An investigation was undertaken to study the impact of F2 inter se mating on quantitative traits mean, range, variance, heritability, genetic advance as per cent of mean, trait inter-relationship between BIP F3 progenies with F3 progenies in maize at the experimental plots of the Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru during summer 2013. The material for the study consisted of two F2 populations derived from crossing the parents HKI-26-2-4-(1-2) and CML 358 (C-I), contrasting for Anthesis-Silking Interval (ASI) and crossing the parents CML 41 and CM 500 (C-II), contrasting for grain yield. Eight F2 individuals from each cross were intermated to develop biparental (BIP) progenies following NCD-1 mating design and were also selfed to generate F3 progenies. The BIP F3 progenies, F3 progenies along with their parents were evaluated following RCBD with two replications during 2013 kharif season. ANOVA indicated significant variability in both BIP F3 and F3 progenies. The results further, revealed higher mean and range coupled with high heritability and genetic advance as per cent of mean in F3 progenies for ASI and in BIP F3 progenies for grain yield in both the crosses. The estimates of GCV and PCV were higher for ASI in BIP F3 progenies of C-I and for grain yield in C-II. While, F3 progenies had higher estimates of GCV and PCV for ASI in C-II and for grain yield in C-I. Further, minor shifts in the association and the direct effects of grain yield with its component traits were noticed at both genotypic and phenotypic level in both the crosses.