Researchers studied 55 types of mung beans to see what factors affect seed yield. They found that the length of the pod, days to flower, and plant height have a big impact on seed yield. The weight of 100 seeds is also important, but in a different way. The length of the pod, days to flower, and plant height directly affect seed yield, while plant height and days to flower indirectly affect it through the length of the pod and seed weight. This means that when choosing mung bean varieties for high seed yield, it's important to focus on the length of the pod, days to flower, and plant height.