M.P.N. SINGH, J. AHMED'', LATIK A SHARAN. AND M.P. SINHA
Abstract
The growth, sporulation, folin.positive and protein produdion by blight pathogens i.e. Allmana soloni (VIRULENT PATHOGEN) and Montano Iritioim (AVIRULENT PATHOGEN) on modified Richard's liquid culture medium with tomato fruit extract of Pusa Ruby (RESISTANT VARIETY) and Prince Long (SUSCEPTIBLE VARIETY) were studied with different concentration (110 and 1.0%) of glucose. The maximum stimulation of growth, sporulation, folin-positive and protein production was recorded with the fruit extract of Pura Ruby followed with Prince long variety by the pathogen A. solani and inhibition was recorded in the cane of A. &Menlo under similar conditions. The stimulation and inhibition depend not only upon the carbon source but also on the host-pathogen relation.