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Auteur Spencer Barrett |
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Affiner la rechercheLe mimétisme chez les plantes / Spencer Barrett in Dossier pour la science, n°HS (Année 2000)
Titre : Le mimétisme chez les plantes Type de document : Livre Auteurs : Spencer Barrett, Auteur Année de publication : 2000 Article en page(s) : pp. 94-100 Langues : Français Mots-clés : mimétisme plante Type de publication : périodique Référence biblio : Barrett S., 2000 - Le mimétisme chez les plantes. Dossier pour la science, HS : 94-100. ID PMB : 22170 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=22170
in Dossier pour la science > n°HS (Année 2000) . - pp. 94-100[article]Exemplaires
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Titre : Natural selection on floral traits through male and female function in wild populations of the heterostylous daffodil Narcissus triandrus Type de document : Livre Auteurs : Kathryn A. Hodgins, Auteur ; Spencer Barrett, Auteur Année de publication : 2008 Article en page(s) : pp. 1751-1763 Langues : Anglais Catégories : [Espèces (in biblio)] Narcissus triandrus
[Thèmes] ReproductionMots-clés : microsatellite trait floral Résumé : "Measurements of natural selection in hermaphrodite populations require the analysis of performance through both female and male sex functions. Here, we investigate selection on three floral traits: flower number, flower length, and corona width through both sex functions in natural populations of the tristylous daffodil Narcissus triandrus. Selection through female function was examined in six populations, and in two of these we also estimated male selection gradients using multilocus microsatellite genotyping of parents and offspring. We detected significant directional selection for flower number through female function, and significant stabilizing selection for corona width and flower length through male function. Variation in male reproductive success was strongly influenced by the distance between mates and was significantly higher than variation in female reproductive success in one population, a result consistent with Bateman's principle. However, variation through both sex functions was similar in the other population and there was a significant negative correlation between female and male fitness indicating sex‐specific trade‐offs in reproductive success. Selection on floral design in N. triandrus was stronger through male than female function probably because floral morphology plays an important role in promoting effective cross‐pollen transfer in populations of this heterostylous species." (source : auteurs) Type de publication : périodique Référence biblio : Hodgins K., Barrett S., 2008 - Natural selection on floral traits through male and female function in wild populations of the heterostylous daffodil Narcissus triandrus. Evolution, 62 (7) : 1751-1763. ID PMB : 48419 DOI : 10.1111/j.1558-5646.2008.00404.x En ligne : https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1558-5646.2008.00404.x Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=48419
in Evolution > vol. 62, fasc. 7 (2008) . - pp. 1751-1763[article]Exemplaires
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Titre : The development of eight microsatellite loci in the wild daffodil Narcissus triandrus (Amaryllidaceae) Type de document : Livre Auteurs : Kathryn A. Hodgins, Auteur ; Ivana Stehlik, Auteur ; Pauline Wang, Auteur ; Spencer Barrett, Auteur Année de publication : 2007 Article en page(s) : pp. 510-512 Langues : Anglais Catégories : [Espèces (in biblio)] Narcissus triandrus Mots-clés : microsatellite Résumé : "We report microsatellite primer pairs for the wild tristylous daffodil, Narcissus triandrus (Amaryllidaceae). From enriched libraries, we identified 58 unique microsatellite loci. We designed primer pairs for 27 of these loci and screened genomic DNA from 38 to 40 adults from a single population. For eight polymorphic loci, the number of alleles per locus ranged from five to 17. As six primers also amplified loci in three other Narcissus species, including two horticultural varieties, we expect that some of these markers will be transferable to other Narcissus species." (source : auteurs) Type de publication : périodique Référence biblio : Hodgins K., Stehlik I., Wang P., Barrett S., 2007 - The development of eight microsatellite loci in the wild daffodil Narcissus triandrus (Amaryllidaceae). Molecular Ecology Notes, 7 : 510-512. ID PMB : 48421 DOI : 10.1111/j.1471-8286.2006.01637.x Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=48421
in Molecular Ecology Notes > vol. 7 (2007) . - pp. 510-512[article]Exemplaires
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