Tropical Plant Research

Tropical Plant Research

An International Journal by Society for Tropical Plant Research

ISSN (E): 2349-1183 ISSN (P): 2349-9265
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2017, VOLUME 4 ISSUE 3Pages: 396-400

Studies on the reproductive biology of Wiesnerella denudata (Mitt.) Steph. - a rare hepatic

Anu Sharma* and Madhu Bhagat
*Department of Botany, University of Jammu, Jammu-180006, Jummu & Kashmir, India
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Abstract:
Wiesnerella denudata is a rare monotypic thalloid hepatic of the family Wiesnerellaceae (Order: Marchantiales). During the course of present investigation, ten districts of Jammu region in Jammu& Kashmir were explored, but the only single population was collected from Dhera Ki Gali, Poonch. As it is a rare hepatic, the present communication deals with its reproductive biology. It was interesting to note that the species does not undergo propagation by any vegetative means. Further, the thalli with only female receptacles were recorded. However, well-developed sporogonium differentiated into the foot, seta and capsule were observed along with a very high spore-elater ratio. The status of the species in the Jammu region of Jammu and Kashmir (North-West Himalayas) with special emphasis on its unique reproductive biology and the consequences of its dependence on only a single mode of propagation (sexual) have been discussed.
<strong>A,</strong> Patch of <em>Wiesnerella denudata</em> growing on epilithic habitat; <strong>B,</strong>  Thalli in dorsal and ventral view; <strong>C,</strong> Whole mount of epidermal peeling showing air pore; <strong>D,</strong> Whole mount of smooth walled and tuberculated rhizoids showing hyphal strands and a vesicle; <strong>E,</strong> V.S. of thallus showing upper photosynthetic and lower storage zone (Inset- Notice raised air pore).

Fig.: A, Patch of Wiesnerella denudata growing on epilithic habitat; B, Thalli in dorsal and ventral view; C, Whole mount of epidermal peeling showing air pore; D, Whole mount of smooth walled and tuberculated rhizoids showing hyphal strands and a vesicle; E, V.S. of thallus showing upper photosynthetic and lower storage zone (Inset- Notice raised air pore).


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