Affiliation: | (1) Hardwood Tree Improvement and Regeneration Center, Department of Forestry and Natural Resources, Purdue University, 1159 Forestry Bldg, West Lafayette, 47907, USA;(2) Hardwood Tree Improvement and Regeneration Center, USDA Forest Service, Purdue University, 1159 Forestry Bldg, West Lafayette, 47907, USA |