The study looked at different types of cowpea plants to see how their traits are passed down through generations. They found that traits like seed size and number of seeds per pod are mostly determined by genetics and can be easily improved through selective breeding. However, the time it takes for the plants to mature is less influenced by genetics and harder to change through breeding. So, if you want to grow cowpeas with bigger seeds or more seeds per pod, you can focus on selecting plants with those traits.