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Abstract Detail

Genetics Section

Goldsmith, Nicholas [1], Shaw, Ruth [1].

Potential for ongoing adaptation of a native prairie plant.

Rapid global change has raised questions about the capacity of species to persist under novel conditions. A population’s persistence depends on the distribution of fitness and the genetic differences responsible for fitness variation. Mean fitness is a measure of a population’s current adaptation to an environment. Additive genetic variance is an estimate of a population’s immediate potential to adapt. Statistical issues have hindered previous assessment of the additive genetic variance for fitness, but aster models with random effects provide a more robust means of calculation. Both mean fitness and additive genetic variance for fitness are unique to a given population in a given environment. Using pedigreed populations of Rudbeckia hirta (Asteraceae, Black Eyed Susan), I aim to examine the current fitness and potential to increase fitness of multiple seed source populations in roadside environments. Results based on a field experiment will be presented.

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1 - University of Minnesota, Ecology, Evolution, and Behavior, 100 Ecology Building, 1987 Upper Buford Circle, St Paul, MN, 55108, USA

seed sourcing

Presentation Type: Poster:Posters for Sections
Session: P
Location: Hall D/The Shaw Conference Centre
Date: Monday, July 27th, 2015
Time: 5:30 PM
Number: PGN009
Abstract ID:489
Candidate for Awards:Genetics Section Poster Award

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