Taxonomic revision of Sorbus subgenus Aria occurring in the Czech Republic

0447619 - BÚ 2016 RIV CZ eng J - Journal Article
Lepší, M. - Lepší, P. - Koutecký, P. - Bílá, J. - Vít, Petr
Taxonomic revision of Sorbus subgenus Aria occurring in the Czech Republic.
Preslia. Roč. 87, č. 2 (2015), s. 109-162. ISSN 0032-7786. E-ISSN 0032-7786
R&D Projects: GA ČR GB14-36079G
Institutional support: RVO:67985939
Keywords : apomixis * DAPI flow cytometry * hybridization
Subject RIV: EF - Botanics
Impact factor: 2.711, year: 2015

Three new triploid species are described: S. cucullifera M. Lepší et P. Lepší from the Podyjí and Thaytal National Parks between the towns of Znojmo and Vranov nad Dyjí, and S. moravicaM. Lepší et P. Lepší and S. pontis-sataniM. Lepší et P. Lepší from the Moravian Karst area near the city of Brno. Tetraploid taxa include S. danubialis and two newly distinguished taxa: S. thayensisM.Lepší et P. Lepší and S. collina M. Lepší, P. Lepší et N.Meyer. Sorbus thayensis is endemic to the Podyjí and Thayatal National Parks and in a similar manner as a triploid species varies very little morphologically, which indicates that these polyploid taxa reproduce apomictically. All these new species are assumed to have originated from interbreeding between S. danubialis and S. aria. Detailed distribution maps for all stenoendemics, photographs of the type specimens and line drawings of all polyploid species known from the Czech Republic are presented.
Permanent Link: http://hdl.handle.net/11104/0249416