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Artificial Hybridization in the Genus Ulmus

Nearly all of the species in the genus Ulmus growing in the Northeastern United States are attacked by Dutch elm disease ( Ceratocystis ulmi ). With this fact in mind, the primary objective of this hybridization study was to produce plant material which might be fully, or at least to a certain degree, resistant to the Dutch elm disease. The study was conducted by making both intraspecific and interspecific crosses.


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Author(s): Samuel P.K. Britwam

Publication: Tree Improvement and Genetics - Northeastern Forest Tree Improvement Conference - 1960