Agave gene delays poplar dormancy (IMAGE) DOE/Oak Ridge National Laboratory Caption Two hybrid poplar trees, right, were engineered with the REVEILLE1 gene to delay dormancy compared with standard poplar trees, left. Credit Degao Liu/ORNL, U.S. Dept. of Energy Usage Restrictions n/a 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.