The development of gametophytes and its′ antheridiogen system of Dryopteris erythrosora

The effects of light and darkness on spore germination percentage of the fern Dryopteris erythrosora are investigated.Moreover,the effects of antheridiogen of D.erythrosora on its′ spores germination and gametophyte development and on spores germination,gametophyte development of Ceratopteris thalictroides are investigated respectively.The results exhibit:① The light illumination is not the prerequisite of spore germination of D.erythrosora.However,the light can markedly promote the spore germination.② In light condition,antheridiogen of D.erythrosora promotes the spore germination and the development of the male gametophytes,but inhibits the development of the bisexual gametophytes.But in darkness,the antheridiogen does not promote the spore germination.③ The antheridiogen of D.erythrosora at different stage of gametophyte development exhibits no obvious effects on the spores germination and gametophyte development of Ceratopteris.