Optimization of <Emphasis Type="Italic">Agrobacterium</Emphasis>-mediated genetic transformation of <Emphasis Type="Italic">Fraxinus nigra</Emphasis> and development of black ash for possible emerald ash borer resistance
1.Department of Forestry and Natural Resources, Hardwood Tree Improvement and Regeneration Center (HTIRC),Purdue University,West Lafayette,USA;2.USDA Forest Service, Northern Research Station,HTIRC,West Lafayette,USA