The study looked at different types of tomatoes to see how much they varied in yield and quality. They found that certain traits like number of fruits per cluster and fruit yield were highly influenced by genetics. This means that these traits can be improved by choosing the right tomatoes to grow. The researchers used a specific design to test the tomatoes and found that some traits were more consistent across different types of tomatoes. This information can help farmers choose the best tomatoes to grow for a higher yield and better quality.