Genetic variation, Heritability and Genetic Advance For Yield Components in Indian Mustard [Brassica juncea (L) Czern and Coss]
Keywords:
Brassica juncea (L.), Genetic variability and Heritability.Abstract
Twenty three variant strains/cultivars of Indian mustard were grown in Ballia (U.P., India) to estimate the presence of genetic variability, GCV and PCV, heritability broad sense and genetic advance. The predominantly often self pollinated Indian mustard gave high significant âFâ test values (ANOVA) for yield and other 11 characters viz. days to 50% flowering, number of primary branches, plant height (cm), days to maturity, number of siliquae per plant, siliqua length (cm), number of secondary branches, seeds per siliqua, biological yield, test weight and harvest index. The highest and lowest mean, range and C.D. were accounted for number of siliquae/plant and test-weight respectively. A slight PCV over GCV was noted for all attributes due to additional values of environmental influence in the expression of corresponding
character. Ten characters expressed more than 90 per cent heritability broad sense (h2 ) which exhibited to assbe.ss.s the extent of the character transmission among coming generations. The magnitude of heritability was influenced by presence of extent of variability between the two generations of population. A high heritability coupling with high genetic advance like siliquae per plant and biological yield would be prominent attributes to enhance the yield per plant at the time of selection of parents.
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