Title: Gametophyte development of Acystopteris japonica and its systematic significance
Abstract: The gametophyte development of Acystopteris japonica was cultured in humus soil of wild pro-hibitat and its gametophyte development was observed by microscope.The results showed that the spores are bilateral type, monolete,elliptical in polar view,kidney-shape in equatorial view.Spores have not perispore and the baculate ornamentation was formed by the exine.The type of spore germination is of Vittaria-type while that of gametophyte development is Adiantum-type.Filamentous were 4-7 cells long,and the prothallial plates is somewhat spatulate with 3-5 cells wide.The mature prothallium was cordate and bare.Primary rhizoids have chloroplasts and archegonium are relatively shorter.The gametophyte development was very quickly,its rhizoids were usually bifurcated and enlarged. The antheridia consist of 3 cells and the archegonia always are somewhat curved.Globular bodies were firstly observed in the present study with yet unknown function.Under suitable light and temperature,the percentage of gametophyte to the sporophyte was up to 95%,and the survival ratio of transplantation was found to be over 89%.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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