Vol. 11, Issue 12 (2022)

Author(s):
Lakki Sharma, Dr. AN Tikle and Ratnakar Pandey

Abstract:
The present investigation entitled “Exploitation of Genetic variability and trait association studies in Indian mustard (Brassica juncea L.)” was carried out during Rabi 2021-22 with three environments. Experimental material consisted of 20 Indian mustard genotypes. The experiment was conducted in Randomized Complete Block Design, using recommended agronomic practices for normal growth of crop. Field experiment conducted at the village Naugaya, Bharatpur, Rajasthan during Rabi season 2017-18 and 2018-19. The mean, range, phenotypic, genotypic and environmental variance, genotypic and phenotypic coefficient of variation, heritability in broad sense and genetic advance were calculated. Path coefficient analysis was carried out using correlation coefficients to know the yield-contributing traits having true associations with seed yield. Improvement in seed yield can be achieved by selection using the correlation and path analysis data generated in this study. 1000-seed weight was positively correlated with siliqua length. 1000-seed weight and total siliquae/plant also had higher phenotypic and genotypic direct effects on seed yield/plant, revealing that indirect selection for these traits would be effective in improving seed yield. The high heritability coupled with high genetic advance for 1000-seed weight would also be of great use for indirect selection for improvement in seed yield. The material used in the study is of diverse nature and can be used in the breeding programme for development of improved genotypes in mustard.