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IJBT Vol.07(2) [April 2008] >

Title: In vitro studies on development of gametophyte, sex-ontogeny and reproductive biology of a threatened fern, Microsorium punctatum (L.) Copel.
Authors: Srivastava, Ruchi
Srivastava, Jyoti
Behera, Sandip K
Khare, P B
Keywords: in vitro
Reproductive biology
Homosporous fern
Microsorium punctatum
Issue Date: Apr-2008
Publisher: CSIR
Abstract: Studies on reproductive biology vis-a-vis conservation of threatened state of the species, Microsorium punctatum, is the major concern of the present study. The life cycle starting from spore germination, gametophyte growth and differentiation, sex ontogeny and success of sporophyte formation through intra-and inter-gametophytic selfing was scrutenised and reproductive biology of this species was completely studied. The result indicates that the species could moderately be a good colonizer, as considerable number of sporophytes was produced through selfing, but in contrast very few plants were observed in the area of its occurrence. The threatened state could be due to unfavourable conditions for gametophyte growth, mating, subsequent slow pace of sporophyte development, and both epiphytic and terrestrial habit of the species.
Page(s): 266-269
ISSN: 0972-5849
Source: IJBT Vol.07(2) [April 2008]

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