Effects on morphological development of gametophytes of three fern species under different moisture conditions

• Main Authors: GAO Xiaowen, ZHOU Shiyu, BIAN Zhujing, WANG Qinghua, DAI Xiling
• Format: Article
• Language: English
• Published: Academic Journals Center of Shanghai Normal University 2018-12-01
• Series: Journal of Shanghai Normal University (Natural Sciences)
• Subjects: ferns;<i>Lygodium japonicum</i>;<i>Ceratopteris thalictroide</i>;<i>Woodwardia japonica</i>;gametophytes;morphological development
• Online Access: http://qktg.shnu.edu.cn/zrb/shsfqkszrb/ch/reader/view_abstract.aspx?file_no=20180613

Effects of water conditions on the gametophyte development of three fern species with different evolutionary statue,which are <i>Lygodium japonicum</i>,<i>Ceratopteris thalictroides</i>,and <i>Woodwardia japonica,</i>were studied in this study.The results showed as follow:1) The germination rate becomes higher,and the filament length of the three ferns becomes longer with the moisture increasing;2) Gametophytes tend to develop into male gametophytes under water insufficient conditions,and easy to develop into amphoteric or female gametophytes under water sufficient conditions;3) The morphology of secondary rhizoids,the number of trichomes were affected by moisture conditions;4) The type of the spore germinations,the developmental type of the gametophyte and the morphological of mature prothallus are both stable traits,which can be used as a basis for classification and identification of ferns.