Plant Diversity ›› 2010, Vol. 32 ›› Issue (01): 25-31.doi: 10.3724/SP.J.1143.2010.09140

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Substratum Affects the Gametophyte Development and Reproduction of Sinopteris grevilleoides(Sinopteridaceae), an Endangered Fern Endemic to China

WANG WeiQing 1, 2,CHENG Xiao1*, JIAO Yu1 ,CHEN GuiJu3   

  1. 1Botanical Garden, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China;3 Jining Institute of Agricultural Sciences, Jining 272031, China
  • Received:2009-07-28 Online:2010-02-25 Published:2010-02-25
  • Contact: CHENG Xiao

Abstract: Sinopteris grevilleoides is an endangered fern endemic to the region of Yunnan and Sichuan in southwest China. In this study, we investigated the effects of four different culture substrata on the development of gametophyte and reproduction of this fern. Cultured on different culture substrata, the fern showed different morphology of gametophyte. In humus soil, cordate prothalli did not bear archegonia, and thus the process of sexual reproduction ofSgrevilleoides could not be finished. The substratum composed of humus soil and original soil in ratio of 1∶1 was the most suitable substratum for gametophyte development and sexual reproduction of this species. Otherwise, infant sporophytes needed extra nutrient solution to sustain its growth on improved Knop′s agar medium.

Key words: Sinopteris grevilleoides

CLC Number: 

  • Q 945