Bacterial blight (BB) is a major disease of rice for which host resistance is the only effective solution. Pyramiding entails stacking multiple genes leading to the simultaneous expression of more than one gene in a variety to develop durable resistance Expression. Gene pyramiding is gaining considerable importance as it would improve the efficiency of plant breeding leading to the development of genetic stocks and precise development of broad spectrum resistance capabilities. | Phenotyping of F2 segregating population derived from mahamaya X IRBB65 against bacterial blight pathogen Xanthomonas oryzae pv. oryzae