Cowpea lines (IMAGE) University of California - Riverside Caption This image shows how the black eyed pea plant lines used in the study are related to each other, and it also shows how different the wild seeds are from the early land races. Credit Joel Sachs/UCR Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.