National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Fluorescent Pseudomonas species are the diverse group of soil microorganisms that are involved in plant growth enhancement through various direct or indirect mechanisms. The present study was conducted to investigate the phytohormone production and other plant growth promoting traits of indigenous fluorescent Pseudomonas sp. isolated from apple rhizosphere. All the eight isolates produced plant growth regulators viz., auxin, gibberellins and cytokinins in the range of 11-22 µg/ml, 25.92-43.32 µg/ml and 17-30 µg/ml respectively. The maximum production of auxin (22 µg/ml) and gibberellins (43.32 µg/ml) was showed by isolate P7 whereas M and P11 isolates showed maximum production of cytokinins (30 µg/ml). The isolate K and P17 showed maximum (46 µg/ml) inorganic phosphate solubilization and maximum siderophore production of 43.32 % SU was showed by isolate P7. All the isolates showed ammonia production and only six isolates (viz., K, L, M, P3, P7 and P17) showed HCN production. Finally, these best selected fluorescent Pseudomonas isolates could be used for plant growth promotion and development of mixed bioformulation. The augmentation of such plant growth promoting fluorescent Pseudomonas in the ecosystems will ensure a healthy micro climate around the root environment by replacing chemical fertilizers.
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