3.2 Fruit and seed characteristics
Self-pollination (Figure 2A) and nectar addition (Figure 2B) resulted in
more shriveled seeds compared with cross-pollination (Figure 2C) and
natural conditions (Figure 2D). The proportion of shriveled seeds after
self-pollination and nectar addition was significantly higher than after
cross-pollination and natural conditions (all p < 0.01) (Table 1).
There were significant differences in the proportion of shriveled seeds
between self-pollination and artificial nectar addition (p < 0.01)
(Table 1), but not between cross-pollination and natural conditions (p =
0.703 > 0.05).
There was no significant difference in fruit length and seed number per
fruit among the four treatments (all p>0.05) (Table 1). Fruit weight
and seed weight per fruit of self-pollination and nectar addition was
significantly lower than that of cross-pollination and natural
conditions (all p < 0.01) (Table 1). There were no significant
differences in fruit weight and seed weight per fruit between
cross-pollination and natural conditions (p > 0.05), and between
self-pollination and artificial nectar addition (p > 0.05) (Table 1).
Though fruit width after self-pollination was significantly lower than
natural conditions (p <0.05), there was no significant difference in
fruit width after cross-pollination, artificial nectar addition and
natural conditions (all p > 0.05) (Table 1).