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Resistance to Phytophthora cinnamomi among seedlings from backcross families of hybrid american chestnut
Author(s): Steven N. Jeffers; Inga M. Meadows; Joseph B. James; Paul H. Sisco
Date: 2012
Source: In: Sniezko, Richard A.; Yanchuk, Alvin D.; Kliejunas, John T.; Palmieri, Katharine M.; Alexander, Janice M.; Frankel, Susan J., tech. coords. Proceedings of the fourth international workshop on the genetics of host-parasite interactions in forestry: Disease and insect resistance in forest trees. Gen. Tech. Rep. PSW-GTR-240. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. pp. 194-195
Publication Series: General Technical Report (GTR)
Station: Pacific Southwest Research Station
PDF: View PDF (185.52 KB)Note: This article is part of a larger document. View the larger documentDescription
American chestnut (Castanea dentata (Marsh.) Borkh.) once was a primary hardwood species in forests of the eastern United States. Sometime during the late 18th century, it is speculated that Phytophthora cinnamomi, which causes Phytophthora root rot (PRR) on many woody plant species, was introduced to the southeast region of the United States, and this pathogen spread as people moved inland from the coast (Zentmyer 1980). In the 1800s, PRR (also known as ink disease) caused extensive mortality to American chestnut trees in the southern portion of its range (Freinkel 2007, Zentmyer 1980). Then, in the early 1900s, chestnut blight, caused by Cryphonectria parasitica, almost eliminated American chestnut trees from eastern forests (Freinkel 2007). Since 1989, The American Chestnut Foundation (TACF) has been producing hybrid chestnut seedlings by crossing Chinese chestnut (C. mollissima), which is resistant to C. parasitica, with American chestnut and then backcrossing progeny to C. dentata to produce resistant American-type chestnut trees. Since 2000, hybrid seedlings planted in some locations in southeastern states have died from PRR before they could be challenged by naturally-occurring populations of C. parasitica. Therefore, we wanted to determine if any of the backcross trees selected for resistance to C. parasitica were resistant to P. cinnamomi as well because Chinese chestnut also is resistant to this pathogen.Publication Notes
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Citation
Jeffers, Steven N.; Meadows, Inga M.; James, Joseph B.; Sisco, Paul H. 2012. Resistance to Phytophthora cinnamomi among seedlings from backcross families of hybrid american chestnut. In: Sniezko, Richard A.; Yanchuk, Alvin D.; Kliejunas, John T.; Palmieri, Katharine M.; Alexander, Janice M.; Frankel, Susan J., tech. coords. Proceedings of the fourth international workshop on the genetics of host-parasite interactions in forestry: Disease and insect resistance in forest trees. Gen. Tech. Rep. PSW-GTR-240. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture. pp. 194-195.Keywords
forest disease and insect resistance, evolutionary biology, climate change, durable resistanceRelated Search
- Lessons from the field: The first tests of restoration American chestnut (Castanea dentata) seedlings planted in the Southern Region
- Leaf physiology and morphology of Castanea dentata (Marsh) Borkh., Castanea mollissima Blume, and three backcross breeding generations planted in the southern Appalachians, USA
- Nut cold hardiness as a factor influencing the restoration of American chestnut in northern latitudes and high elevations
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https://www.fs.usda.gov/treesearch/pubs/44905