University of Tennessee at Chattanooga
Accelerated, graft-based germplasm conservation of American chestnut (Castanea dentata) in the South
Abstract
dc:description.abstractAsexual propagation through grafting is a low-tech, noninvasive method for conservation of rare American chestnut germplasm. Particularly when in situ conditions prevent trees from reaching sexual maturity, graft-propagation allows release from shade conditions and disease pressure to promote flowering. Collection of pollen from containerized grafted trees allows conservation of genetic resources that were previously unavailable to breeders or difficult to access. Additionally, the use of high light environments may be able to reduce the generation time needed to develop a population of disease-resistant trees for restoration. As many new American chestnut individuals are required to advance both the current American Chestnut Foundation (TACF) backcross breeding program and the potential transgenic outcross program, the use of these methods provides an important proof of concept: accelerated conservation of novel genotypes from under-sampled southern populations is possible though graft propagation and the use of high light conditions.
Degree
thesis:*- Grantor dc:publisher
- University of Tennessee at Chattanooga
- Year dc:date.available
- 2021
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Deason, Trent
- Contributors dc:contributor
-
- Craddock, J. Hill
- Boyd, Jennifer; Barbosa, Jose
- College of Arts and Sciences
Subjects
dc:subject × 4Rights
dc:rights- Language dc:language
- English, eng
Identifiers
dc:identifier.*- Repository record dc:identifier
- https://scholar.utc.edu/theses/650
- OAI identifier oai:identifier
- oai:scholar.utc.edu:theses-1807