American Chestnut (Castanea dentata) - A Great American Tree ...
American Chestnut (Castanea dentata) - A Great American Tree ...
American Chestnut (Castanea dentata) - A Great American Tree ...
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TACF‟s BackcrossBreeding ProgramChineseX<strong>American</strong>Each generation select for: Blight resistance <strong>American</strong> characteristicsF 1 ½ <strong>American</strong> (50%)BC 1 ¾ <strong>American</strong> (75%)XX<strong>American</strong><strong>American</strong>Final Product: goal is truebreeding<strong>American</strong> typewith a high levelof blight resistanceBC 2 7 / 8 <strong>American</strong> (88%)BC 3 15 / 16 <strong>American</strong> (94%)XX<strong>American</strong>BC 3BC 3 F 2 15 / 16 <strong>American</strong> (94%)XBC 3 F 2BC 3 F 3 15 / 16 <strong>American</strong> (94%)