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Bulletin of Botanical Research ›› 2017, Vol. 37 ›› Issue (1): 8-14.doi: 10.7525/j.issn.1673-5102.2017.01.002

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Development of Gametophyte and Young Sporophyte of the Fern Aleuritopteris argentea

CHEN Si-Qi, JIAN Jin-Jing, ZHANG Yan, DAI Xi-Ling   

  1. College of Life and Environment Sciences, Shanghai Normal University, Shanghai 200234
  • Received:2016-09-09 Online:2017-01-15 Published:2017-03-06
  • Supported by:
    The Shanghai Natural Science Foundation(15ZR1430500);The issue of Shanghai science and technology committee (14DZ2260400);The problem of Shanghai Administration on City Appearance and Environmental Sanitation(G152430);The Innovation project of University Students of Shanghai Municipal Education Commission(A-9103-14-007111)

Abstract: Aleuritopteris argentea is a small ornamental ferns. We observed the developmental features of gametophyte and sporophyte of A.argentea cultured in Knop's medium and humus medium using microscopical techniques, and studied the optimum pH value for the gametophyte development. The results show that:(1)the spores are yellow-brown, tetrahedral, and trilete with reticulate ornamentations. Polar view is triangle circle and the equatorial view is nearly semicircular. The germination is Vittaria-type and the gametophyte development is Ceratopteris-type. The mature gametophytes are cordate. The archegonia and antheridia are leptosporangiate-type. No hairs are formed during gametophyte development. The above features of the gametophytes in the fern A.argentea are stable. (2)the enhancement the pH value in 7.0-9.0 is beneficial for spore germination and gametophyte development. (3)the spore and gametophytes develop on humus medium produced seedlings after 7-8 weeks. The viability of sporophytes obtain in this medium are strong with developed roots and easy to transplant. Percentage of seedling emergency reaches to 90%. Our investigation is benefit for the artificial propagation and evolution of the resource plant A.argentea.

Key words: Aleuritopteris argentea, gametophyte development, young sporophyte, pH

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