Toxic Effect of the Culture Filtrate of <I>Cercospora wrighitia</I> Thirum. And Chupp, the Causal Agent of Leaf Spot Disease of <I>Wrighitia tinctoria</I> Br

Abstract

Toxic effect of the culture filtrate of Cercospora wrighitia Thirum and Chupp, the causal agent of leaf spot disease of Wrighitia tinctoria Br. was studied In the laboratory. To assess tbe toxin production, healthy young branches of brinjal, tomato and host (W. tinctoria) were used. The production of toxin was tested in Richard's medium and Potato dextrose broth. Various types of symptoms were noticed on test plants. The toxin production was comparatively more in Richard's medium than in PDB.