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abot90-5
Title
Pollen Germination and Tube Growth in the Snow Buttercup, <em>Ranunculus adoneus
Author
Candace Galen University of Missouri Division of Biological Sciences Columbia Missouri 65211-7400 USA
Keywords
flower heliotropism, maternal environmental effects, paternal environmental effects, Ranunculaceae, Ranunculus adoneus, solar-tr
Description
BSA Plant Images Online - Pollen Germination and Tube Growth in the Snow Buttercup, Ranunculus adoneus
Pollen germination and tube growth in the snow buttercup, <IT>Ranunculus adoneus,</IT> photographed under fluorescence microscopy. Snow buttercup flowers exhibit heliotropism, the capacity to track the sun's rays over the course of the day. The adaptive significance of solar tracking in snow buttercups is mediated through the impact of flower heliotropism on paternal and maternal floral environments. In controlled crosses, pollen from solar-tracking flowers has higher germination success than pollen from experimentally restrained flowers. Solar tracking in recipient flowers also enhances pollen germination and increases pollen tube to ovule ratios.
Publisher
Botanical Society of America
Additional data
copyright: BSA,
license: http://images.botany.org/index.html#license
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