Analysis of genetic components and other genetic parameters for seed yield and its contributing traits in Indian mustard, Brassica Juncea (L) Czern and Coss Meena Jitendra*, Harsha, Pant Usha Division of Genetics and Plant Breeding, GB Pant University of Agriculture and Technology, Pantnagar-263145, Uttarakhand, India *Email for correspondence: jitendrakrmeena89@gmail.com
Online published on 25 July, 2018. Abstract An experiment was conducted to know the inheritance pattern of seed yield and its components in a 15 × 15 half diallel cross set of Indian mustard, Brassica juncea (L) Czern and Coss. The estimates of components of variance were significant for all the characters. The additive gene action was predominant for the expression of characters viz days to 50 per cent flowering, number of seeds per siliqua and oil content whereas non-additive gene action was more significant for expression of remaining characters. Predictability ratio was highest for oil content (25.622) followed by number of seeds per siliqua (2.471) and days to 50 per cent flowering (1.591). Average degree of dominance showed partial dominance for days to flowering (0.793), number of seeds per siliqua (0.636) and oil content (0.197) and over dominance for remaining traits. The complete degree of dominance was not shown by any character. The genetic component studies revealed that both additive and non-additive gene action play their role in inheritance of various characters in Indian mustard. Top Keywords Brassica juncea, seed yield, gene action, predictability ratio, degree of dominance. Top |