There is no diploid apomict among Czech Sorbus species: a biosystematic revision of S. eximia and discovery of S. barrandienica

0385429 - BÚ 2013 RIV CZ eng J - Journal Article
Vít, Petr - Lepší, M. - Lepší, P.
There is no diploid apomict among Czech Sorbus species: a biosystematic revision of S. eximia and discovery of S. barrandienica.
Preslia. Roč. 84, č. 1 (2012), s. 71-96. ISSN 0032-7786. E-ISSN 0032-7786
Institutional research plan: CEZ:AV0Z60050516
Institutional support: RVO:67985939
Keywords : apomixis * endemic * hybridization
Subject RIV: EF - Botanics
Impact factor: 2.833, year: 2012

The present study confirmed the existence of only triploid individuals of Sorbus eximia (previously reported only as diploid and tetraploid). A new tentatively apomictic triploid (2n = 3x = 51) species from the S. latifolia group: S. barrandienica P. Vit, M. Lepsi et P. Lepsi is described based on a revision of S. eximia. This species is assumed to have originated from a cross between S. danubialis or S. aria s.l. and S. torminalis. A wide palette of biosystematic techniques, including molecular (nuclear microsatellite markers) and karyological analyses (chromosome counts, DAPI flow cytometry) as well as multivariate morphometric and elliptic Fourier analyses, were used to assess the variation in this species and justify its independent taxonomic status.
Permanent Link: http://hdl.handle.net/11104/0214679