Half diallel analysis through griffing’s approach in sesame (Sesamum indicum L.)

DOI: 10.22161/ijeab.105.14

Abstract:
Ten sesame (Sesamum indicum L.) genotypes were crossed in a half diallel mating fashion to produce 45 hybrids. The analysis of variance for combining ability revealed that mean sum of squares due to GCA and SCA were found highly significant for all the traits. The lower estimates of potence ratio indicated that non-additive gene action was predominant for the inheritance of all the traits except oil contain.The estimates of general combining ability effects revealed that the parents, Keriya 10, U-6-3 and ST-12-25 were good general combiners for seed yield per plant. The genotype Keriya 10 was also good general combiner for plant height (cm), number of braches per plant, number of capsules per plant, number of seeds per capsule, biological yield per plant (g) and 1000-seed weight (g). The cross combinations viz., Keriya 10 × BS-6-1, U-6-3 × Khadkala-1 and U-6-3 × EI-233 were found to be good specific cross combination for seed yield per plant and its attributes. Crosses with high sca effect in seed yield per plant were in combinations of good × poor general combiners.

Keywords:
Combining ability, Gene action, Griffing’s approach, Half-diallel, Sesame

Article Info:
Received: 03 Sep 2025; Received in revised form: 30 Sep 2025; Accepted: 05 Oct 2025; Available online: 12 Oct 2025

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