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Nectar secretion and pollination in orchids
Nectar is the most advantageous reward for orchid pollinators, and its secretion is a dynamic process occurring throughout the life of the flower. Stpiczynska (pp. 191-197) shows that pollination does not limit nectar secretion, but does influence flower longevity. Flower position within the inflorescence is found to determine the availability of nectar to pollinators.
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