Effect of D-Genome Associated Gluten Proteins on Durum Wheat Quality

Glutenin and gliadin genes present at the Glu-D1 and Gli-D1/Glu-D3 loci have been transferred to durum wheat through chromosome engineering or using spontaneous translocations existing in bread wheat. In particular, segments containing genes correspondirig to the pairs of high-molecular-weight glutenin subunits (HMW-GS) 5+ 10 or 2+ 12, normally present at the Glu­D 1 locus in bread wheat, bave been introgressed into chromosome 1A of different durum wheat cultivars, replacing the null allele present at the Glu-A 1 locus. Using the same approach on the bread wheat cultivar Perzivan, carring a translocation involving the short arm of chromosomes 1A and 1D, the two alleles present at Gli-D1/Glu-D3 Ioci in most bread wheat cultivars, encoding gliadin and low molecular weight glÙtenin subunits (LMW-GS), bave also been introduced into durum wheat. Effect of the presence of D-genome related proteins in durum wheat on quality characteristics have been assessed and will be described.