Genetic divergence in Indian mustard (Brassica juncea L. Czern. & Coss.

Authors

  • Nupur Malviya N. D. University of Agriculture and Technology, Kumarganj, Ayodhya-224229 (UP), India
  • K Kumar N. D. University of Agriculture and Technology, Kumarganj, Ayodhya-224229 (UP), India
  • DK Upadhyay Rani Lakshmi Bai Central Agricultural University, Jhansi-284003 (UP), India

DOI:

https://doi.org/10.3329/bjb.v50i1.52669

Keywords:

D2 Statistics, Genetic divergence, Indian mustard

Abstract

Genetic divergence was carried out in 15 Indian mustard varieties/strains, 4 testers and 60 F1s developed by crossing 15 lines with 4 testers. Based on D2 values between the pair of genotypes, 19 parental lines were grouped into five clusters in E1 (timely sown) & E2 (late sown) condition. In E1, cluster II was the largest having 8 genotypes followed by cluster I and IV with four genotypes. Whereas, in E2 cluster I was largest having 9 genotypes followed by cluster V which had four genotypes. In E1 the intra-cluster distance ranged from 0.00 (cluster V) to 581.64 (cluster IV). Cluster IV and V were the most diverse with inter-cluster distance of 7169.70 followed by cluster II and V (4829.11). Whereas, in E2 the intra-cluster distance ranged from 0.00 (cluster IV) to 296.03 (cluster V). Clusters IV and V were the most diverse with inter-cluster distance of 1894.16. The 60 F1s were grouped into eight clusters in E1 and E2. In E1, the maximum number of genotypes were grouped in clusters I and VI (12) and the intra-cluster distance ranged from 111.59 to 318.07. The maximum inter-cluster distance was observed between cluster IV and VIII (3554.76). Whereas, in E2 maximum number of genotypes grouped in cluster III (15) and intra-cluster distance ranged from 0.00 to 351.31. The maximum inter-cluster distance (D2) was observed between cluster V and VIII (43829.30).

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Published

2021-03-27

How to Cite

Malviya, N., Kumar, K., & Upadhyay, D. (2021). Genetic divergence in Indian mustard (Brassica juncea L. Czern. & Coss. Bangladesh Journal of Botany, 50(1), 37–44. https://doi.org/10.3329/bjb.v50i1.52669

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