Heterospecific pollen receipt affects self pollen more than outcross pollen: implications for mixed-mating plants

摘要: Flowering plants often occur in mixed-species groups where interactions between them can both pre- and post-pollination. In post-pollination interactions, conspecific (CP) heterospecific pollen (HP) interact on the style previous work indicates that these often, but not always, lead to reduced fitness. However, over half of insect-pollinated species display a mixed mating system, self outcross CP could with HP, yet no study has evaluated effects types CP. We present test hypotheses for differential HP depending source timing arrival mixed-mating plant, Mimulus guttatus, one its donors (Helianthus exilis). found H. exilis tube growth fertilization success M. guttatus greater degree than pollen, only when were applied simultaneously. Our results indicate fitness consequences receipt b...