Lycopersicon esculentum Mill. — is one of the most important vegetables of Azerbaijan. Heterosis propagation is used to increase the yield and quality of Lycopersicon esculentum Mill., because traditional methods cannot be used to achieve this goal. Heterosis in tomato led to an increase in productivity by 20–50%. The paper presents a study to assess heterosis in tomato inbreeds for the development of hybrid varieties. Used hybrids obtained from combinations of Tom-1 × Masally. Commodity productivity of the plant differed from the maternal form, and the paternal productivity — 2 times from the paternal form. The hybrid forms of Tom-1 × Masally in terms of fruit mass and productivity had the effect of heterosis.