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Physical Distribution of Homoeologous Recombination in Individual Chromosomes of Festuca pratensis in Lolium multiflorum
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SYSNO ASEP 0349180 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Physical Distribution of Homoeologous Recombination in Individual Chromosomes of Festuca pratensis in Lolium multiflorum Author(s) Kopecký, David (UEB-Q) RID, ORCID
Havránková, Miroslava (UEB-Q)
Loureiro, J. (PT)
Castro, S. (PT)
Lukaszewski, A.J. (US)
Bartoš, Jan (UEB-Q) RID, ORCID
Kopecká, J. (CZ)
Doležel, Jaroslav (UEB-Q) RID, ORCIDSource Title Cytogenetic and Genome Research. - : Karger - ISSN 1424-8581
Roč. 129, 1-3 (2010), s. 162-172Number of pages 11 s. Language eng - English Country CH - Switzerland Keywords Chromosome introgression ; Festuca ; Flow cytometry Subject RIV GE - Plant Breeding R&D Projects QH71267 GA MZe - Ministry of Agriculture (MZe) GP521/07/P479 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z50380511 - UEB-Q (2005-2011) UT WOS 000280519500018 DOI 10.1159/000313379 Annotation Crossing over-based recombination is a powerful tool for generating new allelic combinations during sexual reproduction. It usually occurs between homologous chromosomes. However, under some conditions, homoeologues may also be capable of crossing over. Whether homologous and homoeologous crossovers are equivalent and governed by the same rules has never been established. Here we report on chromosome distribution of homoeologous crossovers in a unique system of Festuca X Lolium hybrids. Unlike in most other hybrids, in these intergeneric hybrids, homoeologous chromosomes are capable of pairing and crossing over with frequencies approaching that of homologues. At the same time, genome divergence makes cytological detection of chromosome recombination feasible. We analyzed the distribution of homoeologous recombination along individual chromosomes in a complete set of intergeneric single chromosome substitutions from F. pratensis into tetraploid L. multiflorum. Workplace Institute of Experimental Botany Contact David Klier, knihovna@ueb.cas.cz, Tel.: 220 390 469 Year of Publishing 2011
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