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Abstract Detail


DiMaria, Stephen [1].

Finding a sense of self: The evolution from outbreeding to selfing in morning glories.

The evolution from outbreeding to selfingis typically associated with various morphological changes: reduced pollen production, reduced nectar volume, reduced anther-stigma Poster presentation abstractsseparation, and decreased corolla length and width. Since these traits have appeared convergently in many independent selfing lineages, the genetic and selective reasons for these changes warrant further attention. Our understanding of the genetics remains in its early days. A better understanding of the genetics will provide insight into the selective pressures and evolutionary trajectories that are associated with the evolution from outbreeding to selfing. To further understand the genetics of this transition, pollen production was quantified in an F2 mapping population developed between the two morning glories, Ipomoea lacunosa and Ipomoea cordatotriloba. The results demonstrate that there is no correlation between pollen production and the other phenotypes measured in the F2 mapping population. Furthermore, hybrid plants produce less pollen on average than either parent, suggesting a hybrid inviability. This study provides insight into the genetics of the selfing syndrome and of reproductive isolation behind the evolution of plants from outbreeding to selfing.

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1 - Duke University, Biology, 295 Essex Fells Court, Yorktown Heights, NY, 10598, USA


Presentation Type: Poster
Session: P, Ecology Section Posters
Location: Exhibit Hall/Savannah International Trade and Convention Center
Date: Monday, August 1st, 2016
Time: 5:30 PM This poster will be presented at 6:15 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PEC040
Abstract ID:943
Candidate for Awards:Ecological Section Best Undergraduate Presentation Award

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