Fig. 7.

Outcross pollination in emasculated reproductive units. (A) The percentage of carpels per reproductive unit that received pollen when self-pollination was prevented by emasculation (n = 23) compared with untreated reproductive units in which self-pollination could occur (n = 23). Treatments were significantly different (t = 7·07, d.f. = 44, ***P < 0·0001). (B) Pollen load per carpel in emasculated reproductive units (n = 23) compared with open-pollinated reproductive units (n = 23). Treatments were significantly different (unequal variance t-test: t′ = 5·12, d.f. = 32·42, ***P < 0·0001). Error bars = 95 % confidence interval.