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Title: Detection of Azospirillum and PSB in Rice Rhizosphere Soil by Protein and Antibiotic Resistance Profile and Their Effect on Grain Yield of Rice
Authors: Khan, M R
Talukdar, N C
Thakuria, D
Keywords: Azospirillum;PSB;Protein profile;Antibiotic resistance profile
Issue Date: Apr-2003
Publisher: NISCAIR-CSIR, India
Abstract: Two biofertilizer agents, Azospirillum amazonense A10 and Bacillus megaterium P7, alone and in combination increased the grain yield of rice in autoclaved soil by 103-256% over control. Colonies of A, amazonense and B. megaterium were distinguished from the contaminant phosphate solubilizing bacteria (PSB) and Azospirilla colonies in the respective media based on colony morphology, colour and thickness of clearing zone, Population densities of A, amazonense and B. megaterium were found to be 2.6 x 108 and 2.9 x 108 CFUg .] soil, respectively at 48 day post transplanting. Protein and antibiotic resistance profiles of the inoculated and reisolated A. amazonense, B. megaterium and the contaminant colonies with the pure cultures indicated that the isolates were able to establish in the rice rhizosphere with the resultant enhancement of plant growth and yield.
Page(s): 246-250
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Appears in Collections:IJBT Vol.02(2) [April 2003]

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