[Mapping of the quantitative trait loci (QTL) associated with grain quality characteristics of the common wheat grown under different environmental conditions].

The quantitative trait loci (QTL) associated with individual characteristics of grain and flour quality in wheat lines grown under contrasting environmental conditions were mapped. Overall, 22 QTL that manifested under contrasting environmental conditions with various significances were detected on 10 chromosomes. Grain hardness and vitreousness were associated with three loci on chromosomes 5D, 6A, and 3A, while the gluten content, with two loci on chromosomes 5B and 7A.

[The effect of intercultivar substitution of wheat Triticum aestivum L. chromosomes on lipoxygenase activity and its correlation with the technological properties of flour].

The effects of intercultivar substitution of individual chromosome pairs (except for 1B, 6D, and 7A) in the wheat cultivars Saratovskaya 29 and Janetzkis Probat, differing in quality, on specific lipoxygenase activity, the grain yield per spike, and the main technological properties of flour and dough were studied. It was demonstrated that the substitution of individual chromosomes of the recipient cultivar Saratovskaya 29 with the homologous chromosomes of the donor cultivar Janetzkis Probat caused significant changes in lipoxygenase activity and several other quality characteristics. The correlations between the lipoxygenase activity and the parameters of physical dough properties were determined.

[Analysis of inheritance of morphological and biochemical characters introgressed into common wheat from Aegilops speltoides Tausch].

Genetic control of some morphological traits and the gliadin composition were examined in plants of two lines of common wheat carrying genes introgressed from the wild diploid cereal Aegilops speltoides. Leaf hairiness was shown to be controlled by a single introgressed dominant gene that was not allelic to the known common wheat gene Hl1. Waxlessness of the whole plant is controlled by the introgressed from Ae.

[Protein markers of traits of plants in breeding spring wheat for grain productivity and quality].

A comparative study of the composition of gliadin proteins contained in grains of different-quality wheat cultivars Rollo and Drott and four forms of hybrids F9 and F10, obtained by crossing these cultivars, has been performed. The traits of grain productivity of ears, quality of flour, dough, and gluten were analyzed. Groups of genetically linked gliadin components, controlled by chromosomes 1 and 6 of homoeologous groups, have been identified as protein markers of selectively valuable traits of plants.

[Aggregating ability of seed storage proteins from cereals differing in gluten quality].

The effects of pH, ionic strength, and medium composition on formation of macrocomplexes of seed storage proteins from wheat, rye, and barley have been studied. It has been found that various noncovalent interactions (electrostatic and hydrophobic interactions and hydrogen bonds) are involved in protein aggregation. Their combined action depends significantly on the biochemical nature of storage proteins and on the medium.