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Updated: May 5, 2026
Manipulation of Ploidy in Caenorhabditis elegans
Published on: March 15, 2018
Karyotype stabilization in intergeneric hybrids of the subtribe Triticinae : 1. The effects of genome structure
A I Shchapova1, T A Potapova, L A Kravtsova
1Academy of Sciences of the Siberian Department, Institute of Cytology and Genetics, 630090, Novosibirsk, USSR.
Abstract:
The C-banded data obtained from Triticinae hybrids are studied with reference to the stabilization of their karyotypes. The types of hybrids distinguished according to genome structure are type I with minimally one diploid genome and type II with a haploid set only. Comparative analysis demonstrates that type I differs from II in karyotype stabilization. The chromosomes from various haploid genomes are combined into new genomes in type I; type II is represented only by amphiploids with the complete set of the chromosomes from all the genomes. The meiotic behaviour of the haploid genome chromosomes were found to have a modifying effect on karyotype stabilization: type II becomes I when homoeologous pairing level is high and when it is associated with the reductional division of univalents.
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