Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S-901 83 Umeå, Sweden
E-mail: Torgny.Nasholm@genfys.slu.se
Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, S-901 83 Umeå, Sweden
E-mail: Torgny.Nasholm@genfys.slu.se