Question

Evidence of post-pollination barriers among three colour morphs of the deceptive orchid dactylorhiza sambucina

Answer 1

These populations were characterized by the presence of a rare pink morph which is sympatric with the more frequent yellow and red morphs. In addition, final plant fertility was evaluated through percentages of embryo-containing seeds produced in both natural conditions and hand-pollination experiments. Results showed that pollinator preferences were independent of the morph frequencies and thus do not promote the predicted negative frequency-dependent selection

Answer 2

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