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Abstract Detail

Evolutionary Developmental Biology (Evo-Devo)

Zhao , Hongbo  [1], Matthew, Koski [2], ASHMAN , TIA-LYNN RUTH [3].

When is white not white? Flowercolor variation in Fragaria(Rosaceae).

For most insects, the perception of flower color consists of a combination of light reflected in both the human-visible (400-700 nm) and ultraviolet (300-400 nm) spectrum, and flower color is discerned against vegetative backgrounds. Subtle spectral variation on petals, invisible to humans, may influence pollinator behavior, and could thus mediate plant fitness. While flower color can evolve in response to pollination context, abiotic conditions may influence flower color as well. In Fragaria species, petals are uniformly white in human-visible spectrum. Many species in Fragaria are sexual dimorphic (co-existence of females, males, and/ or hermaphrodites) and widely distributed, making it an opportune system in which to address whether subtle variation in flower color exists between sexes and/or among species or populations. To this end, we scored spectral reflectance of leaves and petals at the base and the apex from 57 populations of 5 species in Fragaria, and measured floral color parameters as well as floral color contrast from vegetation. We sought to answer the following questions: (1) What is the degree of flower and leaf color variation among species, among populations, and betweens sexes? (2) Is there the gradient of flower and/or leaf color with abotic variables or geography?

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1 - University of Pittsburgh, Department of Biological Sciences, 215 Clapp Hall, 4249 Fifth Avenue, Pittsburgh, , PA , 15260, USA
2 - University Of Pittsburgh, Biological Sciences, 4249 Fifth Avenue, 216 Clapp Hall, Pittsburgh, PA, 15260, USA
3 - University Of Pittsburgh, Department Of Biological Sciences, 4249 Fifth Avenue & Ruskin, Pittsburgh, PA, 15260, USA

none specified

Presentation Type: Poster:Posters for Topics
Session: P
Location: Eyrie/Boise Centre
Date: Monday, July 28th, 2014
Time: 5:30 PM
Number: PEV006
Abstract ID:485
Candidate for Awards:None

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