Field Mustard (IMAGE) Dartmouth College Caption Dartmouth researchers and their colleagues have identified a circadian clock gene that helps a key crop plant, Brassica rapa, to withstand extreme cold and salty conditions, which could help to develop hardier crops with improved yield. Credit Wikipedia Creative Commons: <a href="http://commons.wikimedia.org/wiki/File:Another_Mustard_Field.jpg" target="_blank">http://commons.wikimedia.org/wiki/File:Another_Mustard_Field.jpg</a> Usage Restrictions See <a href="http://commons.wikimedia.org/wiki/File:Another_Mustard_Field.jpg" target="_blank">http://commons.wikimedia.org/wiki/File:Another_Mustard_Field.jpg</a> License Licensed 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.