Foraging Behavior and Pollination Efficiency of <i>Apis mellifera</i> L. on the Oil Tree Peony 'Feng Dan' (<i>Paeonia ostii</i> T. Hong et J.X. Zhang).

The one-way ANOVA followed by an LSD test revealed that the open-pollinated group showed a highly significant difference in the seed set rate compared with the wind-pollinated group ( p < 0.001) and the self-pollinated group ( p < 0.001), although a significant difference was also observed between the latter two groups ( p = 0.006) ( Figure 5 ).

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