Screening of rice (Oryza sativa L.) germplasm against Xanthomonas oryzae pv. oryzae (Xoo) in green house condition

Bacterial leaf blight (BLB) is one of the apex devastating diseases of the rice crop around the world. It continuously reduced the yield and quality of rice. . Host plant resistance is an important component of IPM for this disease. It is easy to use, viable, durable, effective, and long term method as compared to any other control measure. In this investigation effort has been made to screen the rice germplasm against Xoo pathogen under greenhouse condition. For this purpose most aggressive strain PKXOO4 was used. The fresh culture of most aggressive strain was prepared approximately 10 9 CFU/ml and inoculated the rice germplasm by clip method. Among 28 Pakistani germplasm screened, none was found immune, resistant or moderate resistant against Xoo. However six genotypes RICC 101, RICC 115,