Study on gametophyte development of Diplazium pinfaense.

Le résumé fourni par la source

The gametophyte development process of Diplazium pinfaense spores was observed in the laboratory.The results show that its spore with a monolete is of broad and transparent perisporium,its spore is oval shape in equatorial view and kidney shape in polar view,its spore begins to germinates in 5 days after sowing,its spore germination presents a vittaria-type,the germ filament with 2～4 cells begins to form in 9 days after sowing spores,the prothallial plate begins to form in 17 days after sowing spores,the prothallia begins to form in 26 days after sowing spores and the gametophyte develops an Adiantum-type,the mature prothallium is a symmetric heart-shaped with two broad wings.The primary rhizoid contains some chloroplasts,nudity prothallia without trichomes and a short and upright archegonium.The normal development of the prothallia can tolerate the weak natural light for adapting the habitat with a high canopy density

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