ALTERNATIVE SOURCE OF RESISTANCE FOR BACTERIAL LEAF BLIGHT DISEASE OF RICE

Abstract

Bacterial leaf Blight (BlB) of rice caused by Xanthomonas campestris pv.
oryzae (lshiyaa) Dye has been occurring in different levels of severity depending
upon the degree of susceptibility of rice cultivar grown in different parts of
the country. Varieties selected for disease resistance have often become susceptible
due to pathogen adaptability. Resistance in cultivated rices has remained
only for a shorter durations. Among the wild rice, Oryza barthii was earlier
reported to be immune to the disease (Devadath, 1983). An attempt has been
made in the present study to test number of accessions of different wild
species of Oryza and to identify additional sources of resistance.