The study looked at 87 different types of rice plants to see how they respond to high temperatures in the summer. They found that there is a lot of variation in the traits of these plants, with some showing more potential for high yields than others. Traits like the number of filled grains per panicle and the time it takes for the plant to flower were found to be important for predicting grain yield. By selecting plants with these specific traits, researchers believe they can improve the overall yield of rice plants.