The study looked at 31 types of rice to find out which traits are linked to high grain yield. They found that traits like plant height, number of tillers, and panicle length are important for high yield. These traits are mostly determined by genetics and can be improved through selective breeding. The researchers also discovered that traits like harvest index and number of grains per panicle have a strong positive impact on grain yield. By focusing on these key traits, farmers can identify and grow rice strains that produce more grain.