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Plant Diversity ›› 2013, Vol. 35 ›› Issue (4): 522-528.DOI: 10.7677/ynzwyj201312132

• 研究论文 • 上一篇    


 邵文1、2, 陆树刚2   

  1. 1 上海辰山植物园,中国科学院上海辰山植物科学研究中心,上海201602;
    2 云南大学生态学与地植物学研究所,云南 昆明650091
  • 收稿日期:2012-10-28 出版日期:2013-07-25 发布日期:2013-03-01
  • 基金资助:

    The National Natural Science Foundation of China (31200162)

Comparative Morphology of Development of the Gametophyte and Juvenile Sporophyte of Phymatopteris

 SHAO  Wen-1、2, LIU  Shu-Gang-2   

  1. 1 Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences, Shanghai Chenshan Botanical Garden,
    Shanghai 201602, China; 2 Institute of Ecology and Geobotany, Yunnan University, Kunming 650091, China
  • Received:2012-10-28 Online:2013-07-25 Published:2013-03-01



关键词: 配子体, 幼孢子体, 假瘤蕨属


The development of the gametophyte and juvenile sporophyte are important in the systematics of fern groups, yet have been seldom studied in the genus Phymatopteris. Three species of Phymatopteris are described and compared in the present paper. It was established that spores were monolete, germination was Vittariatype, and prothallial development was Drynariatype. Germ filaments developed 2-6 cells, and mature prothalli were cordate with prominent cushions in the middle of two wings. Prothalli were usually bisexual. Antheridia were produced 48-55 days after sowing, and archegonia formed 15-18 days after the production of antheridia. Embryos began to develop in the cushion of the gametophyte 80-100 days after sowing. Spherical embryos differentiated into the first leaf, the first root, and shoot apex, and then into the juvenile sporophyte. Unicellular hairs appeared on the margin of prothalli and multicellular uniseriate trichomes developed on the dorsal surface of prothalli, especially in the cushion, to surround and protect the embryo and juvenile sporophyte. Differences in size of spores, germination time, characteristics of the filaments and adult prothallus, and time of gametangia formation were documented among the three species. Gametophytes in soil medium usually grew asynchronously, which may have been caused by vegetative generation or asynchronous germination of spores.

Key words: Gametophyte, Juvenile sporophyte, Phymatopteris