International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 6, Issue:10, October, 2017

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(10): 229-245

Effect of Actinobacteria and Pseudomonas spp. against Sclerotium rolfsii in Groundnut
K.P. Roopa1* and P.U. Krishnaraj2
1Department of Biotechnology, University of Agricultural Sciences, Dharwad, Karnataka, India
2Department of Agricultural Microbiology, College of Agriculture, Vijayapura, Karnataka, India
*Corresponding author

Groundnut or peanut (Arachis hypogaea L.) is one of the important economic oilseed crops of the world. Among various soil borne pathogens, Sclerotium rolfsii causing southern blight is of most important, causing huge losses in groundnut. The Sclerotium rolfsii culture was obtained from Department of Biotechnology, University of Agricultural Sciences, Dharwad. The identification and confirmation of the isolate was done by cultural characteristics, pathogenicity test. In in vitro studies plant growth promoting rhizobacteria viz., actinobacteria and pseudomonas spp. were used. Initially, 257 actinobacteria and 134 Pseudomonas isolates were screened against S. rolfsii. Out of these isolates, nine isolates showed significant inhibition of pathogen and these isolates were further selected for in vivo evaluation under greenhouse conditions S. rolfsii. Percent disease incidence and percent disease control were recorded. Under challenge inoculation with S. rolfsii, the Pseudomonas isolate, AUDP 48 showed significant control of the southern blight disease compared to other rhizobacteria. Growth parameters such as shoot length, root length and total fresh and dry weight are also observed far superior in this treatment.

Keywords: Grundnut, Dharwad, Actinobacteria.

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How to cite this article:

Roopa, K.P. and Krishnaraj, P.U. 2017. Effect of Actinobacteria and Pseudomonas spp. against Sclerotium rolfsii in GroundnutInt.J.Curr.Microbiol.App.Sci. 6(10): 229-245. doi:
Copyright: This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike license.