Researchers studied how different rice plants perform under water stress conditions by analyzing their genetic traits. They used a special breeding method to see how traits like yield, root characteristics, and plant height are inherited. They found that some rice genotypes were better at producing roots and tolerating water stress, while others were not as good. The study showed that both additive and non-additive genes play a role in these traits, but additive genes were more important overall. This means that certain rice plants have a genetic advantage for specific traits, making them better suited for growing in challenging conditions.