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Artificial Hybridization and Grafting Methods With Ulmus Americana

Since 1957, a study of artificial hybridization and grafting methods using the American elm, Ulmus Americana, has been under way at the State University, College of Forestry at Syracuse University, Syracuse, New York. This project was added to the existent forest-tree improvement program of the Silviculture Department to (1) perfect the hybridization method of using cut-off elm branches in the greenhouses (2) determine the best possible method of grafting to be used with U. americana; (3) provide hybrid seed and material of U. americana that is more or less resistant to the fungus Ceratocystis ulmi, causal agent of the Dutch elm disease.


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Author(s): John A. Winieski

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1959