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.
摘要同型孢子蕨类的孢子体可经由同配子体自、异配子体
配两类配育系统或以无配
殖的方
,异配子体
配又可分为异配子体自
和异配子体异
两种方
。