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.

摘要同型孢蕨类的孢可经由同配自交、配交配两类配系统或以无配生殖的方式产生，配交配又可分为配自交和配交两种方式。