Parent progeny regression analysis involving F4 and F5 generation of two crosses in rice was undertaken to estimate the genetic potential transferred from one generation to other for single plant yield. The F4 material of two cross combinations IR 72 x Veeradangan and ADT 39 x Kavuni raised along with parents in a Randomized block design with two replications and the F5 generations were selected based on single plant yield and grain colour. Five representative plants for each genotype in each replication were randomly selected to record observations on eight quantitative characters. Positive and significant correlation and regression was observed only for the trait days to 50 per cent flowering (r = 0.515, b= 0.553) and regression for flag leaf length (b = 0.497) and panicle length (b = 0.368). In this way showed how far the genetic potentials transferred from one generation to the other and a high regression suggests a large genetic effect coupled with small environmental influences. From the above discussion, it can be concluded that the characters viz., days to fifty per cent flowering, flag leaf length and panicle length were found to be the yield determinants.