Note on the pollination of Calla palustris L. (Araceae)

Autor(en)

Marion Chartier, Jean-Loup Fernandez, David Prehsler, Jürg Schönenberger, Marc Gibernau

Abstrakt

Calla palustris L., despite its wide distribution in the Northern Hemisphere, is poorly understood with respect to its ecology. We made observations on the flowering sequence and on floral visitors in a natural population in the Vosges, France, and conducted mating system experiments in the Botanical Garden of the University of Vienna.
The anthesis of Calla inflorescences lasted approximately ten days. It started by a female phase with stigmas becoming receptive from the base to the top of the inflorescences. Stamen dehiscence followed the same pattern and the male phase started towards the end or after completion of the female phase. Our experiments showed that Calla is at least partly self-pollinated or apomictic, as ca. 20 % of the gynoecia developed into fruits and produced seeds without pollinators. Entomophily cannot be excluded, as we observed few small Coleoptera and Diptera visiting the inflorescences. Anemophily, although less probable, remains to be tested.

Organisation(en)

Department für Botanik und Biodiversitätsforschung, Core Facility Botanischer Garten

Externe Organisation(en)

Université Joseph-Fourier (Grenoble-I), Unité Mixte de Recherche Écologie des Forêts de Guyane, Université de Corse Pasquale Paoli

Journal

Aroideana : Journal of the International Aroid Society

Band

40

Seiten

71-83

ISSN

0197-4033

Publikationsdatum

2017

Peer-reviewed

Ja

ÖFOS 2012

106042 Systematische Botanik, 106008 Botanik, 106012 Evolutionsforschung

Schlagwörter

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/af49fea8-1773-4f68-91f5-c584b2b68b84