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Corona and anther skirt in Hoya (Apocynaceae, Marsdenieae)
Stockholm University, Faculty of Science, Department of Botany.
2008 (English)In: Plant Systematics and Evolution, ISSN 0378-2697, E-ISSN 1615-6110, Vol. 271, no 02-jan, 9-17 p.Article in journal (Refereed) Published
Abstract [en]

The so called revolute margins of the corona in the genus Hoya (Marsdenieae) are homologous to the anther skirt. The anther skirt is primarily formed of two latero-basal lobes of the anther. In Hoya these lobes are fused with the underside of the basal process of the staminal corona and have evolved into a dominant structure of the gynostegium. Embedded in the anther skirt is the nectar tube, formed by the basal elongation of the guide rail. In many species, however, the function of nectar secretion for pollinator reward has been transferred to the anther skirt beneath the basal process of the corona. A survey of the Marsdenieae shows that the potential for developing an anther skirt is present in several other genera as well, though nowhere has it evolved into such elaborated structures as in Hoya.

Place, publisher, year, edition, pages
2008. Vol. 271, no 02-jan, 9-17 p.
Keyword [en]
Hoya, Marsdenia, corona, anther skirt, ontogeny, homology
National Category
URN: urn:nbn:se:su:diva-58544DOI: 10.1007/s00606-007-0602-6ISI: 000254486600002OAI: diva2:420970
authorCount :2Available from: 2011-06-07 Created: 2011-06-03 Last updated: 2011-06-07Bibliographically approved

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