Physiological Comparison of Pure American and American-Chinese Chestnut Hybrids
American chestnut (Castanea dentata), once a dominant canopy species in eastern North America, succumbed to invasive pathogens in the early 20th century. The American Chestnut Foundation attempts to breed pathogen resistance using backcrossed hybrids with Chinese chestnut (Castanea mollissima ). We compared steady-state photosynthetic characteristics among backcrossed chestnut hybrids (BC1F1 with 3/4 American genotype and […]
Investigating Shade Tolerance and Phenotypic Plasticity of Virginia Spiraea (Spiraea virginiana Britton), a Federally Threatened Shrub
Virginia spiraea (Spiraea virginiana Britton, Rosaceae) is a putative shade-intolerant, disturbance-adapted, riparian shrub species native to the southern Appalachian Mountains. This species was listed as threatened in 1990, and a federal recovery plan was developed in 1992. Current reassessment of the recovery plan includes proposals for propagation and out-planting to supplement and restore wild populations. […]