Keeping in view the present research programme entitled “Studies on genetic parameters in relation to tomato leaf curl virus (TLCV) incidence in tomato (Solanum lycopersicum L.)” have been framed with the following objectives- 1. To estimate the extent of variability present in the parents and their progenies. 2. To estimate the components of variance for all the characters under study. 3. To estimate the general and specific combining ability variances and effects. 4. To determine the heterosis and inbreeding depression in F2 generation. 5. To determine the heritability and genetic gain for all the characters under study. 6. To estimate the genotypic and phenotypic correlation coefficients and path coefficient among the characters under study. 7. To determine the qualitative parameters in the parents and their best hybrids.