Physiology of rice sheath blight pathogen Rhizoctonia solani kuhn towards different sources of carbon, nitrogen and vitamins

Among the carbon sources, glucose supported highest weight of dried mycelium and maximum number of sclerotia formation followed by sucrose and maltose. The lactose supported least growth and also inhibitory for sclerotia formation. Out of four nitrogen sources, calcium nitrate supported highest weight of dried mycelium and maximum number of sclerotia followed by alanine. Urea exhibited inhibitory effect for sclerotia formation. In the vitamins, Thiamine supported highest weight of dried mycelium and maximum number of sclerotia followed by yeast extract. Biotin and inositol both were found to be inhibitory for growth and sclerotia formation as well.