Abstract

PLANT GROWTH PROMOTING (PGP) ACTIVITY OF ACTINOMYCETES ISOLATED FROM THE RHIZOSPHERE OF CAPSICUM ANNUUM L.

Ashokvardhan. T*, Rajithasri. A. B, Poorna chander rao. M and Satya prasad. K

Abstract

A total 72 actinomycetes strains were isolated from 17 rhizosphere soils of Capsicum annuum L. of Warangal, Khammam, Karimnagar and Mahabubnagar, Telangana, India. Actinomycetes were isolated on chitin medium by serial dilution plate method. Among the 72 actinomycetes, 25 were screened for Plant Growth Promoting traits (PGP) viz., indole acetic acid production, ammonia production, phosphate solubilization and hydrogen cyanide production. These 25 strains showed IAA and ammonia production, 11 strains showed phosphate solubilization and no strain showed HCN production. Only 4 strains (OUA8, OUA17, OUA18 and OUA27) were tested and showed siderophore production and biochemical activity.

Keywords: actinomycetes, Capsicum annuum, PGP activities, biochemical activity.