[Adaptibility of wheat alloplasmic lines in hybridization].

The adaptability of alloplasmatic lines of wheat and their hybrids with wheat-alien amphyploid and wheat was studied. The influence of nuclear genome and interaction of nuclear and cytoplasm genomes on adaptability of wheat and its hybrids has been established. For an estimation of adaptability it is necessary to use a complex of attributes (morphological, cytogenetic, resistance to abiotic and biotic factors of environment).

[Cytogenetic processes in the course of Triticum aestivum and Haynatricum hybridization].

Meiosis in hybrids obtained in direct and return crossings between Haynatricum and wheat was studied. In F1 hybrids the possibility of stimulation of homoeologous pairing between the chromosomes of T. aestivum and T.

[Problems of formation of genetic coadaptation during creation of synthetic genotypes].

In the review the problems of restoration of genetic coadaptation in some agricultural crops under creation of synthetic genotypes using sexual hybridization and transgenosis are considered. On the basis of the study of multiple molecular forms of the enzymes, the mechanisms of formation of adaptive complexes of genes (ACG) are traced. Cytogenetic mechanisms interfering stabilization of synthetic genotypes are considered.

[Genetic and biochemical mechanisms of ontogenetic and phylogenetic adaptation].

Results of the scientific research of genetic mechanisms of ontogenetic and phylogenetic adaptation in the department of genetics and molecular biology of the Odessa national university (ONU) are summarized. The new concept of genetic adaptation and adaptive heterosis is proposed. The evidence are presented that not only selection of selectively valuable alleles of the structural genes of enzymes, but also of gene-modifiers of the gene products are involved in the adaptation of D.

[The effect of alien genomes on the diploidization system in wheat].

Comparative investigation of Elymus sibiricus and other cereal genomes influence on wheat diploidization system was carried out. Elymus sibiricus genome was revealed to have a promoting effect on nonhomologous pairing, however, it is not sufficient for successful introgression of alien genes into wheat. Strain-specific influence of rye genome on nonhomologous chromosome pairing is noted under interaction with ph1b mutation.