Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810038695
Authors: ASHA A. N.
Advisor: Dr. P. JONES NIRMALNATH
Title: IMPACT OF ELEVATED CARBON DIOXIDE AND / OR TEMPERATURE ON ARBUSCULAR MYCORRHIZAL FUNGAL COMMUNTIY IN GROUNDNUT RHIZOSPHERE SOIL
Publisher: University of Agricultural Sciences, Dharwad
Language: en
Type: Thesis
Agrotags: null
Keywords: IMPACT OF ELEVATED CARBON DIOXIDE AND / OR TEMPERATURE ON ARBUSCULAR MYCORRHIZAL FUNGAL COMMUNTIY IN GROUNDNUT RHIZOSPHERE SOIL
Abstract: Investigations were carried to study the impact of elevated carbon dioxide and temperature on arbuscular mycorrhizal fungal community in groundnut rhizosphere under the open top chamber facility at Institute for Agricultural Research on Climate Change, University of Agricultural Sciences, Dharwad. The results of the investigations have revealed that the higher soil water stable aggregate, organic carbon, inorganic carbon, available P, K and S were recorded with elevated CO2. However, soil pH, EC and available nitrogen did not vary significantly. The population of soil bacteria, fungi, actinomycetes, free living nitrogen fixers, fluorescent pseudomonads and P- solubilizers was significantly influenced due to elevated CO2 compared to other altered conditions. The soil enzyme activity viz., dehydrogenase, urease, cellulase, acid phosphatase, alkaline phosphatase, soil biomass carbon and nitrogen were greatly influenced by elevated CO2 condition. The Shannon diversity index was the highest with elevated CO2 plus temperature (H'=3.10), while elevated CO2 recorded (H'=2.25). The Margalef’s index of species richness for AMF was the highest in elevated CO2 plus temperature (2.66) compared to ambient condition (1.37). The most predominate AM fungal species, Glomus mosseae from all the five altered conditions were genetically characterised by amplifying a single fragment of 375 bp in the ITS region.
Subject: Agricultural Microbiology
Theme: IMPACT OF ELEVATED CARBON DIOXIDE AND / OR TEMPERATURE ON ARBUSCULAR MYCORRHIZAL FUNGAL COMMUNTIY IN GROUNDNUT RHIZOSPHERE SOIL
These Type: M.Sc
Issue Date: 2014-11
Appears in Collections:Thesis

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