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.

摘要同型孢子蕨类的孢子体可经由同子体自交、异子体交类育系统或以无生殖的式产生，异子体交又可分为异子体自交和异子体异交式。