Chaudhary and Sah 1998, Chaudhary 1999). However, the resource-poor farmers are reluctant to use the
chemicals prior to occurrence of the disease. The use of chemical is also neither practical nor
environment-friendly. Utilization of host resistance has been the best way to manage the disease (Ou
1985, Bonman 1992, Bonman et al 1992). However, blast resistance, especially governed by major
genes, is often broken down under field conditions (Kiyosawa 1982, Bonman and Mackill 1988).
Therefore, identification of new sources of resistance especially partial resistance and their deployment
are necessary for blast management. In this study, 36 advanced rice breeding lines including checks
(standard, resistant and susceptible) were evaluated for qualitative and quantitative resistance to blast at
Rampur under both field condition and greenhouse inoculated condition during 2000-2001