IDENTIFICATION OF GENES FOR HOMEOLOGOUS P AIRING IN TRITICUM-AESTIVUML LINES

Common wheat lines with genes of Aegilops speltoides were tested for t heir ability to suppress the wheat Ph gene. Hybrids were obtained betw een the lines studied and rye. The c-index was used to estimate the le vel of pairing between homeologous chromosomes. It was shown that whea t lines differed from each other in the activity of inductor genes pai ring homoeological chromosomes, The highest c-index was found in line 11 (c = 0.32). Promising sources for introgression of alien genes into the wheat genome were found: lines that produce hybrids with bivalent s and multivalents at MI of meiosis and with c = 0.17-0.32. A complete scheme for obtaining wheat lines with Ae, speltoides inductor genes o f homeologous pairing from the genome-substitution form Avrodes is pre sented.