Vol. 10, Issue 12 (2021)

Author(s):
Nageshwar, Som Veer Singh, Mahak Singh, Lokendra Singh, Sarvendra Kumar, Nand Kumar and Anjani Kumar Singh

Abstract:
The F₁ 45 genotypes and F₂ 45 genotypes including ten - parents’ produced through diallel cross (excluding reciprocal) of wheat (Triticum aestivum L.) were analyzed for combining ability for yield and yield associated traits. Highly significant variances due to gca and sca in both the generations of present study for all the traits revealed that additive as well as non-additive genetic effects were involved in determining the traits. The analysis of variance indicated significant differences among the treatment for all the characters. Among the parents based on per se performance and gca effects, good general combiners, namely, HD3086, K8962 and K1314 for days to 75 per cent heading, HD3086, DBW88 and K8962 for days to maturity, HD2733 and K0307 for plant height (cm), K0307 and K1601 for number of productive tillers, DBW88 for spike length (cm), DBW88 for number of spikelets per spike, DBW88, HD2733, K0307, HD2967 and K0402 for number of grains per spike, HD3086, HD2733 and K0402 for 1000-grain weight (g), HD3086, K0307, HD2967 and K0402 for grain yield per plant (g), DBW88 and K0402 for biological yield (g), HD3086, DBW39, K0307, HD2967 and K0402 for Harvest index (%), DBW88, K0307 and K0402 for protein content (%) were common in both F₁ and F₂ generations. On the basis of per se performance and positive significant gca effect the cross combinations, viz.,HD 3086 X K 1601 and HD 2967 X K 1314 proved to be the best specific combiner in both the generation. The crosses involving good general combiners and showing high sca effects may be utilized for further breeding purposes.