Author(s):

SD Tayade, NR Potdukhe, BK Das, SJ Gahukar, Swati Bharad and RM Phuke

Abstract: A diallel crosses was practiced among twelve diverse bread wheat (Triticum aestivum L.) cultivars. The study of only F₁ of the sixty-six direct crosses and the twelve parents were grown in a field experiment at IARI-ICAR, Sub-Station (Wheat), Indore environment in 2017-18 to estimate combining abilities. Data revealed that the mean square of genotypes, parents and crosses were significant for all studied characters. The analysis of variance for combining ability showed that mean square due to general (GCA) and specific (SCA) combining ability, were generally significant for all studied characters reflecting the importance of both additive and non- additive gene effects in the inheritance of these characters. Combining ability were lower than those of specific combining ability, consequently the GCA/SCA ratios were less than unity indicating the prevailing of non-additive gene effect which have considerable roles in the inheritance of these characters. In general, the genotype AKAW-4924 was a good combiner for early flowering and maturity, 1000 grain weight. AKAW-4925 was good combiner for number of grain per earhead and high grain yield/plot and AKW-1071 for number of effective tillers per plant. Besides K-307 was a good combiner for tall plant. These results seem to be useful for wheat breeding program in making the proper decision when initiating a crossing plan.

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