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In India, Bacterial Leaf Blight (BLB) caused by Xanthomonas oryzae pv. oryzae (Xoo) is found to be prevalent in all rice growing regions and one of the major factors in reduction of rice production. Since the introduction and cultivation of new, high-yielding but susceptible rice varieties over a large acreage in recent years, the disease has become one of the most serious problems of rice cultivation in India. For the management of rice BLB, various control measures are being used but efficient and reliable control measure for it is unavailable so far. Resistant varieties are not so popular...