Assessment of genetic diversity based on agro-morphological traits in Indian mustard [Brassica juncea (L.) Czern. &Coss.] germplasm

DOI: 10.37992/2022.1303.115

  • Bharath Kumar Margam, Nihar Ranjan Chakraborty and Abhishek Sadhu

Abstract

In the present study, a set of 36 Indian mustard genotypes were evaluated in three replications for twelve agro-morphological traits. D2 analysis was done to study the diversity pattern which enabled the grouping of genotypes into 11 clusters. Cluster I was the largest (D2=7.53) comprising of 20 genotypes followed by cluster II (D2=7.20) of 7 genotypes, while other 9 clusters contained one genotype each. Estimates of average inter cluster distance revealed that clusters IX and XI were most divergent (D2=118.49) followed by clusters V and XI (D2=88.48). Hence, crossing between genotypes Pusa Agrani  Rohini (cluster IX  cluster XI); PM-28  Rohini (cluster V  cluster XI) may yields a considerable amount of heterosis in F1 generation. Days to maturity (31.9 %) had the highest contribution, followed by seed yield per plant (25.4 %), days to 50% flowering (13.33 %), beak length (7.30 %) and 1000 seed weight (6.67 %) towards the observed genetic diversity. Selection for divergent parents based on concerned traits could enhance the development of transgressive segregants with increased vigor in Indian mustard.

Keywords: Indian mustard, Genetic divergence, D2 analysis.

Published
30-09-2022
How to Cite
and Abhishek Sadhu, B. K. M. (2022). <p><strong>Assessment of genetic diversity based on agro-morphological traits in Indian mustard [<em>Brassica juncea</em> (L.) Czern. &amp;Coss.] germplasm</strong></p&gt;. Electronic Journal of Plant Breeding, 13(3), 1019-1023. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4274
Section
Research Article