Combining ability analysis for seed yield and component traits in Indian mustard [Brassica juncea (L.) Czern & Coss.]
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.
It is certified that:
- The corresponding author is fully responsible for any disputes arising due to the publication of his/her manuscript.
- The article has been seen by all the authors who are satisfied with its form and content.
- The sequence of names of authors in the by-line is as per their relative contribution to this experiment, giving due credit to all scientists who made notable contribution to it.
- All the authors fully understand that inclusion of any other co-authors or exclusion of any co-authors is not possible once the article has been submitted to the journal.
- The corresponding author takes full responsibility for this article.
- The address of the organization where the research was conducted is given.
- The article is exclusive for this journal, and the results reported here have not been sent (and will not be sent during its consideration by this journal) for publication in any other journal.
- Authors agree to abide by the objective comments of referees and do agree to modify the article into a short note as per the recommendation, for publication in the Electronic Journal of Plant Breeding.
- If published in Electronic Journal of Plant Breeding, the copyright of this article would vest with the Indian Society of Plant Breeders, who will have the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in it, and neither we nor our legal heirs will have any claims on royalty.