A study on cowpea genotypes found that certain traits like peduncle length, number of branches, and seed weight have a positive impact on seed yield. Some genotypes like IC 259106 and EC 58905 were identified as superior for seed yield per plant. The researchers analyzed the genetic variability, correlation between traits, and the effects of different traits on yield. They used statistical methods to determine the relationships between various characteristics and seed yield. The study showed that specific traits play a significant role in determining the overall yield of cowpea plants.