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Asian Journal of Biological Sciences
  Year: 2012 | Volume: 5 | Issue: 6 | Page No.: 294-303
DOI: 10.3923/ajbs.2012.294.303
 
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Isolation and Characterization of Effective Plant Growth Promoting Rhizobacteria from Rice Rhizosphere of Indian Soil

Lavakush , Janardan Yadav and Jay Prakash Verma

Abstract:
The Plant Growth Promoting Rhizobacteria (PGPR) can substantially reduce the chemical inputs in agriculture. Furthermore, the use of indigenous PGPR can be an added advantage since it can easily acclimatize to the natural conditions and enhanced the plant–microbe interactions. The objective of my research is screening, characterization and selection of effective PGPR for rice production. Eight efficient PGPR isolates were selected and identified as Pseudomonas aeruginosa strain BHUJY12 (HQ-236532), Pseudomonas putida strain BHUJY14 (HQ-236533), P. aeruginosa strain BHUJY16 (HQ-236535), Pseudomonas sp. strain BHUJY19 (HQ-236519), P. aeruginosa strain BHUJY22 (HQ-236541), P. putida strain BHUJY23 (HQ-236542), P. aeruginosa strain BHUJY24 (HQ-236543) and P. aeruginosa strain BHUJY25 (HQ-236544). The bacterial strains were recorded range from 115.94 to 228.71 μg mL-1 phosphate solubilization in Pikovskaya broth medium. Also pH of the medium was ranged from 6.77 to 4.65 and SI index of different isolates ranged from 2.28 to 4.23 on solid agar plate at 6 days of incubation. Indole-3-acetic acid (IAA) production was varied range from 12.19 to 22.91 μg mL-1 at 6 days incubation. PGPR strains were also showed the growth inhibition of Rhizoctonia solani at 3 and 6 days incubation. Among all the strains, BHUJY23 strain (Pseudomonas putida) was found maximum significant phosphorus solubilization and IAA production followed by strain BHUJY16. Therefore, the P. putida strain BHUJY23 was effective PGPR for rice production under Indo-Gangetic plain of Eastern Uttar Pradesh.
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How to cite this article:

Lavakush , Janardan Yadav and Jay Prakash Verma, 2012. Isolation and Characterization of Effective Plant Growth Promoting Rhizobacteria from Rice Rhizosphere of Indian Soil. Asian Journal of Biological Sciences, 5: 294-303.

DOI: 10.3923/ajbs.2012.294.303

URL: https://scialert.net/abstract/?doi=ajbs.2012.294.303

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