Abstract

Present work is an attempt to study the arbuscular mycorrhizal fungal diversity of Achara mangrove forest located at Maharashtra on the west coast of India. Of the twelve mangrove species screened for arbuscular mycorrhizal colonization 10 species viz ., Rhizophora apiculata , Rhizophora mucronata (Rhizophoraceae), Sonneratia alba (Sonneratiaceae), Avicennia marina, A. officinalis (Avicenniaceae), Excoecaria agallocha, Aegiceras corniculatum (Euphorbiaceae), Acanthus illicifolius (Acanthaceae) Xylocarpus granatum (Meliaceae) were found to be mycorrhizal. The non mycorrhizal plants were Kandelia candel and Ceriops tagal (Rhizophoraceae). Arbuscular mycorrhizal colonization was found to be maximum in Sonneretia alba (83%), and was least in Avicennia marina (6%). The spore density of AM fungal spores ranged from 14 spores/100g soil in Rhizophora mucronata to 78 spores/100g rhizosphere soil in Excoecaria agallocha .. Among the 15 AM species reported from 12 mangrove species Glomus macrocarpum (66%) was the most frequently occurring AM fungal species followed by Glomus fasciculatum (50%), Glomus claroideum (42%) and Acaulospora laevis (42%).

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