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Towards resolving the Knautia arvensis agg. (Dipsacaceae) puzzle: primary and secondary contact zones and ploidy segregation at landscape and microgeographic scales
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SYSNO ASEP 0326704 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Towards resolving the Knautia arvensis agg. (Dipsacaceae) puzzle: primary and secondary contact zones and ploidy segregation at landscape and microgeographic scales Title Knautia arvensis agg. (Dipsacaceae): primární a sekundární zóny kontaktu ploidních cytotypů a jejich segregace na krajinné i mikrogeografické úrovni Author(s) Kolář, F. (CZ)
Štech, M. (CZ)
Trávníček, Pavel (BU-J) RID, ORCID
Rauchová, Jana (BU-J)
Urfus, Tomáš (BU-J) RID
Vít, Petr (BU-J) RID, ORCID
Kubešová, Magdalena (BU-J) RID
Suda, Jan (BU-J) RIDNumber of authors 8 Source Title Annals of Botany. - : Oxford University Press - ISSN 0305-7364
Roč. 103, č. 6 (2009), s. 963-974Number of pages 12 s. Language eng - English Country GB - United Kingdom Keywords Knautia arvensis ; polyploidy ; ploidy mixture Subject RIV EF - Botanics R&D Projects KJB601110627 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z60050516 - BU-J (2005-2011) UT WOS 000264387600014 DOI 10.1093/aob/mcp016 Annotation n the present study, it has been demonstrated that Knautia arvensis is an intriguing taxon that shows variation in both genome copy number and monoploid genome size. Diploid and tetraploid cytotypes exhibit spatial segregation at all the geographical scales examined, including the Central European portion of the distribution range, the zone of ploidy overlap, the mixed-ploidy populations, and the selected mixed-ploidy plots within such populations. Distributional and phenotypic data support the existence of both primary and sec- ondary zones of cytotype contact. Irrespective of taxonomic affinity, ploidy level seems to be the major determinant of the strength of interploidy reproductive isolation. In addition, our study also highlights the importance of involving different ontogenetic stages when assessing evolutionary processes in mixed-ploidy populations. Workplace Institute of Botany Contact Martina Bartošová, martina.bartosova@ibot.cas.cz, ibot@ibot.cas.cz, Tel.: 271 015 242 ; Marie Jakšová, marie.jaksova@ibot.cas.cz, Tel.: 384 721 156-8 Year of Publishing 2010
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