Sorghum Field (IMAGE) Penn State Caption Dinakaran Elango, recent plant science student, with biomass sorghum lines growing in a research plot at Penn State's Russell E. Larson Agricultural Research Center, Rock Springs, Pa. Researchers characterized anthracnose resistance in sorghum but also characterized stress tolerance by studying wax content in the plants. Credit Surinder Chopra/Penn State Usage Restrictions non commercial use only 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.