The American Chestnut FoundationÕs Breeding Program for Blight Resistance

Frederick V. Hebard, William Y. C. White & Shawn Yarnes
Meadowview Research Farms
14005 Glenbrook Ave.
Meadowview, VA 24361 USA
http://www.acffarms.org
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Backcrossing
More than one American chestnut line also is needed, also to avoid inbreeding, when B3s are intercrossed with each other.
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Sources of Blight Resistance
Number of Trees at Meadowview in 2008
TACF Meadowview Nut Harvest 2008
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Selection for Recurrent Type
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"Table 1."
Chestnut Blight Resistance Rating Scheme
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Blight-resistant Chinese to American B1-F2, ÔClapperÕ x ÔGraves.Õ

Obtaining trees like this suggests it should be possible to backcross the blight resistance of Chinese into American chestnut.
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