Genetic Evaluation of F₂, F₃ and Biparent Crosses (Bip) in Mustard (Brassica juncea. L)

The study was carried out to determine the nature and magnitude of genetic variability during rabi 2012–2013 in Randomised Complete Block Design with two replications. The comparision of mean and range for different characters between BIP, F₂ and F₃ indicated that mean value of BIP were higher than the corresponding mean value in F₃ and F₂ for all the characters except days to maturity and days to first flower in C-II and C-III. Whereas in C-I mean value of BIP were higher than the corresponding mean value in F₂ and F₃ for plant height, number of branches per plant and seed yield per plant. Higher GCV and PCV in BIP as compared to F₃ and F₂ were observed for number of siliqua per plant and seed yield per plant in all the crosses and also for number of primary branches per plant in C-III. Heritability estimates in BIP and F₃ was higher than F₂ for all the traits in all the crosses. High heritability with high genetic advance was recorded for number of siliqua per plant in all the generations of three crosses and for plant height in BIP of C-I and C-III, F₂ and F₃ of C-II.