Estimating Genotypic Ranks by Nonparametric Stability Analysis in Bread Wheat (Triticum aestivum L.)

Y. KAYA and S. TANER
Bahri Dagdas International Agricultural Research Institute, Konya, Turkey

Abstract

KAYA, Y. and S. TANER, 2002. Estimating genotypic ranks by nonparametric stability analysis in bread wheat (Triticum aestivum L.). Bulg. J. Agric. Sci., 8: 479–484

This study was carried out to determine the ranks of 9 bread wheat (Triticum aestivum L.) genotypes across eleven environments in Central Anatolia, Turkey, in the 2000–2002 growing seasons. Experimental layout was a randomized complete block design with four replications. Analysis of Non parametric stability revealed that genotypes 4 and 8 were most stable and well adapted across eleven environments. In addition, it was concluded that plots obtained by both mean yield (kg ha–1) vs. S1(1) and mean yield (kg ha–1) vs. S2(2) values could be enhanced visual efficiency of selection based on genotype x environment interaction.

Key words: bread wheat (Triticum aestivum L.), yield, nonparametric stability analysis