Grain Yield and Quality Characteristics of Chromosome 1D and 1B Substitution Lines in Durum Wheat and their F2-derived Progeny Lines. II. Preliminary Comparisons with Normal Durum and Bread Wheats

Abstract

Abstract The grain yield and quality characteristics of three types of wheat, bread wheat, durum wheat and chromosome 1D substituted durum wheats, were studied. The yields of the durum wheats were less than half those of the bread wheats, but higher than the durum substitution lines carrying chromosome 1D. Grain protein content was correlated negatively with grain yield among the hexaploid wheats, but not among the tetraploids. The proportion of glutenin in flour measured by SE-HPLC was correlated consistently with all Mexograph quality parameters. Durum wheat lines carrying the γ-45 prolamin (gliadin) band gave values for the proportion of total and highly-aggregated glutenin that were similar to those of medium strength bread wheats, whereas the Langdon 1D(1A) tetraploid lines were similar to medium dough strength hexaploid wheats as measured by SDS-sedimentation values.