I teach courses in general biology, economic botany, dendrology and mycology. My current research is focused on the restoration of the American chestnut (Castanea dentata) to the Southern Appalachian hardwood forest. I am also working on establishment of a commercial chestnut industry in Tennessee. Project areas include: breeding for blight resistance (resistance to Cryphonectria parasitica), breeding for Phytophthora-root-rot resistance (caused by Phytophthora cinnamomi), investigations of hypovirulence for biological control of chestnut blight, Castanea germplasm collection and characterization, and chestnut cultivar evaluation.
I am seeking undergraduate and graduate students interested in research on chestnut ecology, chestnut breeding, and/or chestnuts as a nut crop. For more information contact me at email@example.com
Chestnut research at UTC is supported in part by The Summerfield Johnston Endowment for the Restoration of the American Chestnut, and by the Robert M. Davenport Professorship of Biology at the University of Tennessee at Chattanooga, and by grants from the Bettie J. Smith Family Limited Partnership, The American Chestnut Foundation, and Dollywood.
* denotes graduate student ** denotes undergraduate student
Sisco, P.H., Neel, T.C., Hebard, F.V., Craddock, J.H. and Shaw, J. (2014) Cytoplasmic male sterility in interspecific hybrids between American and Asian Castanea species is correlated with the American D chloroplast haplotype. Acta Hort. 1019:215-222.
Craddock, J.H. 2014. A tree crop archetype. Acta Hort. (ISHS) 1019:45-47
Shaw, J., Craddock, J.H., and Binkley, M.* (2012) Phylogeny and phylogeography of North American Castanea Mill. (Fagaceae) using cpDNA suggests gene sharing in the Southern Appalachians (Castanea Mill., Fagaceae) Castanea 77:186-211.
Perkins, M.T.** and Craddock, J.H. (2012) The Effect of Phosphite on Mycorrhiza Formation in Chinese-American Hybrid Chestnuts (abstract). Page 33 in: Proc. 2012 American Chestnut Summit, USDA Forest Service and The American Chestnut Foundation, Oct. 19-21, 2012, Asheville, NC.
Harris, A.*, Shaw, J., and Craddock, J.H. (2012) A Floral Survey and Census of American Chestnut at Bendabout Farm, Bradley County,Tennessee (abstract). Page 21 in: Proc. 2012 American Chestnut Summit, USDA Forest Service and The American Chestnut Foundation, Oct. 19-21, 2012, Asheville, NC.
Craddock, J.H. (2009) USA. Pages 168-174 in: Avanzato, D. (ed.) Following Chestnut Footprints (Castanea spp.) - Cultivation and Culture, Folklore and History, Tradition and Uses :: Sulle Orme del Castagno - Coltura e Cultura, Folclore e Storia, Tradizioni e Usi. Scripta Horticulturae (ISHS) Number 9. 175 pp. ISBN 978-90-6605-632-9.
Craddock, J.H. (2007) Chestnut Relatives. In: Bolgiano, C. (ed.) Mighty Giants: An American Chestnut Anthology. Images from the Past and The American Chestnut Foundation. 296 pp. ISBN 978-1884592485.
Craddock, J.H. (2006) Chestnut Breeding in the United States. Pages 109-128 in: Tree Breeding Researches: for the next half century. Proc. International Symposium for the 50th Anniversary of KFGR & the 20th Anniversary of the late Dr. SK Hyun. June 15-16, 2006, Forest Seed Research Center, Suanbo, Korea. KFRI.
Craddock, J.H. (2002) Il Castagno negli Stati Uniti. Pages 278-283 In: Bounous, G. (ed.) Il castagno in Italia e nel Mondo: Coltura del passato per il futuro. Edagricole-Calderini, Bologna.