Rice belongs to the genus Oryza and has two cultivated and 22 wild species. The cultivated species are Oryza sativa and Oryzaglaberrima. Oryza sativa is grown all over the world. Rice is known to suffer from number of diseases caused by fungal, bacterial and viral origins. Identification of resistant genotypes is again an essential continuous process either to recommend for cultivation in endemic area or to use as donors of the resistant genes. In view of these, the present investigation of evaluation of 102 rice varieties/genotypes against blast and brown spot diseases were carried out during Kharif 2014 to identify the sources of resistance under field conditions. 102 entries were tested in Uniform blast screening nursery for leaf blast and transplanted field of screening for neck blast and brown spot diseases resistance of paddy, out of which none of varieties /genotypes found highly resistant to resistant reaction of leaf blast disease of paddy and 7 entries i.e. T(N)1, IR-64, IET- 24212, 24214, Vivekdhan 62(NC), 23534, Rasishowed moderately resistant reactions to the leaf blast disease and remaining entries were found moderately susceptible to highly susceptible reaction to leaf blast disease. The same varieties/genotypes were also screened for neck blast disease out of which none of varieties /genotypes found highly resistant reaction of neck blast disease of paddy and 13 entries i.e., IET-24205, 24188, 24227, 24231, 23542, 23543, 23541, 22979, 22957, 23528, Benibhog, RP-Bio-226, CO-39 were found resistant reaction to neck blast disease and remaining entries were found moderately resistant to susceptible reaction to neck blast disease. Similarly, the same varieties / genotypes were also screened for brown spot disease out of which none of the entries found highly resistance and 2 entries i.e., IET-24216, IR-50 were found resistant reaction to brown spot disease. The remaining entries were found moderately resistant to highly susceptible reaction to brown spot disease.
