Isolation of rhizospheric bacteria and their effect on germination of tobacco seed and growth of seedlings

Rhizosphere bacteria were isolated from root zones of tobacco (Nicotiana tabacum L.) plants. They were cultured in laboratory and investigated for their effects on germination and growth of tobacco seedlings. Isolates thrive on root exudates in the rhizosphere and benefit the plants by altering the solubility and availability of mineral nutrients and protecting the roots from invasion of pathogens by creating an antibiotic barrier around the root. Present study revealed that rhizospheric bacteria do not effect the germination of tobacco seeds. Tobacco rhizospheric bacteria were found to produce better growth of tobacco seedlings in pot cultures.