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Variability in degree of fire blight resistance within and between Pyrus species,interspecific hybrids,and seedling progenies |
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| Authors: | T. Van Der Zwet W. A. Oitto M. N. Westwood |
| Affiliation: | 1. United States Department of Agriculture, Beltsville, Maryland, USA 2. Ohio Agricultural Research and Development Center, Wooster, Ohio, USA 3. Oregon State University, Corvallis, Oregon, USA |
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