Combining ability analysis for seed yield and component traits in Indian mustard [Brassica juncea (L.) Czern & Coss.]

  • Gideon J. Synrem*, N. R. Rangare1, Anil Sujeet Kumar and Ibadaiahun Myrthong2
Keywords: Indian mustard, general combining ability, specific combining ability and traits.


Combining ability of eight quantitative traits was studied in 12 lines, 4 testers and 48 F1’s in Line x Tester mating design to know the inheritance pattern of yield attributes of Indian mustard [Brassica juncea (L.) Czern & Coss].  The estimates of gca and sca variances showed the preponderance of non-additive gene action for all the traits studied. Data revealed that variances due Line x Tester effect were significant for seed yield and all the traits studied. Among the lines and testers, good general combining parents BASANTI, CS 54, VARUNA, DURGAMANI, GM 1 and PM 67 exhibited desirable negative and highly significant gca effect for days to 50% flowering and days to maturity and the parents RL-1359, KRISHNA, RH-819 and JM-2 were good general combiners as they showed positive and highly significant gca effect for seed yield plant-1, plant height, primary branches plant-1, secondary branches plant-1, number of seeds siliqua-1, length of siliqua and days to maturity indicating the presence of additive gene action or additive x additive interaction effects. Hybrids RL 1359 x JM 2, KRISHNA x JM 2, GM 2 x JM 2 and CS 54 X LAXMI exhibited significant and positive specific combining ability effects for seed yield plant-1, days to 50 % flowering,  secondary branches plant-1 and number of seeds siliqua-1. However, on the basis of per se performance and significant specific combining ability effect for seed yield plant-1 hybrids RL 1359 x JM 2 and KRISHNA x JM 2 were considered to be most promising for further exploitation in breeding programme.


How to Cite
Sujeet Kumar and Ibadaiahun Myrthong2G. J. S. N. R. R. A. (2015). Combining ability analysis for seed yield and component traits in Indian mustard [Brassica juncea (L.) Czern & Coss.]. Electronic Journal of Plant Breeding, 6(2), 445-453. Retrieved from
Research Article