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.
摘要同型类
体可经由同配
体自交、异配
体交配两类配育系统或以无配生殖
方式产生,异配
体交配又可分为异配
体自交和异配
体异交两种方式。