Combining ability analysis in Indian mustard [Brassica juncea (L.) Czern & Coss.] involving Ogura CMS system

  • Neeraj Kumar,
  • Ram Avtar and Vivek K. Singh

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

Published
30-09-2021
How to Cite
Kumar, N., & Vivek K. Singh, R. A. and. (2021). Combining ability analysis in Indian mustard [Brassica juncea (L.) Czern & Coss.] involving Ogura CMS system. Electronic Journal of Plant Breeding, 12(3), 667-672. Retrieved from http://ejplantbreeding.org/index.php/EJPB/article/view/3638
Section
Research Article