Nom du corpus

Corpus Systématique Végétale

Titre du document

Reproductive biology of Frangula alnus ( Rhamnaceae ) in southern Spain

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Rhamnaceae
  • Frangula
  • Diptera
  • Coleoptera
  • Hymenoptera
  • Mecoptera
  • Breeding system
  • phenology
  • pollination biology
  • protandry
  • reproductive success
  • self-incompatibility
Nom du fichier dans la ressource
Syst_veg6_v2_025448
Auteur(s)
  • Diego Medan
Affiliation(s)
  • Cátedra de Botánica, Facultad de Agronomía de la U.B.A., Avda. San Martín 4453, RA-1417, Buenos Aires, Argentina
Résumé

Various aspects of the reproductive biology of the perennial hermaphroditeFrangula alnus Mill. were studied in two populations located in the province of Cádiz, southern Spain. Flowering extends from the second week of May to early July. The small, whitegreenish, entomophilous flowers are incompletely protandrous and last 8–10 days, but pollen transfer takes place only on days 1–3. A very weak, pleasant odour along with nectar and pollen attract over 45 insect species, of which 21 are probable pollinators. These are mainlyDiptera but also includeHymenoptera and the unusual (as flower visitors)Mecoptera. Reproduction is exclusively sexual and strictly xenogamous, with pollen transfer depending solely on insect vectors. Although flower morphology and individual flower phenology do not fully prevent self-pollination, and geitonogamy can easily take place, the level of autogamy was negligible. Therefore, some self-incompatibility mechanism is operative in this species. Only 2.8% of open-pollinated flowers set fruit. At the flower level, fruit initiation was apparently limited by availability of cross-pollen, which in turn seemed influenced by the structure of the population. The seed/ovule ratio in ripe fruits was ca. 50%. Predispersal (maternal) reproductive success (percent ovules becoming filled seeds) was 1.42%. For mature individuals this corresponded to ca. 430 to 1560 potential offspring per year.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - evolutionary biology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - physiologie vegetale et developpement
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Plant Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - plant sciences
  • 1 - science ; 2 - evolutionary biology
Identifiant ISTEX
7C261721E7C5ED32DFD0DD80E55467745CFDEE23
Revue

Plant Systematics and Evolution

Année de publication
1994
Présence de XML structuré
Non
Score qualité du texte
9.448
Version PDF
1.3
Type de publication
Journal
ark:/67375/1BB-09XBH3DN-R
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