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Título: | Identification of Sources of Resistance to Xanthomonas campestris pv. campestris in Brassica napus Crops |
Autor: | Lema Márquez, Margarita CSIC ORCID; Soengas Fernández, María del Pilar; Velasco Pazos, Pablo CSIC ORCID; Francisco Candeira, Marta CSIC ORCID; Cartea González, María Elena CSIC ORCID | Fecha de publicación: | mar-2011 | Editor: | American Phytopathological Society | Citación: | Plant Disease 95(3): 292-297 (2011) | Resumen: | Black rot, caused by Xanthomonas campestris pv. campestris, is one of the most important diseases affecting Brassica crops worldwide. Nine races have been differentiated in X. campestris pv. campestris, with races 1 and 4 being the most virulent and widespread. The objective of this work was to identify sources of resistance to races 1 and 4 of X. campestris pv. campestris in different Brassica napus crops, mainly in the underexplored pabularia group. Seventy-six accessions belonging to four B. napus groups were screened for resistance to two X. campestris pv. campestris races (1 and 4). The strain of race 1 used in this study was more virulent on the tested materials than the strain of race 4. No race-specific resistance was found to race 1. Most cultivars were susceptible except Russian kale, from the pabularia group, which showed some resistant plants and some other accessions with some partially resistant plants. High levels of race-specific resistance to race 4 were found in the pabularia group, and great variability within accessions was identified. Three improved cultivars (Ragged Jack kale, Friese Gele, and Valle del Oro) and four landraces (Russian kale, MBG-BRS0037, MBG-BRS0041, and MBG-BRS0131) showed plants with some degree of resistance to both races, which may indicate that race-nonspecific resistance is involved. These accessions could be directly used in breeding programs, either as improved cultivars or as donors of race-specific resistance to other Brassica cultivars. | Versión del editor: | http://dx.doi.org/10.1094/PDIS-06-10-0428 | URI: | http://hdl.handle.net/10261/99358 | DOI: | 10.1094/PDIS-06-10-0428 | Identificadores: | issn: 0191-2917 |
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Identification_of_Sources_of_Resistance.pdf | 182,63 kB | Adobe PDF | Visualizar/Abrir |
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