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Breeding effort on increasing grain yield of wheat will incessantly continue   because it is indispensable product. Obtaining the genetic information such   as genotypic variation, heritability, genetic advance is the fundamental   components of these studies. It is important that the maternal effects are   put forward throughout successive generations because of genotypic and/or   environmental effects as far as variation. This research was conducted to   investigate changes of reciprocal crosses throughout successive generations   and determine selection criteria for high yield in early generations. For   this purpose, the populations were analyzed with regard to genotypic and   phenotypic variation coefficient, heritability, genetic advance and   Unweighted Pair Group Method (UPGMA) cluster analysis for real crosses,   reciprocals and all genotypes separately. According to the results,   heritability and genetic advance values of traits investigated were highly   varied throughout successive generations among real crosses, reciprocals and   all genotypes. This finding indicated that non-additive gen effects or   epitasis played a role in inheritance of all traits. Dissimilarity of   crosses than their reciprocals indicated variation of successive generation.   Dissimilarity value of each parent differed as generation progresses   according to combination created. This condition suggested that there were   maternal effects in this population throughout successive generations. Grain   weight per spike, spike harvest index and spike density had high direct and   indirect effects on the grain yield at all of three generations, it proved   that these traits can be a selection criterion for early generations. Sana   was the best parent and ?Bezostaja x Krasunia? and ?Krasunia x Pehlivan?   were best performance in most of traits at all generations.

Evaluation of reciprocal cross populations for spike-related traits in early consecutive generations of bread wheat (Triticum aestivum L.)