| Institution: | (1) Finnish Forest Research Institute, Punkaharju Research Unit, Finlandiantie 18, 58450 Punkaharju, Finland;(2) Department of Biology, University of Oulu, PO Box 3000, 90014 Oulu, Finland;(3) Biotechnology Research Center, School of Forest Resources and Environmental Science, Michigan Technological University, 1400 Townsend Drive, Houghton, MI, 49931-1295, USA;(4) Department of Forestry, College of Natural Resources, North Carolina State University, 2500 Partners II Bldg, Campus Box 7247, Raleigh, NC 27695-7247, USA |
