Nutritive value and characterization of Joha rice cultivars of Assam through seed protein electrophoresis

Chemical analysis for nutritive value of 14 Joha rice cultivars revealed that crude protein content varied from 7.03 to 8.45%; total carbohydrate from 65.75 to 80.88% while lipid content varied from 2.03 to 2.88% with the exception of Naga Joha that had 3.73% lipid content. However, crude fibre and ash content showed limited variability, the ranges being 0.25 to 0.75% and 1.0 to 1.66% respectively. Calorific value varied from 315.31 to 381.36 Kcal/100 gm. SDS-PAGE analysis revealed a total 16 seed protein ranging in size from 97.4 to <14.0 Kd. The lowest number of 5 protein bands were observed in Keteki Joha while highest number of 13 protein bands were observed in Biri Joha. Proteins with molecular weight 25.0, 22.6 and 15.7 Kd appear to be protein molecular marker since they were found in all the cultivars. Dendrogram analysis revealed five cluster and Keteki Joha
has been found to be odd type distantly related to others.