This study is the first to demonstrate pollen limitation in a mass-flowering tree.
The study demonstrates extensive variation in floral scent among populations of a geographically widespread species, Arabis alpina.
Evolutionary changes in reproductive compatibility is an important process contributing to the high levels of species diversity in Dendrobium.
Unexpectedly high levels of molecular diversity are found within populations of Sorbus domestica, irrespective of their location.
Results show that full-length SRKb is localized primarily at the plasma membrane and the secreted eSRKb product is not required for self-incompatibility.
Even though P. virginiana is a widespread species, fragmented populations experience significant reductions in fruit set and pollen limitation.
A new paper in Annals of Botany shows live images of pollen behaviour during pollination.
Preservation of cultivar purity is a particular challenge for plants that are self-incompatible and have easily germinating seeds and vigorously spreading rhizomes.