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CBNPMP-Thèmes > Ecologie et géographie botanique > Démographie, écologie des populations (dynamique des populations, démécologie) > Génétique et écologie (dynamique, démographique, sélection) > Système de reproduction
Système de reproduction
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Genetic and evolutionary consequences of small population size in plants : implications for conservation / Spencer C.H. Barrett (1991)
Titre : Genetic and evolutionary consequences of small population size in plants : implications for conservation Type de document : Extrait d'ouvrage Auteurs : Spencer C.H. Barrett ; Joshua R. Kohn Année de publication : 1991 Importance : p. 3-30 Catégories : [CBNPMP-Thèmes] Système de reproduction
[CBNPMP-Thèmes] Génétique et écologie (dynamique, démographique, sélection)
[CBNPMP-Thèmes] Structures des populations végétales
[CBNPMP-Thèmes] Conservation et gestion des espècesPermalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=84350 Barrett, SCH., Kohn, JR. 1991. Genetic and evolutionary consequences of small population size in plants : implications for conservation. In: Genetics and conservation of rare plants. Oxford University Press, New-York: 3-30.Increasing spring temperatures favor oak seed production in temperate areas / Thomas Caignard in Scientific reports, (17 August 2017)
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Titre : Increasing spring temperatures favor oak seed production in temperate areas Type de document : Électronique Auteurs : Thomas Caignard ; Antoine Kremer (1951-) ; Cyril Firmat ; Manuel Nicolas ; Samuel Venner ; Sylvain Delzon (1977-) Année de publication : 2017 Article en page(s) : 1-8 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Global change, écosystème, évolution
[CBNPMP-Thèmes] Graines
[CBNPMP-Thèmes] Reproduction végétative
[CBNPMP-Thèmes] Système de reproductionMots-clés : Quercus L., 1753 Résumé : The changes in reproductive phenology (i.e. timing of flowering and fruiting) observed in recent decades demonstrate that tree reproduction has already been altered by climate change. However, understanding the impact of these changes in reproductive success and fitness remains a major challenge for ecologists. We describe here a previously unreported phenomenon: a significant increase in the reproductive effort (seed production) of temperate oaks with increasing spring temperature, observed over the last decade. In contrast, no relationship was found between seed production and precipitation. This sensitivity of seed production to temperature was confirmed by a “space-for-time” substitution based on elevation gradients. Our findings suggest that global warming may enhance oak reproductive effort in temperate ecosystems. Nevertheless, while fitness can be enhanced by higher levels of seed production, it also depends on the frequency and synchronization of mast seeding production, which may also be influenced by climate change. Lien pérenne : DOI : 10.1038/s41598-017-09172-7 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=143285
in Scientific reports > (17 August 2017) . - 1-8Caignard, T., Kremer, A., Firmat, C., Nicolas, M., Venner, S., Delzon, S. 2017. Increasing spring temperatures favor oak seed production in temperate areas. Scientific reports: 1-8.Documents numériques
Consultable
Article (2017)URL Is the dichogamy of Salvia verbenaca (Lamiaceae) an effective barrier to self-fertilization? / Luis Navarro (1997)
Titre : Is the dichogamy of Salvia verbenaca (Lamiaceae) an effective barrier to self-fertilization? Type de document : Tiré à part de revue Auteurs : Luis Navarro Année de publication : 1997 Importance : 111-117 Langues : Anglais (eng) Catégories : [CBNPMP-Thèmes] Régime et stratégie de reproduction (allogamie, autogamie, apomixie, reproduction asexué)
