Abstract
The chromosomal composition of the Zernokormovaya 169, Istra 1, Ostankinskaya, and Otrastayushchaya 38 cultivars of octoploid partial wheat-wheatgrass hybrids was studied using genomic in situ hybridization (GISH). Differentiation of wheatgrass chromosomes by the distribution of the GISH signal along the chromosome was revealed. The wheatgrass chromosomes of the hybrid cultivars studied in the work differed in the type of differentiation, centromeric index, and absolute size. The cytogenetic distinctions of these chromosomes revealed by us can be used in making crosses and in studying the transmission through gametes of additional wheatgrass chromosomes.
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