Collaborative Research: RUI: Floral Function and Phylogeny in Penstemon: Tests of Pollen Presentation Theory

合作研究：RUI：Penstemon 的花功能和系统发育：花粉呈现理论的检验

• 批准号: 9708334
• 负责人: Paul Wilson
• 金额: $ 8.1万
• 依托单位: The University Corporation, Northridge
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2002-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9708334&HistoricalAwards=false
• 关键词: Collaborative; Research; RUI; Floral; Function

ABSTRACT 97-07330 Wilson, Thomson, Wolfe, Armbruster Collaborative research: Floral function and phylogeny in Penstemon: tests of pollen presentation theory This research examines the evolution of floral traits within the plant genus Penstemon, a member of the snapdragon family. The investigators will derive a "family tree" of Penstemon using DNA sequences to estimate genetic similarities, so that observed changes in floral characters can be interpreted with a proper understanding of species relationships. Ecological research will be focused on ways that Penstemon anther characteristics influence size and number of pollen doses, and ultimately, plant fitness in hummingbird- and bee-pollinated plants. An untested new theory predicts that when pollinating animals visit frequently, plants that release pollen from their anthers in smaller doses per visit will donate more pollen to other plants. As the first test of pollen presentation theory, this research will help decide whether these models are correct and useful. Improved knowledge of pollination mechanics can help improve the economic evaluation of alternative pollinators of agricultural crops.

摘要97-07330 Wilson，Thomson，Wolfe，Armbruster合作研究：Penstemon中的花卉功能和系统发育：花粉演示理论的测试这项研究研究了Snapdragon家族的成员Pertanus Penstemon中花卉特征的演变。研究人员将使用DNA序列得出Penstemon的“家谱”来估计遗传相似性，因此观察到的花卉特征的变化可以通过对物种关系的适当理解来解释。生态学研究将集中在Penstemon Anther特征影响花粉剂量的大小和数量的方式上，最终是蜂鸟和蜜蜂 - 授粉植物的植物健身。 一个未经测试的新理论预测，当授粉动物经常访问时，以每次访问较小的剂量释放花粉的植物将向其他植物捐赠更多花粉。作为花粉演示理论的第一个测试，这项研究将有助于确定这些模型是否正确且有用。提高对授粉力学的知识可以帮助改善农作物的替代传粉媒介的经济评估。