Abstract
Using C-banding, homologous and homoeologous meiotic pairing between wheat (AB), rye (R), and Aegilops caudata (C) genomes were estimated at meiotic metaphase I in trigeneric hybrids (AABBRC; 2n = 6x = 42). In all hybrids, the C-genome chromosomes pair homoeologously only with chromosomes of the A genome, but not with chromosomes of the B genome or R genome. The A – C pairing was restricted to trivalents (0.15 per cell), each composed of two A-genome and one C-genome chromosomes. These preliminary data suggest that the C genome of Ae. caudata is probably more closely related to the A genome than to the B genome of wheat.Key words: trigeneric hybrid, wheat, rye, Aegilops, genome analysis, meiosis.
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