The researchers studied different types of lentil plants to see how certain traits are related to seed yield. They looked at local plants and ones brought from other places. They found that in both types of plants, more pods per plant and more branches led to higher seed yield. However, the weight of the seeds only mattered for the plants from other places, not the local ones. In the exotic plants, heavier seeds meant more yield. The number of branches didn't directly affect seed yield, but it did indirectly through the number of pods. Overall, the study showed that different traits play a role in determining how many lentils a plant produces.