Author(s):

Biyyani Suman, S Triveni, PC Latha, M Srilatha and CHV Durga Rani

Abstract: Salinity is one of the most serious factors limiting the productivity of agricultural crops, with adverse effects on germination, plant vigour, crop yield and many soils throughout the world are P deficient, keeping both these points in view we isolated sixteen phosphorous solubilizing bacteria (PSB) from saline soils of Telangana, which tolerated 15% NaCl. The isolates were also characterized for morphological, cultural and biochemical characteristics. Of all the 16 strains isolated, 5 were tentatively identified as Bacillus sp., 8 as Pseudomonas sp., 2 as Azotobacter sp. and 1 as Rhizobium sp. according to the Bergey’s manual of systemic bacteriology. The isolates were further screened for plant growth promoting (PGP) attributes like siderophore, HCN, IAA production and also for ACC deaminase activity, EPS production. Siderophore was produced by 37.5% isolates, HCN was produced by 75% isolates and IAA was produced by 50% isolates respectively. Only four isolates used ACC as a sole nitrogen source and EPS was produced by only 13 isolates.

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