[CBNPMP-Thèmes] Système de reproductionMots-clés : Salvia verbenaca L. Résumé : Though dichogamy is generally interpreted as a means of preventing self-fertilization, the efficiency of this mechanism has been questioned. Little attention has been paid to functional aspects of male/female timing, such as variation over time in pollen germinability and in stigma receptivity. In the present study these aspects of male/female timing were investigated in the protandrous speciesSalvia verbenaca. To evaluate the effects of selfing, fruit set, total seed weight produced and seed/ovule ratio were also determined, (a) following artificial crossing, (b) following selfing (i.e. bagging) and (c) under natural conditions. Both pollen germinability and stigma receptivity peaked on the last day (day 3) of the flower's life, which presumably favours selfing. Neither fruit set nor seed/ovule ratio were significantly affected by pollination regime, but the total seed weight produced by artificially crossed plants was significantly higher than that produced by bagged or untreated plants. Neither fruit set, seed/ovule ratio nor total seed weight differed significantly between the two years of study. Thus, if aS. verbenaca flower receives outcrossing pollen it will produce a greater weight of seeds (with consequent advantages in terms of female reproductive success). However, the peaking of both pollen germinability and stigma receptivity on day 3 of the flower's life means that selfing is likely to occur if outcrossing pollen has not been received over the early part of the flower's life. Lien pérenne : DOI : 10.1007/BF00985212 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=130318 Navarro, L. 1997. Is the dichogamy of Salvia verbenaca (Lamiaceae) an effective barrier to self-fertilization? Plant systematics and evolution, 207 : 111-117.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 8433 Navarro L. Tiré à part Centre de documentation Tirés à part Consultable Observations sur la biologie de l'Arum cylindraceum Gasp. (Araceae) en Corse / Alain Fridlender in Acta botanica gallica, 146 (4) (1999)
[article]
Titre : Observations sur la biologie de l'Arum cylindraceum Gasp. (Araceae) en Corse Type de document : Imprimé Auteurs : Alain Fridlender Année de publication : 1999 Article en page(s) : 297-309 Langues : Français (fre) Catégories : [CBNPMP-Thèmes] Structures des populations végétales
[CBNPMP-Thèmes] Stratégie de production de semences (fécondité)
[CBNPMP-Thèmes] Système de reproduction
[CBNPMP-Thèmes] Variabilité morphologique
[CBNPMP-Géographique] Corse (France)Mots-clés : Arum cylindraceum Gasp. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=137000
in Acta botanica gallica > 146 (4) (1999) . - 297-309Fridlender, A. 1999. Observations sur la biologie de l'Arum cylindraceum Gasp. (Araceae) en Corse. Acta botanica gallica, 146(4): 297-309.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité R625 P-286 Revue Centre de documentation Revues Consultable Patterns of genetic variation and breeding systems in rare plant species / J. D. Karron (1991)
Titre : Patterns of genetic variation and breeding systems in rare plant species Type de document : Extrait d'ouvrage Auteurs : J. D. Karron Année de publication : 1991 Importance : p. 87-98 Langues : Français (fre) Catégories : [CBNPMP-Thèmes] Système de reproduction
[CBNPMP-Thèmes] Distribution de la diversité génétiquePermalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=84384 Karron, JD. 1991. Patterns of genetic variation and breeding systems in rare plant species. In: Genetics and conservation of rare plants. Oxford University Press, New-York: 87-98.Les plantes rares possèdent-elles des particularités reproductives ? Bilan pour les espèces végétales pyrénéennes ; Cas d'étude : le genre Androsace (Primulaceae) / S. Caceres (2002)
PermalinkLes plantes et le sexe / Marc Philippe in La Garance voyageuse, 105 (2014)
PermalinkPollination ecology and patch-dependent reproductive success of the rare perennial Gentiana pneumonanthe L. / Theodōra Petanidou in New Phytologist, 129 (1) (1995)
PermalinkPollination ecology of Anthyllis vulneraria subsp. Vulgaris (Fabaceae) : nectar robbers as pollinators / Luis Navarro (2000)
PermalinkReconstruction of reproductive diversity in Hypericum perforatum L. opens novel strategies to manage apomixis / Fritz Matzk (2001)
PermalinkPermalinkReproductive biology of Anthyllis vulneraria subsp. vulgaris (Fabaceae) in northwestern Iberian Peninsula / Luis Navarro (1999)
PermalinkReproductive biology of the Iberian species of Potentilla L. (Rosaceae) / A Guillén in Anales del Jardín Botánico de Madrid (1979), 62 (1) (06/2005)
PermalinkThe ecology and evolution of clonal plants / Hans de Kroon (1997)
PermalinkThe significance of wide crossing in systematics / S.J. Owens (1998)
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