Genetic variability in six derivatives of Napier Bajra hybrid was studied for forage yield and its component characters viz., plant height, number of tillers per plant, number of leaves per tiller, leaf length and green forage yield. Green fodder yield is between 42.9 to 53.3 kg/plot and check variety PBN233 gave yield43.7 kgs. Entry no.2 and Entry no. 1 gave highest green fodder. The number of tillers, yield per plot and leaf breadth estimates in the germplasm studied for genotypic coefficient of variation (GCV) and phenotypic coefficient of variation (PCV) was high. The estimates of heritability in broad sense and genetic advance as percentage of mean were high for characters viz., number of tillers (67.80 and 17.05), leaf breadth (59.70 and 9.05) and number of leaves (56.17and 0.14 ). Positive correlation was shown leaf breadth (0.6631 and 0.3410) and plant height (0.1435 and 0.2427) through yield of green fodder. Leaf breadth and plant height were yield contributing factors. The study shows that genotypes could be exploited for direct selection and improvement of derivatives of grass hybrids.