In present investigation, 18 new genotypes were tested for upland ecology at S. G. College of Agriculture and Research Station, Jagdalpur, Chhattisgarh, to identify promising genotypes and formulate phenological relationships at phenotypic and genotypic levels and estimate G x E interactions with uncertain weather parameters. The test populations exhibited enough variation for crop breeding research, however, genotypes responded differentially to water stress and late season drought with respect to morphological and yield traits. The first Interaction Principal Component Axis (IPCA1) explained 38.95% of total variation while IPCA2 explained 20.80%. Thus, the two axes together accounted for 59.75 % of the GGE variation for grain yield. According to the biplot, genotypes PM 6004, IR 84887-B-15 and IR 83381-.B-B-137-3 were recorded vertex position. These genotypes were the best or the poorest genotypes in some or all of the environments because they were farthest from the origin of the Biplot. Among the genotypes evaluated, IR-83381-B-B-137-3 and IR-86857-46-1-1-2 was found to be promising for rainfed breeding programme as parent material.