Sexual selection is known to shape plant traits that affect access to mates during the pollination phase, but it is less well understood to what extent it affects traits relevant to interactions between pollen and pistils after pollination. This is surprising, because both of the two key modes of sexual selection, male–male competition and female choice, could plausibly operate during pollen–pistil interactions where physical male–female contact occurs. Here, we consider how the key processes of sexual selection might affect traits involved in pollen–pistil interactions, including ‘Fisherian runaway’ and ‘good-genes’ models. We review aspects of the molecular and cellular biology of pollen–pistil interactions on which sexual selection could act and point to research that is needed to investigate them.

众所周知，性选择会塑造影响授粉阶段获得交配的植物性状，但人们不太清楚它在多大程度上影响与授粉后花粉和雌蕊之间相互作用相关的性状。这是令人惊讶的，因为性选择的两种关键模式，雄性-雄性竞争和雌性选择，都可能在发生雄性-雌性身体接触的花粉-雌蕊相互作用期间起作用。在这里，我们考虑性选择的关键过程如何影响花粉-雌蕊相互作用的特征，包括“费舍尔失控”和“良好基因”模型。我们回顾了花粉-雌蕊相互作用的分子和细胞生物学的各个方面，并指出了研究它们所需的研究。