Hybridization within a Pilosella population: a morphometric analysis

0429955 - BÚ 2015 RIV NL eng J - Journal Article
Urfus, Tomáš - Krahulec, František - Krahulcová, Anna
Hybridization within a Pilosella population: a morphometric analysis.
Folia Geobotanica. Roč. 49, č. 2 (2014), s. 223-238. ISSN 1211-9520. E-ISSN 1874-9348
R&D Projects: GA ČR GA206/08/0890
Institutional research plan: CEZ:AV0Z60050516
Institutional support: RVO:67985939
Keywords : hybridization * introgression * multivariate morphometrics
Subject RIV: EF - Botanics
Impact factor: 1.778, year: 2014

We traced hybridization processes taking place within a mixed population of Pilosella piloselloides subsp. bauhini and P. officinarum by means of a morphometric analysis of plants sampled in the field. Our results show that hybridization is frequent between the two taxa as well as between their two stabilized hybrids (P. brachiata and P. leptophyton). Plants utilizing three different modes of reproduction (sexual, facultatively apomictic and variable) participated in these hybridizations, Pilosella brachiata being the most important player. We identified several trends in progeny morphology, which evidently reflect different reproductive pathways, namely sexuality, apomixis and haploid parthenogenesis, occurring within the population under study. Introgression into sexual P. officinarum is commonplace.
Permanent Link: http://hdl.handle.net/11104/0234913