The study looked at 31 different types of tomatoes to see how they vary in terms of yield and quality. They found that there is a lot of genetic variation in traits like plant height, number of fruits per plant, and fruit weight. This means that these traits can be improved through selective breeding. The researchers also found that these traits are mostly influenced by genes, suggesting that they can be passed down to future generations. Overall, the study shows that there is potential to develop better tomato varieties with higher yields and better quality.