ploidy

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同配自、异配配两类配系统或以无配生殖的方式产生，异配配又分为异配自和异配异两种方式。