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'Fraxinus ornus L.' 
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Partager le résultat de cette rechercheAndrodioecy in the entomophilous tree Fraxinus ornus (Oleaceae) / Bertrand Dommée in New Phytologist, 143 (2) (August 1999)
Titre : Androdioecy in the entomophilous tree Fraxinus ornus (Oleaceae) Type de document : Imprimé Auteurs : Bertrand Dommée ; Alain Geslot ; John D. Thompson (1959-) ; Maurice Reille (1941-) ; Nicole Denelle Année de publication : 1999 Article en page(s) : 419-426 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Thématique] Stratégie de conservation ex situMots-clés : Fraxinus ornus L. Résumé : Androdioecy (the coexistence of two genders, cosexuals and males, in a single population) is a rare breeding system. In terms of functional gamete production, androdioecy has been reported in a small number of wind-pollinated and insect-pollinated species. In this study we examine the floral biology, stability of gender, and fruit and seed production after self-pollination and outcrossing pollination in a potentially androdioecious tree, Fraxinus ornus, in southern France. Individual trees have either hermaphrodite flowers or male flowers, the latter lacking a well-developed gynoecium. The two genders produce morphologically similar pollen and were present in 1∶1 or slightly male-biased ratios. Only hermaphrodites set fruit during 2–4 yr of observation at four different sites in southern France. Experimental pollinations of eight trees in two different sites showed that hermaphrodites produce viable pollen in dehiscent anthers and viable seeds. Thus, in terms of functional gamete production, F. ornus is a new case of functional androdioecy. Seven hermaphrodites were self-compatible, and such self-compatibility of hermaphrodites might improve the colonizing ability of F. ornus in a region where this species is actively expanding its range. Lien pérenne : DOI : 10.1046/j.1469-8137.1999.00442.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154142
in New Phytologist > 143 (2) (August 1999) . - 419-426Dommée, Bertrand, Geslot, Alain, Thompson, John D. (1959-), Reille, Maurice (1941-), Denelle, Nicole 1999 Androdioecy in the entomophilous tree Fraxinus ornus (Oleaceae). New Phytologist, 143(2): 419-426.Documents numériques
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Article (1999)URL
Titre : El carácter invasor del fresno de flor (Fraxinus ornus L.) en el norte de la península ibérica (Álava y norte de Burgos). Type de document : Imprimé Auteurs : Pedro Uribe-Echebarría Díaz Année de publication : 2010 Article en page(s) : 8-15 Langues : Espagnol (spa) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Géographique] Péninsule IbériqueMots-clés : Fraxinus ornus L. Résumé : Fraxinus ornus no es una especie autóctona en el norte de la Península Ibérica. Su presencia en Álava y Burgos se debe a la naturalización de los descendientes de árboles plantados por su carácter ornamental. El caso tiene interés práctico, pues afecta a los catálogos de especies amenazadas de la flora de dos Comunidades Autónomas, la del País Vasco y la de Castilla y León, donde dicho árbol figura respectivamente, bajo las categorías de “Rara” y de “Atención preferente”. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154168
in Toll Negre > 12 (Diciembre 2010) . - 8-15Uribe-Echebarría Díaz, Pedro 2010 El carácter invasor del fresno de flor (Fraxinus ornus L.) en el norte de la península ibérica (Álava y norte de Burgos). Toll Negre, 12: 8-15.Documents numériques
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Article (2010)Adobe Acrobat PDF
Titre : The effect of different stratification conditions on the germination of Fraxinus angustifolia Vahl. and F. ornus L. seeds Type de document : Imprimé Auteurs : Cristina Draghici ; Ioan Basile Abrudan Année de publication : 2011 Article en page(s) : 283-287 Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes
[CBNPMP-Thématique] Stratégie de conservation ex situ
[CBNPMP-Thématique] Germination
[CBNPMP-Thématique] DormanceMots-clés : Fraxinus angustifolia Vahl. Fraxinus ornus L. Résumé : The aim of the paper was to assess the impact of different stratification treatments recommended by the literature on the shortening of manna ash (F. ornus L.) and narrowleaved ash (F. angustifolia Vahl.) seed germination in order to identify a suitable pre-germination treatment for seedling production. Seeds of three Southern Romanian origins for both species were exposed to four stratification treatments (cold (3oC) and warm (20oC), with and without sand-peat medium). The highest percentage of germination (up to 87% for Fraxinus ornus and up to 71% for F. angustifolia) was recorded in the case of the stratified seeds with cold medium (3oC) and relatively constant seed moisture (between 45% and 65%) throughout the treatment. Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=154139
in Notulae botanicae Horti agrobotanici Cluj-Napoca > 39 (1) (2011) . - 283-287Draghici, Cristina, Abrudan, Ioan Basile 2011 The effect of different stratification conditions on the germination of Fraxinus angustifolia Vahl. and F. ornus L. seeds. Notulae botanicae Horti agrobotanici Cluj-Napoca, 39(1): 283-287.Documents numériques
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Article (2011)Adobe Acrobat PDF
