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Longevity of Polygala vayredae flowers after different pollination treatments: Male, bagged flowers with all the available pollen removed; Female, bagged flowers hand-pollinated with xenogamous pollen; Male + Female, bagged flowers with pollen removed and hand pollinated; Bagged, bagged unmanipulated flowers; OP, open-pollinated flowers from 2005 and 2006. Data from 2005 were obtained from Castro et al. (2008a). Different letters show significant differences at P < 0·05.
