Journal
PLANT BIOSYSTEMS
Volume 141, Issue 1, Pages 51-55Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/11263500601153529
Keywords
soybean cultivars; root rot; Pseudomonas aeruginosa; biocontrol
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A study was conducted in the greenhouse to examine the resistance of three soybean cultivars against root-infecting fungi, and to determine the role of five strains of Pseudomonas aeruginosa in protecting the roots from these fungal pathogens. In this study soybean cv RAWAL was found to be less susceptible against charcoal rot fungus Macrophomina phaseolina than cvs PARC and BRAGG. Most of the strains of P. aeruginosa used as seed dressing significantly reduced M. phaseolina and Rhizoctonia solani infection on all three cvs PARC, BRAGG and RAWAL (p < 0.05). Most of the strains of P. aeruginosa were effective on cv PARC against Fusarium solani infection, while on cv BRAGG P. aeruginosa strain Pa-3, and on cv RAWAL strain Pa-5 were effective. Both strains Pa-3 and Pa-22 gave maximum plant height and fresh weight of shoots, respectively on cvs PARC and BRAGG than other strains. These characteristics make these P. aeruginosa strains good candidates for use as biocontrol agents against soil-borne plant pathogens.
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