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Hybridization studies inSilene subgen.Petrocoptis (Caryophyllaceae)

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Abstract

Silene subgenusPetrocoptis comprises sexual diploid taxa and it is restricted to calcareous cliffs in the Iberian peninsula. Artificial crosses involvingSilene pyrenaica (Bergeret)Mayol etRosselló (≡Petrocoptis pyrenaica (Bergeret)Walp.),Silene laxipruinosa Mayol etRosselló andS. montserratii subsp.crassifolia (Rouy)Mayol etRosselló (≡P. crassifolia Rouy) were attempted to assess the extent of barriers developed within the subgenusPetrocoptis. Usually, intraspecific crosses involving allopatric populations were successful, suggesting that geographically isolated populations are not genetically isolated. Cross-compatibility was noted among the polymorphicS. pyrenaica, which developed fertile F1 hybrids. All other interspecific crosses failed due to cross- or seed-incompatibility. Crossing results agree with available evidence supporting the merging of segregates ofS. pyrenaica within a single taxon.

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Authors and Affiliations

  1. Centre de Recerca Ecològica i Aplicacions Forestals (CREAF), Universitat Autonòma de Barcelona, E-08193, Bellaterra (Barcelona), Spain

    Maria Mayol

  2. Jardi Botànic, ICBiBE, Universitat de València, c/Quart 80, E-46008, Valencia, Spain

    Josep A. Rosselló

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  1. Maria Mayol
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  2. Josep A. Rosselló
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Correspondence to Josep A. Rosselló.

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Mayol, M., Rosselló, J.A. Hybridization studies inSilene subgen.Petrocoptis (Caryophyllaceae). Folia Geobot 41, 203–212 (2006). https://doi.org/10.1007/BF02806479

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  • DOI: https://doi.org/10.1007/BF02806479

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