[Chromosomal localization of the speltoidy gene, introgressed into bread wheat from Aegilops speltoides Tausch., and its interaction with the Q gene of Triticum spelta L].

The differences between bread wheat (Triticum aestivum L.) and spelt (Triticum spelta L.) in the shape of the spike and threshing character are determined by the allelic status of one major Q gene, mapped to the long arm of chromosome 5A. This gene is a member of the APETALA2 family of transcription factors and plays an important role in domestication of wheat. In the present study, using monosomic analysis, we determined the chromosomal localization of the Q(S)gene, introgressed into bread wheat from Aegilops speltoides Tausch. and homoallelic to the Q gene. It was demonstrated that the Q(S) gene was located in chromosome 5A of the bread wheat line from the Arsenal collection. This gene conferred spike speltoidy in the line itself, as well as in its hybrids with bread wheat cultivars. The Q(S) gene dominated over the bread wheat Q gene and was equally effective in the homo-, hemi-, and heterozygous states. In hybrids between the introgression line and a number of spring spelt accessions, interaction between the Q and Q(S) genes was observed, manifested as the formation of superspeltoid spike.

[Genetic analysis of the traits introgressed from Aegilops speltoides Tausch. to common wheat and determined by chromosome 5A genes].

A winter common wheat accession from the Arsenal collection was genetically examined to study the results of introgression, which substantially changed the physiological and morphological traits of the original spring cultivar Rodina. Apart from its winter habit, the accession was characterized by awned speltoid spikes, suggesting introgression into chromosome 5A, which carried marker genes in the order Vrn-Al-Q-Bl. Genetic analysis showed that the chromosome fragment introgressed from Aegilops speltoides recombined well with the homeologous region of common wheat chromosome 5A in the region between the Vrn-Al and Q genes. Recombination between the Vrn-Al and Bl genes was not detected, and it was assumed that the order of the marker genes of chromosome 5A was inverted to produce Q-Vrn-Al-Bl. When the winter introgression line was crossed with Triticum spelta, an interaction of two dominant genes determining the spike character was for the first time detected in F1, increasing the spike length and the number of spikelets, and was transmitted to F2. It was assumed that Ae. speltoides had a homeoallelic speltoid gene, which was designated as Q(S).

[Spongy dressings from alginic acid salts in the treatment of suppurative wounds]. / Gubchatye pereviazochnye materialy iz solei al'ginovoi kisloty v lechenii gnoinykh ran.

Spongy dressing materials made from alginic acid salts, specifically immobilized with terrilitinum (teralginum) were found to reduce the period of wound purification from suppurative and necrotic tissues and to facilitate more rapid, viz. 1.5-fold compared to the control, patient recovery, particularly after preliminary wound treatment with defocussed CO2 laser beam. In the group on teralginum, the cytological study demonstrated more intensive wound purification from microflora, more active growth and differentiation of reparation cells, specifically of fibroblasts, which influences the results of accelerated wound healing.