Combining ability analysis in Indian mustard [Brassica juncea (L.) Czern & Coss.] involving Ogura CMS system
Abstract
Line × tester analysis was carried out to estimate combining ability of Ogura CMS based hybrids in Indian mustard [Brassica juncea (L.) Czern & Coss.]. For this, 50 hybrids were developed by crossing five Ogura CMS lines with ten restorers according to the Line x Tester mating design. A total of 65 genotypes including 50 hybrids and 15 parents were evaluated during Rabi, 2017-18. Analysis of variance revealed significant differences among lines and crosses for most of the traits. The value of σ2SCA/σ2GCA was found less than one, for most of the traits indicating a major role of non-additive gene action in the expression of characters. Line RH 0555-OA and tester IOR-12 were found to be good general combiners possessing highly significant and positive gca effects for seed yield and component traits. The cross RH 0630-OA × IOR-12 had expressed the highly significant and positive sca effects for seed yield per plant. Other crosses such as RH 8812-OA × IOR-3, RH 0749-OA × IOR-6, RH 0749-OA × IOR-22, RH 0749-OA × IOR-18 and RH 0630-OA × IOR-11 had exhibited significant sca effects for different yield related characters in Indian mustard.
Key words: GCA, SCA, Ogura CMS, Indian mustard
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.
