Phenotypic correlation co-efficients and path co-efficients were computed among 11 characters for four sorghum genotypes (M-35-1, 9-13, GRS-1 and A-1) in three densities (1.8, 2.0 and 2.2) grown in late rabi season of 1995-96. The correlation based on data averaged over five stages of growth after anthesis displayed significantly high positive correlation of grain yield per plant with photosynthetic rate (0.793), transpiration rate (0.583), net assimilation rate (0.777), crop growth rate (0.668), relative growth rate (0.891), total drymatter at harvest (0.888) and harvest index (0.945) while, negative association with diffusive resistance (-0.794), leaf area index (0.554) and leaf area duration (-0.457). Path analysis revealed higher positive direct effect of harvest index (0.782) and total dry matter (TDM) at harvest (0.368) and negative direct effect of photosynthetic rate (0.112) and transpiration rate (0.001).