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Article: POLLEN CARRYOVER, GEITONOGAMY, AND THE EVOLUTION OF DECEPTIVE POLLINATION SYSTEMS IN ORCHIDS.
- Article from:
- Ecology
- Article date:
- December 1, 1999
- Author:
CopyrightCOPYRIGHT 1999 Ecological Society of America. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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S. D. JOHNSON [1,3]
L. A. NILSSON [2]
(1.) School of Botany and Zoology, University of Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa
(2.) Department of Systematic Botany, University of Uppsala, Villavagen 6, S-75236 Uppsala, Sweden
Abstract. Geitonogamy (transfer of pollen among flowers on the same plant) may lead to reduced outcrossing and interfere with sex function. Orchids with pollen packaged into pollinaria would be expected to be particularly vulnerable to the loss of cross-mating opportunities imposed by geitonogamy. We tested the hypothesis that the absence of floral rewards in many orchid species is ...