OAK RIDGE, Tennessee, Dec. 3 -- The U.S. Department of Energy's Oak Ridge National Laboratory issued the following news release: Collaboration links large genetic database, photosynthesis expertise At the ORNL-led CBI, scientists have studied poplar for years as a fast-growing, nonfood perennial crop for feedstock production. They assembled the first genome-wide association study, or GWAS, of Populus trichocarpa by sampling from 1,500 trees in the wild and analyzing their physical characterist  more