Determination of Grain Quality Parameters of Selected Bread Wheat Varieties and Pure Lines Derived from Landraces of Türkiye

Abstract

Bread wheat landraces are considered among important gene sources for quality breeding programs. This study aims to compare thousand kernel weight crude protein ratio, dry gluten ratio, grain hardness and zeleny sedimentation results of 20 bread wheat lines selected from landraces to 5 registered cultivars in order to determine future candidates for quality breeding programs. Field experiments were conducted in the consequent 2012-2013 and 2013-2014 growing seasons in Çanakkale (Türkiye), according to randomized complete block design with three replications. ANOVA results indicated significant difference among genotypes, means were compared with Duncan‘s test. Additionally, genotype × growing season interaction were significant for all parameters. Results of cluster and PCA Biplot analysis revealed a significant and positive relationship between crude protein ratio and dry gluten ratio while allowing for the selection of superior landrace pure lines. Our findings suggested that bread wheat varieties had higher TKW compared to landrace pure lines when pure lines had higher crude protein ratio, dry gluten ratio, sedimentation value with generally softer grains. Bread wheat landraces were concluded as being important variation sources.