of siliquae per plant (0.346), siliquae length (0.333), and 1000 seed-weight (0.237) at both genotypic and phenotypic levels. The lines Maya, RH 119, IC 571649, Durgamini, and IC 447111 showed better performance and produced higher seed yields in the Bundelkhand region. These identified genotypes having desirable trait combinations may be utilized for creating variability to develop location-specific cultivars.