Evolution in closely adjacent plant populations X: long-term persistence of prereproductive isolation at a mine boundary

Heredity (Edinb). 2006 Jul;97(1):33-7. doi: 10.1038/sj.hdy.6800835. Epub 2006 Apr 26.


Flowering time differences between metal-tolerant and nontolerant populations of the grass Anthoxanthum odoratum growing across a mine boundary have persisted for over 40 years. These flowering time differences result in a high degree of prezygotic genetic isolation (isolation index=0.43) between the tolerant mine populations and nontolerant pasture populations. Previous work showing genetic determination of flowering time and a high turnover of individual plants argues strongly for the selective maintenance of this difference.

MeSH terms

  • Ecosystem*
  • Flowers / genetics*
  • Flowers / growth & development
  • Genetic Speciation*
  • Geography
  • Metals / pharmacology*
  • Mining
  • Poaceae / genetics*
  • Poaceae / metabolism


  • Metals