A 5 x 5 diallel cross involving wheat varieties LU-26S, 18172, 27HTN/1-54, DSN-5 and 243-1, was evaluated for general combining ability (GCA), specific combining ability (SCA) and reciprocal effects for various yielding traits like, flag leaf area; number of tillers per plant, spike length, number of spikelets per spike, number of grains per spike, 1000-grain weight and grain yield per plant. The study revealed that variance of components attributable to GCA, SCA and reciprocals effects were highly significant for all the characters studied. The GCA mean squares were larger than those of SCA for all characters except number of tillers per plant, number of grains per spike and 1000-grain weight. The higher magnitude of SCA than GCA for characters indicated that non-additive type of gene action was involved for the expression of the characters. Genotype 2431 was better general combiner for flag leaf area, tillers per plant, number of grains per spike and 1000-grain weight. Most of the crosses showing desirable significant SCA effects involved non-additive type of gene action.