The present experiment was conducted in line × tester mating design including wild species Solanum peruvianum to estimate heterosis over better parent for 23 yield and quality characters. F1 showing high specific combining ability (SCA) for yield, whereas high general combining ability (GCA) was observed for number of fruits per plant, fruit weight and polar diameter of fruits. Two promising hybrids H-86 × S. peruvianum and LA-3948 × Pusa Rohini were selected on the basis of their per se performance. Heterosis and SCA effects were relevant since they can be used commercially for high yield, better quality traits, low percent disease index (PDI) and tomato leaf curl disease (ToLCV) incidence. Predominance of additive gene action were evident for regulating the characters like days to 50% flowering and PDI. Both additive and non-additive gene action were important for polar fruit diameter, pericarp thickness and fruit acidity, whereas fruit weight, number of fruits per plant, number of locules per fruit, total soluble solids (TSS) and fruit yield per plant were governed by non-additive gene action.