1.This study means significant to the ontogeny of Isoetes.

1.本研究对水韭属植发育具有借鉴意义。

2.Most of these genes have not been reported to relate to the haematogenesis in ontogeny.

2.这些基因大多数在胚胎分化造血发育中的作用尚未见报道。

3.The ontogeny of epiphyllous microsporangia Ginkgo indicated that the microsporophyll in Ginkgo is of phyllome origin.Possibly, the epiphyllous microsporangia is a peculiar chimera.

3.叶小孢子囊的发，表明的小孢子叶有叶性来源的性质，叶小孢子囊能是一种奇特的嵌合。

4.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.

4.摘要同型孢子蕨类的孢子经由同配子自交、异配子交配两类配育系统或以无配殖的方式产，异配子交配又分为异配子自交和异配子异交两种方式。