| No differences were noted in pollen germination, pollen tube growth or fertilization between experimental tests of xenogamy and geitonogamy in S. mucugensis. |
| Both species use a mixed breeding system, consisting of xenogamy, geitonogamy, and autogamy. |
| Artificial pollination experiments showed that T. sinense is self-compatible, with facultative xenogamy and no indication of agamospermy. |
| There are no available data on the breeding system of C. longii to gauge the predominance of autogamy or xenogamy, or seed production due to apomixis. |
| However, the fruit set, seed mass and germinate rate from autogamy are significantly lower than that from xenogamy and control. |
| The germination rate of seeds from xenogamy and control treatment was significantly higher than that from autogamy treatments. |
