Influence of Carbon and Nitrogen Sources on Growth of Sclerotium rolfsii Sacc. Causing Stem Rot of Tuberose (Pollanthes tuberosa L.)

摘要

Among different diseases affecting tuberose plant stem rot induced by Sclerotium rolfsii Sacc. is important soil borne disease causing devastating losses. In vitro studies were conducted on the effect of carbon and nitrogen sources on the myce-lia growth and biomass production of S. rolfsii. The results reveal that among the carbon sources tested, sucrose (602.57 mg) recorded the maximum myce-lia growth and dry weight of S. rolfsii and least was obtained on lactose (121.19 mg). Among the nitrogen sources potassium nitrate (453.17 mg) supported the maximum mycelia growth and dry weight of the fungus where as threonine (121.01 mg) found to be least effective.