The origins of reproductive isolation in plants.

@article{Baack2015TheOO,
  title={The origins of reproductive isolation in plants.},
  author={Eric J Baack and Maria Clara Melo and Loren H. Rieseberg and Daniel Ortiz-Barrientos},
  journal={The New phytologist},
  year={2015},
  volume={207 4},
  pages={
          968-84
        }
}
Reproductive isolation in plants occurs through multiple barriers that restrict gene flow between populations, but their origins remain uncertain. Work in the past decade has shown that postpollination barriers, such as the failure to form hybrid seeds or sterility of hybrid offspring, are often less strong than prepollination barriers. Evidence implicates multiple evolutionary forces in the origins of reproductive barriers, including mutation, stochastic processes and natural selection… Expand
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