caa a22 4500 467929106 CHVBK 20180406152938.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1007/s10658-005-3683-5 doi (NATIONALLICENCE)springer-10.1007/s10658-005-3683-5 Major gene resistance in Brassica napus (oilseed rape) is overcome by changes in virulence of populations of Leptosphaeria maculans in France and Australia [Elektronische Daten] [Susan Sprague, Marie-Hélène Balesdent, Hortense Brun, Helen Hayden, Stephen Marcroft, Xavier Pinochet, Thierry Rouxel, Barbara Howlett] Resistance of Brassica napus (oilseed rape, canola) conferred by three different major resistance genes has been overcome by changes in virulence of Leptosphaeria maculans populations in France and Australia. In South Australia where B. napus cultivars with major gene resistance derived from Brassica rapa ssp. sylvestris were grown extensively, resistance was rendered ineffective within 3years of commercial release of the cultivar. Disease severity was higher on cultivars with sylvestris-derived resistance than cultivars with polygenic resistance. This Australian situation is compared to that in France, where resistance conferred by the Rlm1 gene was overcome nation-wide in 5years under commercial cropping practices, and also where a source of resistance introgressed into B. napus from B. juncea was rendered inefficient in 3years in experimental field plots near Rennes. Springer, 2006 blackleg nationallicence Brassica rapa ssp. sylvestris nationallicence Phoma lingam nationallicence resistance nationallicence Sprague Susan School of Botany, The University of Melbourne, VIC 3010, Australia aut Balesdent Marie-Hélène INRA-PMDV, Route de St Cyr, 78026, Versailles Cedex, France aut Brun Hortense INRA Agrocampus Rennes, UMR BiO3P, Domaine de la Motte, F-35653 Le Rheu, 35327, Cedex, BP, France aut Hayden Helen School of Botany, The University of Melbourne, VIC 3010, Australia aut Marcroft Stephen Marcroft Grains Pathology, 3400, Horsham, Victoria, Australia aut Pinochet Xavier CETIOM (Centre Technique Interprofessionnel des Oléagineux Métropolitains), Scientific Direction, BP4, 78850, Thiverval-Grignon, France aut Rouxel Thierry INRA-PMDV, Route de St Cyr, 78026, Versailles Cedex, France aut Howlett Barbara School of Botany, The University of Melbourne, VIC 3010, Australia aut European Journal of Plant Pathology Kluwer Academic Publishers 114/1(2006-01-01), 33-40 0929-1873 114:1<33 2006 114 10658 https://doi.org/10.1007/s10658-005-3683-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10658-005-3683-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sprague Susan School of Botany, The University of Melbourne, VIC 3010, Australia aut NATIONALLICENCE 700 1- Balesdent Marie-Hélène INRA-PMDV, Route de St Cyr, 78026, Versailles Cedex, France aut NATIONALLICENCE 700 1- Brun Hortense INRA Agrocampus Rennes, UMR BiO3P, Domaine de la Motte, F-35653 Le Rheu, 35327, Cedex, BP, France aut NATIONALLICENCE 700 1- Hayden Helen School of Botany, The University of Melbourne, VIC 3010, Australia aut NATIONALLICENCE 700 1- Marcroft Stephen Marcroft Grains Pathology, 3400, Horsham, Victoria, Australia aut NATIONALLICENCE 700 1- Pinochet Xavier CETIOM (Centre Technique Interprofessionnel des Oléagineux Métropolitains), Scientific Direction, BP4, 78850, Thiverval-Grignon, France aut NATIONALLICENCE 700 1- Rouxel Thierry INRA-PMDV, Route de St Cyr, 78026, Versailles Cedex, France aut NATIONALLICENCE 700 1- Howlett Barbara School of Botany, The University of Melbourne, VIC 3010, Australia aut NATIONALLICENCE 773 0- European Journal of Plant Pathology Kluwer Academic Publishers 114/1(2006-01-01), 33-40 0929-1873 114:1<33 2006 114 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer