Tomato (Solanum lycopersicum Linn) is one of the most consumed vegetables in the world and is a dietary source of vitamin, minerals, and fiber, which are important for human nutrition and health. It is extensively grown throughout the world. Sodium Azide is a chemical mutagen that has become an important tool to enhance agronomic traits of crop plants. It is being used to produce resistance in various susceptible crops to improve their yield and quality traits against harmful pathogens. Generally SA is very effective in increasing mutations with respect to germination percentage, root length, seedling height per plants, the most effective concentration being . | Studies on the effect of sodium azide on the germination percentage and yield product in tomato variety Solanum lycopersicum Linn Pusa Sadabahar