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子体自交、异
子体交
两类
育系统或以无
生殖的
产生,异
子体交
又可分为异
子体自交和异
子体异交两
。