Intergenomic chromosome substitutions in wheat interspecific hybrids and their use in the development of a genetic nomenclature of Triticum timopheevii chromosomes

• Published in: Russian journal of genetics Vol. 46; no. 7; pp. 769 - 785
• Main Authors: Badaeva, E. D, Budashkina, E. B, Bilinskaya, E. N, Pukhalskiy, V. A
• Format: Journal Article
• Language: English
• Published: Dordrecht Dordrecht : SP MAIK Nauka/Interperiodica 01-07-2010; SP MAIK Nauka/Interperiodica
• Subjects: Animal Genetics and Genomics; Biomedical and Life Sciences; Biomedicine; Human Genetics; Microbial Genetics and Genomics; Reviews and Theoretical Articles; Triticum aestivum; Triticum timopheevii; Introgression Line; Homoeologous Group; Common Wheat; Chromosome Substitution; Powdery Mildew
• ISSN: 1022-7954; 1608-3369
• DOI: 10.1134/S102279541007001X

The results of analysis of the genome formation in interspecific hybrids of Triticum aestivum with T. timopheevii are reviewed. The spectra of substitutions and rearrangements are shown to depend on the genotypes of the parental forms and on the direction of selection. The frequencies of substitutions of individual T. timopheevii chromosomes significantly vary and reflect the level of their divergence relative to the common wheat chromosomes. Some aspects of classification of the At- and G-genome chromosomes are discussed.