Correlations between Floral Diversity and Pollination Patterns in Pedicularis (Scrophulariaceae)
Correlations between Floral Diversity and Pollination Patterns in Pedicularis (Scrophulariaceae)
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发表时间：
2003
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通讯作者：
L. Wen
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作者：
L. Wen
Flower forms of Pedicularis (Scrophulariaceae) display one of the greatest diversities within a particular genus of the flowering plants. The major pollinators of Pedicularis are the bumblebees ( Bombus ). In North America, floral resources of some species of Pedicularis may be shared by bumblebees,mason bees ( Osmia ) and humingbirds ( Selasporus ) as pollinators. Pollen grains are transferred by bumblebees and mason bees foraging for nectars and /or pollen, and by hummingbirds foraging for nectars.The different pollination mechanisms require very specific foraging patterns to deposit and release pollen.In this paper corolla forms and their evolutionary trends are discussed in relation to pollination patterns and pollen morphology. The foraging behaviors of pollinator selection as a force may have determined floral structure and function diversity. Floral characters are closely tied to pollinators and their pollination behaviors. The functions of all flowers are for sexual reproduction of the plants following pollination and fertilization. Pedicularis plants and pollinators are interdependent in terms of corolla forms, floral function and phenology of bloom. It seems that the corolla forms are not quite strictly congruent with their pollen morphology. Comparison of pollination patterns in different species from geographically isolated regions of North America, Japan and the Himalayas,it is evidented that Pedicularis species with same corolla form have similar pollination syndromes. There exists a high correlation between floral forms and pollination patterns in Pedicularis .
