Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.
大多数关于种子园理论，是以假定能发生随机交配和自花受精而
严重问题依据的。
Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.
大多数关于种子园理论，是以假定能发生随机交配和自花受精而严重问题依据的。
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
子蕨类的子体可经由配子体自交、异配子体交配两类配育系统或以无配生殖的方式产生，异配子体交配又可分异配子体自交和异配子体异交两种方式。
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