Volume : V, Issue : V, May - 2015

Diversity of plant growth promotory rhizobacteria from maize rhizosphere

Seema Rawat

Abstract :

 The rhizosphere is the narrow region of soil that is directly influenced by root secretions and associated  soil microorganisms. It harbours a wide range of bacteria influenced by the root exudates. These bacteria  can be beneficial or deleterious. The present work was focused on characterization of plant growth promotory rhizobacteria from maize rhizosphere of three fields. The maize rhizobacterial population (log10cfu) varied significantly in all  the three fields from 5.4 to 9.5. In field A, Alcaligenes was documented to be dominant population of zero day (40%).  Klebsiella was the dominnat rhizobacteria on 30th day (40%) while Pseudomonas and Alcaligenes were equally domibacteria from maize rhizosphere of three fields. The maize rhizobacterial population (log10cfu) varied significantly in all  the three fields from 5.4 to 9.5. In field A, Alcaligenes was documented to be dominant population of zero day (40%).  Klebsiella was the dominnat rhizobacteria on 30th day (40%) while Pseudomonas and Alcaligenes were equally domigenes was the dominant isolate on zero day (40%) while Alcaligenes and Klebsiella were dominant on 30th day (30%).  Pseudomonas was dominant on 60th day (40%) and on 90th day (55%) and on 120th day (55%). In field C, Corynebacterium was dominant isolate (40%) on zero day while Alcaligenes was dominant on 30th day (40%), Klebsiella on 60th  day (40%), Pseudomonas on 90th day (65%) and on 120th day (40%). The recovered population showed good growth  promotion attributes viz., phosphorus solubilization, rhamnolipid, siderophore and protease production. Corynebacterium, Klebsiella and Pseudomonas were found to promote length of shoot in sterile as well as non–sterile soil after  30days and 45 days of sowing

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Seema Rawat Diversity of plant growth promotory rhizobacteria from maize rhizosphere Indian Journal of Applied Research, Vol.5, Issue : 5 May 2015

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