Is hybridisation with non-native congeneric species a threat to the UK native bluebell Hyacinthoides non-scripta ? / Markus Ruhsam in Plants, people, planet, vol. 5, n°6 (Année 2023) 

Public [article]  inPlants, people, planet > vol. 5, n°6 (Année 2023) . - pp. 813-1010 Titre : Is hybridisation with non-native congeneric species a threat to the UK native bluebell Hyacinthoides non-scripta ? Type de document : Livre Auteurs : Markus Ruhsam, Auteur ; Deborah Kohn, Auteur ; Jeannine Marquardt, Auteur ; Andrew R. Leitch, Auteur ; Harald Schneider, Auteur ; Johannes Vogel, Auteur ; Spencer C. H. Barrett, Auteur ; Philip E. Hulme, Auteur ; Jane Squirrell, Auteur ; Peter M. Hollingsworth, Auteur Année de publication : 2023 Article en page(s) : pp. 813-1010 Langues : Anglais Catégories : [ZG] Royaume-Uni [Espèces (in biblio)] Hyacinthoides hispanica [Espèces (in biblio)] Hyacinthoides non-scripta [Thèmes] Conservation Mots-clés : hybridation  plante menacée  introgression  Hyacinthoides x massartiana Résumé : "Hybridisation is an important evolutionary force in plants, but it can potentially lead to genetic swamping and extinction of one or both parental species. The threat of extinction is of particular concern if hybridisation occurs between native and introduced species, especially when the native is of national importance. The widespread occurrence of non-native bluebells in the United Kingdom has raised concerns that the iconic native bluebell could be at risk due to extinction by hybridisation from introduced non-native bluebells. This study determines the taxonomic identity of non-natives and investigates the amount of hybridisation occurring in natural and semi-natural UK bluebell populations." (source : auteurs) Type de publication : périodique Référence biblio : Ruhsam M., Kohn D., Marquardt J., Leitch A., Schneider H., Vogel J., Barrett S.-H., Hulme P., Squirrell J., Hollingsworth P., 2023 - Is hybridisation with non-native congeneric species a threat to the UK native bluebell Hyacinthoides non-scripta ? Plants, people, planet, 5 (6) : 813-1010. ID PMB : 71619 En ligne : https://nph.onlinelibrary.wiley.com/doi/epdf/10.1002/ppp3.10387 Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=71619 [article]

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Molecular Phylogenetic Relationships and Morphological Evolution in the Heterosporous Fern Genus Marsilea / Nathalie S. Nagalingum in Systematic Botany, vol. 32, n°1 (Année2007)

Public [article]  inSystematic Botany > vol. 32, n°1 (Année2007) . - pp. 16-25 Titre : Molecular Phylogenetic Relationships and Morphological Evolution in the Heterosporous Fern Genus Marsilea Type de document : Livre Auteurs : Nathalie S. Nagalingum, Auteur ; Harald Schneider, Auteur ; Kathleen M. Pryer, Auteur Année de publication : 2007 Article en page(s) : pp. 16-25 Langues : Anglais Catégories : [habitats/milieux] 22 - Eaux douces stagnantes [Espèces (in biblio)] Marsilea [Espèces (in biblio)] Marsileaceae Mots-clés : phylogénétique  biologie de la conservation  plante aquatique Résumé : "Using six plastid regions, we present a phylogeny for 26 species of the heterosporous fern genus Marsilea. Two well-supported groups within Marsilea are identified. Group I includes two subgroups, and is relatively species-poor. Species assignable to this group have glabrous leaves (although land leaves may have a few hairs), sporocarps lacking both a raphe and teeth, and share a preference for submerged conditions (i.e., they are intolerant of desiccation). Group II is relatively diverse, and its members have leaves that are pubescent, sporocarps that bear a raphe and from zero to two teeth, and the plants are often emergent at the edges of lakes and ponds. Within Group II, five subgroups receive robust support: three are predominantly African, one is New World, and one Old World. Phylogenetic assessment of morphological evolution suggests that the presence of an inferior sporocarp tooth and the place of sporocarp maturation are homoplastic characters, and are therefore of unreliable taxonomic use at an infrageneric level. In contrast, the presence of a raphe and superior sporocarp tooth are reliable synapomorphies for classification within Marsilea." (source : auteurs) Type de publication : périodique Référence biblio : Nagalingum N., Schneider H., Pryer K., 2007 - Molecular Phylogenetic Relationships and Morphological Evolution in the Heterosporous Fern Genus Marsilea. Systematic Botany, 32 (1) : 16-25. ID PMB : 58983 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=58983 [article]

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