Homosporous ferns produce sporophytes by intra gametophytic selfing, inter gametophytic mating, or apogamy.Gametangium ontogeny, genetic load, and ploidy affect the mating system of each species.
摘要同型孢子蕨类孢子可经由同配子自交、异配子交配两类配育系统或以无配方式产,异配子交配又可分为异配子自交和异配子异交两种方式。