Finally we mapped the populations with arcgis and

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coordinates. Finally we mapped the populations with ArcGIS and Google Earth. As hypothesized elevation, longitude, and precipitation all contribute to the distribution of flower color in Erythranthe discolor. Prior research on other species of flowering plants with flower color polymorphism had similar findings (Schemske and Bierzychudek 2001, 2007, Carlson and Holsinger 2015, Warren and Mackenzie 2001). Anthocyanins, the pigment causing pink, purple and blue in flowers are associated with tolerance of abiotic stress such as drought and heat (Ecology and Evolution of Flowers, 2006). These pigments may have arisen in vegetative tissues in response to increased ultraviolet light and drought stress and while still maintaining their original stress-related
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functions they may also facilitate pollinator attraction. Prior studies have shown that flower color correlates with anthocyanin content in vegetative tissues and that individuals with increased anthocyanin pigments often tolerate stressful conditions like drought and heat better than morphs with less anthocyanin (Strauss & Whittall 2006). Future research can further investigate the relationship between precipitation and the distribution of flower color morphs by controlling the availability of water in a lab setting to test whether the pink morph has a greater fitness advantage under drought condition.
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  • Spring '18
  • many
  • Geographic coordinate system, Ronald Fisher, Mimicry, Heterozygote advantage

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