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Title: Generation of American elm trees with tolerance to Dutch elm disease through controlled crosses and selection

Author: Slavicek, James M.; Knight, Kathleen S.;

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. 342-346

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: The goal of our research and development efforts is to generate new and/or improved selections of the American elm (Ulmus americana L.) with tolerance/resistance to Dutch elm disease (DED). The approaches we are taking for this effort include: 1) controlled breeding using known DED -tolerant selections, 2) controlled breeding using DED-tolerant selections and local escape/survivor trees from specific geographic areas to generate site-adapted and DED-tolerant selections, 3) screening of escape/survivor trees for tolerance to DED, and 4) identification of additional American elm escape/survivor trees across its range. Our efforts in these areas are described. Progeny trees generated from crosses of Delaware 2 x New Harmony, Valley Forge x New Harmony, R18-2 x New Harmony, and Valley Forge x R18-2 exhibited a significantly lower mean of foliar symptoms at 8 to 9 weeks compared to the susceptible control.

Keywords: American elm, Ulmus americana, Dutch elm disease resistance, tolerance

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Citation:


Slavicek, James M.; Knight, Kathleen S. 2012. Generation of American elm trees with tolerance to Dutch elm disease through controlled crosses and selection. 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. 342-346.

 


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