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Diverse technological purposes of bread wheat grain requires a broadening the genetic base of selection for quality traits. Introgressions potentially may affect technological properties of grain and flour and add to a genetic variability of the trait. The aim of this work was to investigate the influence of introgressions from exotic tetraploid wheat Triticum timopheevii and wild cereal species, Aegilops speltoides and Aegilops markgrafii into bread wheat on grain quality. The introgression from T. timopheevii including the microsatellite marker Xgwm636 into 2AS chromosome of cv. Saratovskaya 29 resulted in a significant increase of gluten content in grain. The effect was confirmed by re-introducing the recombinant chromosome again into the same genetic background. The analogous effect was observed in the line of winter cultivar Alcedo with the similar alien fragment in 2AS chromosome inherited from Ae. markgrafii. Introgression of 5S chromosome of Aegilops speltoides carrying the gene Ha-Sp for grain softness into hard-grain bread wheat cultivars resulted in obtaining the genotypes with soft grain texture. Combining two dominant genes for grain softness Ha and Ha-Sp in one genotype allowed us to obtain the plants with grain having the new milling properties – very low vitreousness (about 30 %) and small particle size (about 10 μm).

Enlargement of the Genetic Diversity for Grain Quality in Bread Wheat Through Alien Introgression