Four months after performing the tests to evaluate pollination system, half of the fruits from self-pollination and geitonogamy
were aborted, meanwhile those produced from xenogamy or natural pollination continued developing.
will be favored when some geitonogamy occurs in CH flowers and
depression is substantial, as long as there is a positive correlation between geitonogamy and CH flower production.
that increased allocation to CH reproduction may increase geitonogamy,
threshold departure rules, which should reduce geitonogamy if rewards
Thus, geitonogamy is probably rare or impossible in
that nectar (or lack thereof) can directly decrease geitonogamy does,
experienced less geitonogamy, relative to inflorescences with
perspective, the potential for inbreeding via geitonogamy and inbreeding
, and thus selfing, would be the most frequent mechanism of pollen transfer.
The frequency of geitonogamy can be reduced in some species, such as herbs, simply because acropetal growth should result in a plant architecture where flowers in the "male" phase are spatially separated from flowers in the "female" phase.
Dichogamous systems would appear to be advantageous for species where geitonogamy may "clog" stigmatic surfaces with self-pollen (Bawa & Opler, 1975; Yeo, 1975), thereby preventing outcrossed pollen from reaching the stigmatic surface.