Year: 2019 | Month: June | Volume 12 | Issue 2
Combining Ability Analysis for Seed Yield and its Contributing Traits in Indian Mustard [Brassica juncea (L.) Czern & Coss.]
DOI:10.30954/0974-1712.06.2019.2
Abstract:
A set of 10 × 10 diallel crosses (excluding reciprocals) of Indian mustard along with their parents were evaluated to estimate general and specific combining ability of parents and crosses, respectively. The analysis of variance for combining ability revealed that variance due to gca was significant for all the characters except lenoleic acid and erucic acid. Whereas, variance due to sca was significant for all the traits except plant height, lenoleic acid and erucic acid. Magnitude of variance components of sca were higher than gca (gca/sca) for all the traits except plant height, oleic acid and erucic acid indicated preponderance of non-additive gene action for these traits. The estimates of general combining ability effects indicated that parents GM 1 and GM 2 were good general combiners for seed yield per plant and most of the yield attributing traits. Parents, SKM 9033, RSK 28 and GDM 4 for oil content, P. Mustard 21 and LES 45 for oleic acid, P. Mustard 21 and Dhara for lenoleic acid and P. Mustard 21 and LES 45 for erucic acid were found good general combiners. Cross combinations viz., GDM 4 × Dhara, SKM 9033 × RSK 28, GM 3 × LES 45, GDM 4 × EC 287711 and GM 1 × P. Mustard 21 were found good specific combinations for seed yield per plant and other desirable traits. Thus these cross combinations could be utilized in breeding programme for further amelioration of seed yield in Indian mustard.
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