Author(s):

Prakriti Tomar, Sanjay Kumar Singh, Somveer Singh, Jagdish Prasad Chaurasiya and Mayank Shekar Singh

Abstract: In order to estimate the magnitude of combining ability and heterosis of wheat, 15 hybrids were synthesised in a 6 × 6 diallel fashion excluding reciprocals. The experiment was conducted in 2014–15 and 2015–16 at Crop Research Farm of CSAUA&T, Kanpur, UP. Analysis of combining ability and heterosis over better parent (BP) was undertaken for yield and its component traits. The inspection of data exhibited that the variance due to gca was higher than variance due to sca for all traits except for number of spikelets per spike and 1000-grain weight which indicated the predominance of additive gene action. Parental genotypes K9107, PBW343 and K1006 were found as good general combiners based on their gca effects as well as per se performance for grain yield. Based on sca effects, crosses K1006×K9107 and K9107×K607 were exhibited good specific combinations in F₁ generation for grain yield per plant. All the desirable specific combiners for different traits involved either high x high or high x low or low x low general combiners. Significant and desirable heterosis over better parent identified for three cross combinations K1006×K424, K9107×K424, and K607×K424 for grain yield.

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