intra-

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.

摘要蕨类的可经由配交、异配交配两类配系统或以无配生殖的方式产生，异配交配又可分为异配交和异配异交两种方式。