An experiment was carried out during kharif 2008-09 at CRC, GBPUA&T, Pantnagar to assess the nature and genetic parameters in interspecific families of pigeonpea derived from a cross between C. scarabaeoides × C. cajan and their utilization to develop superior genotypes. The high estimates (>15%) of GCV and PCV recorded for seed yield per plant number of pods per plant, 100-seed weight, pod length, number of primary branches per plant and seeds per pod, indicated the presence of adequate genetic variation among the genotypes and suitability of these traits for further improvement by selection. The characters, like 100-seed weight, plant height, Number of pods per plant and seed yield per plant showed high heritability estimates coupled with high genetic advances indicating that these traits are under the control of additive gene action and phenotypic selection for their improvement may be effective. The estimates of correlation coefficients showed positive significant association of seed yield per plant with number of pods per plant, plant height, and 100-seed weight, primary branches per plant and pod length, while it was negatively associated with days to 50% flowering. Path analysis revealed that that number of pods per plant had highest positive direct effect on seed yield per plant followed by plant height and 100-seed weight. Number of primary branches per plant exhibited high positive indirect effect through pods per plant and plant height.