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Characterization and Bio-Antagonistic Activity of Rhizobacteria against Fusarium Oxysporum F. Sp. Cepae

Characterization and Bio-Antagonistic Activity of Rhizobacteria against Fusarium Oxysporum F. Sp. Cepae

Javed Asghar Tariq1*, Bashir Ahmed2, Manzoor Ali Abro2, Muhammad Ismail1, Muhammad Usman Asif1 and Raza Muhammad1 

1Nuclear Institute of Agriculture Tando Jam, Pakistan; 2Deptartment of Plant Pathology, Sindh Agriculture University, Tando Jam, Pakistan.

jatariq_1411@yahoo.com 

ABSTRACT

Rhizobacteria have ability to enhance plant growth as well as to have antagonistic effect against another pathogenic microflora. Current studies were designed with the aim to search out such type of antagonistic bacteria from rice crop. For this purpose, soil was collected from rice growing areas of Tando Jam. The isolation from rhizospheric soil was done by dilution plate technique. Among isolated isolates, 6 representative colonies were purified, multiplied and characterized using light microscopy and other biochemical tests. The bacteria were tentatively identified as Pseudomonas, Streptomyces, Bacillus and Micrococus. These bacteria were checked for their antagonistic activity against Fusarium oxysporum f.sp. alium cepa. They all were found to inhibit fungus showing inhibition zone 4.09 -74.97%. Hence, on the basis of these studies, it can be concluded that these bacteria can be used as a biocontrol agent to manage other fungal diseases of agricultural crops also. 

 

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Pakistan Journal of Agricultural Research

December

Vol. 32, Iss. 4, Pages 562-709

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