Bridging global and microregional scales: ploidy distribution in Pilosella echioides (Asteraceae) in central Europe

0370191 - BÚ 2012 RIV GB eng J - Článek v odborném periodiku
Trávníček, Pavel - Dočkalová, Zuzana - Rosenbaumová, R. - Kubátová, B. - Szelag, Z. - Chrtek, Jindřich
Bridging global and microregional scales: ploidy distribution in Pilosella echioides (Asteraceae) in central Europe.
Annals of Botany. Roč. 107, č. 3 (2011), s. 443-454. ISSN 0305-7364. E-ISSN 1095-8290
Grant CEP: GA ČR GD206/08/H049
Výzkumný záměr: CEZ:AV0Z60050516
Klíčová slova: Pilosella echinoides * cytotype co-existence * flow cytometry
Kód oboru RIV: EF - Botanika
Impakt faktor: 4.030, rok: 2011

Five ploidy levels were found (2x, 3x, 4x, 5x and 6x) at dominantly ploidy-uniform populations. Even though, almost one quarter of populations harboured 2-5 cytotypes. Quite surprisingly, 3x cytotype prevailed in some mixed-ploidy populations, which was the first evidence of such phenomenon in plant system with exclusively sexual reproduction. The theory of maintenance of cytotype co-existence based not only on establishment of pre- and post- zygotic barriers, but even on free mating inetractions was suggested.
Trvalý link: http://hdl.handle.net/11104/0204062