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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 6
First page : (728) Last page : (735)
Article doi: : http://dx.doi.org/10.18782/2320-7051.6943

Biocontrol Activity and PGPR Ability of Different Isolates of Pseudomonas and Bacillus on Tomato

A. Ramakrishna¹*, S. Desai ², G. Uma Devi¹ and T. Uma Maheswari³

¹Department of Plant Pathology, PJTSAU, Rajendranagar, Hyderabad – 500030, India
²Division of Crop Science, ICAR-CRIDA, Santhoshnagar, Hyderabad-500059, India
³Department of Entomology, PJTSAU, Rajendranagar, Hyderabad – 500030, India
*Corresponding Author E-mail: ramakrishnaasu@gmail.com
Received: 11.10.2018 | Revised: 24.11.2018 | Accepted: 30.11.2018

 ABSTRACT

The present study was to determine the efficacy of bacterial  biocontrol agents against Alternaria solani. Among 20-each isolates of Pseudomonas, Bacillus spp. tested for their biocontrol ability against A. solani,  Pseudomonas (P28) showed maximum inhibition (74.19%) of the pathogen and Bacillus (B299) showed maximum inhibition (61.94%) of the pathogen. Same set of Pseudomonas and Bacillus isolates were evaluated for their plant growth promoting ability on tomato. There was 100 percent germination in all the treatments of Pseudomonas and Bacillus showing that all the isolates did not possess any deleterious effect towards seed germination. Among Pseudomonas treatments, isolate P43 recorded highest seedling vigour index (1502) followed by isolate P17 (1493). Among Bacillus treatments, isolate B100 recorded highest seedling vigour index (1636) followed by isolate B26 (1586), the lowest being by isolate B27 (996), which was less than control.

Key words: Biocontrol, PGPR, tomato, Pseudomonas and Bacillus.

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Ramakrishna, A., Desai, S., Uma Devi, G. and Uma Maheswari, T., Biocontrol Activity and PGPR Ability of Different Isolates of Pseudomonas and Bacillus on Tomato, Int. J. Pure App. Biosci.6(6): 728-735 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6943