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Keywords:

  • microsatellites;
  • Mimulus;
  • outcrossing;
  • population structure;
  • self-fertilization

The evolution of self-fertilization from outcrossing is one of the most common evolutionary transitions in flowering plants. One goal of our research is to develop a linkage map based upon microsatellite loci in Mimulus guttatus and the selfing derivative M. nasutus in order to examine the genetics of one such transition. Here we present 19 primer pairs that detect polymorphisms between these two species. Within-population allelic surveys demonstrate the value of these markers for detailed analysis of population structure. We have found also that many of the microsatellites are conserved in more distantly related Mimulus species, and may thus serve as useful genetic markers for population genetic and comparative mapping studies within this diverse genus.