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.

摘要同型子蕨子体经由同配子体自交、异配子体交配两配系统或以无配生殖方式产生，异配子体交配又异配子体自交和异配子体异交两种方式。