Détail de l'auteur
Auteur M. Sun |
Documents disponibles écrits par cet auteur (2)
Affiner la rechercheMating system of yellow starthistle (Centaurea solstitialis), a successful colonizer in North America / M. Sun in Heredity, 80 (2) (02/1998)
Titre : Mating system of yellow starthistle (Centaurea solstitialis), a successful colonizer in North America Type de document : Imprimé Auteurs : M. Sun ; K. Ritland Année de publication : 1998 Article en page(s) : 225-232 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Biologie de la reproduction
[CBNPMP-Thématique] Type de fécondation (hermaphrodite, entomogame, autocompatibilité)Mots-clés : Centaurea Centaurea solstitialis L. Résumé : The mating system of Centaurea solstitialis L. was investigated in relation to its colonization of North America. A preliminary investigation of its reproductive biology suggested that the species is a pollinator-dependent outbreeder, and probably self-incompatible. Quantitative analysis of the mating system parameters was performed using progeny arrays assayed for nine allozyme markers. Multilocus outcrossing rates (tm) ranged from 0.948 to 0.990 among eight populations. Moderate levels of biparental inbreeding (≈6 per cent apparent selfing) were detected in most populations. The correlation of outcrossed paternity within progeny arrays (rp) ranged from 0.05 to 0.64 among populations, indicating differences in modes of outcross pollination. A geographically marginal population, San Diego, showed the only significant parental inbreeding coefficient (F=0.27), as well as highest rp, suggesting microevolutionary changes of mating system following founder events. One other population exhibited significant variation of individual plant outcrossing rate, with a correlation of selfing within progeny arrays of rs=0.65, indicating variation of self-incompatibility. Mating system variation in colonizing, self-incompatible species is valuable for understanding the evolution of self-incompatibility systems. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137457
in Heredity > 80 (2) (02/1998) . - 225-232Sun, M., Ritland, K. 1998 Mating system of yellow starthistle (Centaurea solstitialis), a successful colonizer in North America. Heredity, 80(2): 225-232.Documents numériques
Consultable
Article (1998)Adobe Acrobat PDF
Titre : Reproductive biology and conservation genetics of Goodyera procera (Orchidaceae) Type de document : Tiré à part de revue Auteurs : K.C. Wong ; M. Sun Année de publication : 1999 Importance : 1406-1413 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Distribution de la diversité génétique
[CBNPMP-Thématique] Flux de gènes
[CBNPMP-Thématique] Stratégie de conservation in situ
[CBNPMP-Thématique] Structures des populations végétales
[CBNPMP-Thématique] Système de reproduction
[CBNPMP-Thématique] Variabilité en protéines, polymorphisme enzymatiqueMots-clés : Goodyera procera Résumé : Goodyera procera is an endangered terrestrial orchid in Hong Kong. Information on its reproductive biology and pattern of genetic variation is needed to develop efficient conservation strategies. Pollination experiments showed that the species is self-compatible, but dependent on pollinators for fruit set. Bagged plants produced no fruits. Artificial pollinations resulted in 92% fruit set through selfing, 94% with geitonogamous pollination, and 95% following xenogamous pollination. Fruit set in the open-pollinated control was 75% at the same sites. Allozyme electrophoresis and random amplified polymorphic DNA (RAPD) were used to evaluate genetic variation and structure of 15 populations of Goodyera procera. Despite its outbreeding system, allozyme data revealed low variation both at the population (P = 21.78%, A = 1.22, and H = 0.073) and species (P = 33%, A = 1.33, and H = 0.15) levels, in comparison with other animal-pollinated outbreeding plant species. However, RAPD variation was relatively high (P = 55.13% and H = 0.18 at the population level, and P = 97.03% and H = 0.29 at the species level). GST estimates indicated high levels of genetic differentiation among populations (GST = 0.52 and I = 0.909 ± 0.049 based on allozyme data, and GST = 0.39 and I = 0.859 ± 0.038 based on RAPD data), much above the average for outcrossing species, suggesting that gene flow was limited in this species. Based on these data, suitable strategies were developed for the genetic conservation and management of the species. Lien pérenne : DOI : 10.2307/2656923 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130344 Wong, K.C., Sun, M. 1999 Reproductive biology and conservation genetics of Goodyera procera (Orchidaceae). American Journal of Botany, 86(10) : 1406-1413.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 8517 W Tiré à part Centre de documentation Tirés à part Consultable Documents numériques
Consultable
Article (1999)URL
