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Genetics, Vol 144, 409-417, Copyright © 1996
INVESTIGATIONS |
Neutral Genetic Markers and Conservation Genetics: Simulated Germplasm Collections
T. M. Bataillon, J. L. David and D. J. Schoen
Laboratoire INRA-ENSAM d'Amelioration des Plantes, 34100 Montpellier Cedex 01, France and Department of Biology, McGill University, Montreal, Quebec, H3A 1B1, Canada
This study examines the use of neutral genetic markers to guide sampling from a large germplasm collection with the objective of establishing from it a smaller, but genetically representative sample. We simulated evolutionary change and germplasm sampling in a subdivided population of a diploid hermaphrodite annual plant to create an initially large collection. Several strategies of sampling from this collection were then compared. Our results show that a strategy based on information obtained from marker genes led to retention of the maximum number of neutral and nonneutral alleles in the smaller sample. This occurred when demes were composed of self-fertilizing individuals or when no migration occurred among demes, but not when demes of an outcrossing population were connected by high levels of migration.
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