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VARIABILITY, AMMI AND CLUSTER ANALYSIS FOR QUALITY COMPONENTS OF DIFFERENT WHEAT GENOTYPES

The present study was carried out to investigate the variability and heritability ofwheat quality components and to evaluate the stability of ten wheat genotypes indifferent environmental conditions. The experiment was conducted in the Centerfor Small Grains in Kragujevac, Serbia during two growing seasons (2010 and2011). Thousand grain weight had the highest value of GCV and PCV (7.13 and7.7%), while test weight had the lowest PCV (3.24%) and protein content had thelowest GCV (1.82%). The highest heritability was observed for thousand grainweight (H2=85.37%), while the lowest one was found for protein content(H2=19.56%). The AMMI analysis showed significant effect of the G×Einteraction, where first main component was significant for all components.Genotypes KG-56, Arsenal and Osječanka are close to the average values for allcomponents and expressed the highest stability. Genotypes with the highest orlowest average values for analyzed traits, such as Norin 10, Mironovskaya 808,Gruža and Spartanka, showed moderate to high instability. Cluster analysiscategorized the genotypes into four groups. The genotype Norin 10 showed thehighest distance from other genotypes, whereas the stable genotypes grouped together.