Abstract
When ragi leaves (Eleusine coracana (L.) Gaertn.) were treated for 10 or 15sec at 55C in water before inoculation, Pyricularia oryzae and P. grisea exhibited the pathogenicity. The induced-susceptibility was manifested by the presence of sporulating lesions on leaves treated at the higher heat dosage and by the increased size of necrotic lesions. Phenomena associated with heat-induced susceptibility, lesion formation and sporulation on lesions, disappeared within 24 to 48hr after heat treatment.
