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Auteur Nicole Galland |
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Essai sur la diversité de la flore alpienne / Claude Favarger (1996)
est un tiré à part de 258 - 1996 - Volume jubilaire J.-L. Richard (Dissertationes botanicae) / Pascal Vittoz
Titre : Essai sur la diversité de la flore alpienne Type de document : Tiré à part de revue Auteurs : Claude Favarger (1913-2006) ; Nicole Galland Année de publication : 1996 Importance : 13-29 Langues : Français (fre) Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=134772 Favarger, Claude (1913-2006), Galland, Nicole 1996 Essai sur la diversité de la flore alpienne. Dissertationes botanicae, 258 : 13-29.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 22857 Favarger, C. Tiré à part Centre de documentation Tirés à part Consultable Genetic Variability and Founder Effect in the Pitcher Plant Sarracenia purpurea (Sarraceniaceae) in Populations Introduced into Switzerland : from Inbreeding to Invasion / Christian Parisod in Annals of Botany, 95 (2005)
[article]
Titre : Genetic Variability and Founder Effect in the Pitcher Plant Sarracenia purpurea (Sarraceniaceae) in Populations Introduced into Switzerland : from Inbreeding to Invasion Type de document : Numérique Auteurs : Christian Parisod ; Charlotte Trippi ; Nicole Galland Année de publication : 2005 Article en page(s) : 277-286 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Géographique] SuisseMots-clés : Sarracenia purpurea L., 1753 Résumé : Background and aims: The long-lived and mainly outcrossing species Sarracenia purpurea has been introduced into Switzerland and become invasive. This creates the opportunity to study reactions to founder effect and how a species can circumvent deleterious effects of bottlenecks such as reduced genetic diversity, inbreeding and extinction through mutational meltdown, to emerge as a highly invasive plant. Methods: A population genetic survey by random amplified polymorphism DNA markers (RAPD) together with historical insights and a field pollination experiment were carried out. Key results: At the regional scale, S. purpurea shows low structure (thetast=0.072) due to a recent founder event and important subsequent growth. Nevertheless, multivariate statistical analyses reveal that, because of a bottleneck that shifted allele frequencies, most of the variability is independent among populations. In one population (Tenasses) the species has become invasive and genetic analysis reveals restricted gene flow and family structure (thetast=0.287). Although inbreeding appears to be high (Fis >0.410 from a Bayesian estimation), a field pollination experiment failed to detect significant inbreeding depression upon F1 seed number and seed weight fitness-traits. Furthermore, crosses between unrelated individuals produced F1 seeds with significantly reduced fitness, thus showing local outbreeding depression. Conclusions: The results suggest that, under restricted gene flow among families, the species may not only have rapidly purged deleterious alleles, but also have undergone some form of selection for inbreeding due to co-adaptation between loci.
Lien pérenne : DOI : 10.1093/aob/mci023 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=142815
in Annals of Botany > 95 (2005) . - 277-286Parisod, Christian, Trippi, Charlotte, Galland, Nicole 2005 Genetic Variability and Founder Effect in the Pitcher Plant Sarracenia purpurea (Sarraceniaceae) in Populations Introduced into Switzerland : from Inbreeding to Invasion. Annals of Botany, 95: 277-286.Documents numériques
Consultable
Article (2005)URL Les taxons boréo-montagnards des hautes montagnes d'Afrique du Nord : leur signification biogéographiques pour les domaines altalsique et alpien / Nicole Galland in Revue valdôtaine d'histoire naturelle, 48 (suppl.) (1994)
[article]
Titre : Les taxons boréo-montagnards des hautes montagnes d'Afrique du Nord : leur signification biogéographiques pour les domaines altalsique et alpien Type de document : Imprimé Auteurs : Nicole Galland Année de publication : 1994 Article en page(s) : 201-208 Langues : Français (fre) Résumé : Actes du colloque "Ecologie et biogéographie alpines" de septembre 1990 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147753
in Revue valdôtaine d'histoire naturelle > 48 (suppl.) (1994) . - 201-208Galland, Nicole 1994 Les taxons boréo-montagnards des hautes montagnes d'Afrique du Nord : leur signification biogéographiques pour les domaines altalsique et alpien. Revue valdôtaine d'histoire naturelle, 48(suppl.): 201-208.