Slow-ripening fruits drove some Berchemia vines to abandon seed-making entirely
Researchers traced how an unusual plant reproductive system, where a species has both male-only and hermaphrodite individuals, evolved in the genus Berchemia (a group of woody vines and shrubs). Using genome-wide data, they found this rare mating strategy likely evolved once, driven by the metabolic burden of fruits that take two years to ripen, a trait that itself emerged during a period of global cooling...