Abstract
The study of meiotic chromosome behavior in hybrid lines obtained by crossing common wheat with tetraploid wheat species shows that the introgression of alien genetic material into the common wheat genome does not have a negative effect on its meiotic stability. Aberrant cells are few not only in the metaphase but also at the final stage of the tetrads. The variation in the level of cytological stability between the studied lines stems from differences in the number and localization of tetraploid wheat genome fragments in the hybrid genome. The influence of the cytoplasm on the formation of the karyotype of wheat introgression lines has been detected.
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