单叶双盖蕨配子体发育的研究

Studies on the Development of Gametophyte in Diplazium subsinuatum

在人工条件下对我国产单叶双盖蕨(Diplazium subsinuatum(Wall.ex Hook.et Grev.)Tagawa)配子体发育进行了观察。结果表明单叶双盖蕨的孢子为两面体型,两侧对称,极面观为椭圆形,赤道面观为圆肾形,周壁具粗刺状或棒状突起;孢子萌发为书带蕨型;原叶体发育为铁线蕨型,成熟原叶体为心脏形。该研究试图为蕨类植物的系统分类积累资料。

The gametophyte development of Diplazium subsinuatum（Wall, ex Hook. et Grev. ） Tagawa from China was observed under artificial culture in this paper. The results show that the spore of Diplazium subsinuatum is bilaterally symmetric, elliptic in polar view, circinal-reniform in equatorial view, the echinate or baculate is formed by the perispore. The pattern of the spore germination is of Vittaria-type. The prothallial development is of Adiantum-type. The developed prothallial is cordiform. This study provides some information for system classification of pteridophytes.