Wheat Length (IMAGE) University of California - Davis Caption Photo of roots that contain different dosages of a family of genes that affects root architecture, allowing wheat plants to grow longer roots and take in more water. Credit Gilad Gabay / UC Davis Usage Restrictions Please credit. 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.