Introgression of <Emphasis Type="Italic">Aegilops</Emphasis> genetic material into the genome of hexaploid triticale

Cytological analysis of different meiosis stages was performed in F₄ hybrids in comparison with the F₁ hybrids obtained through crosses between the hexaploid triticale and genome-substitution forms of Aurolata (AABBUU) and Aurosis (AABBS^shS^sh) wheat, in which D genome of common wheat Aurora was substituted for the genomes of Aegilops umbellulata and Ae. sharonensis, respectively. It was demonstrated that in F₄ the level of bivalent conjugation was substantially higher than the expected one. However, the value of meiotic index in F₄ hybrids was still small, pointing to incomplete process of the meiosis stabilization, specifically, of the stages following the metaphase I. Based on the data of morphological and biochemical analyses of the hybrids produced, the forms of triticale carrying some properties of the genus Aegilops, which were of interest for genetic and breeding studies, were isolated.