Nutritive value of ten indigenous land races of deep water rice cultivars from Assam were analysed for major nutritional components. Crude protein varied from 9.63 to 13.22%; total carbohydrate from 69.68 to 85.43%; lipid from 2.33 to 3.80%; crude fibre from 0.45 to 0.90%, while ash content varied from 1.13 to 2.00%. Calorific value varied from 345.41 to 405.78 Kcal. 100 gm^-1. SDS-PAGE analysis of seed protein revealed considerable polymorphism with a total 22 bands ranging in size from 97.40 to <13.2 Kd. Two land races, viz. Negheri and Bawla had the lowest number of 9 protein bands each but with different profiles. Highest number of 15 bands were observed in the land race Do-Kokua. Three proteins with molecular weight 26.7, 17.0 and 15.7 Kd were common to all the land races. Dendrogram analysis revealed that the land race Bawla is markedly different from the rest.