Arbuscular Mycorrhizal Fungal Diversity in Sugarcane Rhizosphere in Relation with Soil Properties
Arbuscular mycorrhizal (AM) species diversity and their root colonization patterns may vary in a plant species as influenced by soil environmental and biological factors. In the present study, sugarcane rhizospheric soils were collected from 41 main sugarcane producing tehsil places belonging to 10 districts from Maharashtra, India. Rhizospheric soil samples and roots were analyzed for spore density, relative abundance and frequency of AM spores at genus as well as at species level, extent of AM colonization in roots and various soil chemical properties. Soil sample from Jalgaon district possessed maximum spore density and AM root colonization. Genus Glomus exhibited highest relative abundance with maximum frequency of 32.55%. Species wise, Glomus fasciculatum possessed highest relative abundance and maximum frequency was observed in case of Glomus fasciculatum, Glomus intraradices, Glomus mosseae and Glomus versiforme. Maximum similarity of AM spores was recorded between Satara and Sangli districts which may be because of almost similar soil pH profile. Data obtained after cluster analysis represented the close relationship between spore density, AM root colonization and soil Cu, Zn and Fe concentrations. A statistically significant positive correlation was also found when AM spore density and root colonization was compared with soil Cu, Zn and Fe contents. This kind of data can be used to predict type of AM fungi to be used as bioinoculant in particular region.
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