Yield stability of some Turkish winter wheat (Triticum aestivum l.) genotypes in the western transitional zone of Turkey

The purpose of the study was to evaluate the yield performance and stabilities of certain winter bread wheat cultivars grown widely in the winter wheat regions of Anatolian peninsula. Eight varieties were grown at 10 locations between 2007 and 2011 cropping seasons, in a field trial arranged in Randomized Complete Block Design with 4 replications. The combined analysis of variance was performed for the data obtained. The significant genotype x environment interactions were further investigated by the regression and the ecovalance analyses. It was concluded that cultivars Kate A1 and Mufit bey were found to be the most stable genotypes for all the environments whereas cultivar Gerek-79 was found to be the best performer for under poor soil and weather conditions.

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