Abstract
The number of rye and wheat chromosomes was investigated in the progeny of octoploid Triticale plants (2n = 56). The strain in question exhibits a high degree of meiotic disturbances resulting in a high frequency of aneuploids. Rye and wheat chromosomes were identified by band patterns obtained after Giemsa staining. This technique was found to be more accurate than previous identification techniques. Chromosomes of both the wheat and rye genomes are missing in aneuploids, roughly in proportion to the number of genomes. Rye chromosomes were not over-represented among the missing ones as was previously believed to be the rule in octoploid Triticale.
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