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Hybridization within a Pilosella Population: a Morphometric Analysis

  • Autores: Tomás Urfus,, Frantisek Krahulec, Anna Krahulcová
  • Localización: Folia geobotánica: A journal of plant ecology and systematics, ISSN-e 1874-9348, ISSN 1211-9520, Vol. 49, Nº 2, 2014, págs. 223-238
  • Idioma: inglés
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  • Resumen
    • 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.


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