Evaluating quality attributes of three durum wheat genotypes under different plant densities in Isfahan

To evaluate quality attributes of three durum wheat genotypes, Osta/Gata, Dipper-6 and PI40100, under five seed densities, 200, 275, 350, 425 and 500 seed.m-2, a spilt plots experiment in randomized complete block design with four replications was carried out in research farm of Isfahan University of Technology. Genotypes were considered in main-plots and seed densities in sub-plots. Results indicated that the genotypes had significant diffrences for grain yeild and quality attributes except for SDS sedimentation volume. Osta/Gata and PI40100 genotypes had the highest and lowest grain yeild, protein yeild and test weight, respectively, but the highest values of protein content and wet and dry gluten were observed in PI40100 and the lowest values in Osta/Gata and Dipper-6 genotypes. Results of correlation coefficients showed that there were the positive significant correlations among the grain yeild, protein yeild and test weight, while the negative significant correlations were observed between the grain yeild, protein yeild and test weight with grain protein contant and dry gluten weight. Results from this stuidy indicated that increasing plant desity increases the grain yeild, protein yeild and hectoliter weight and decreases grain protein contant and wet and dry gluten weight.