Figure 1.

Results of the pollination experiment conducted on Argyreia siamensis in the western population (Ratchaburi, Thailand) showing (A) fruit weight and (B) total seed weight for each experimental treatment (open, hand cross-pollinated, hand self-pollinated, and closed) (mean ± SE). The hand self-pollinated and closed treatments never produced seeds, so these treatments are absent from the graph on the right. Within each graph, treatments with different letters are significantly different (p < 0.05).