Impact of major gene resistance management for sunflower on fitness of Plasmopara halstedii (downy mildew) populationsDenis Tourvieille de Labrouhe, Amandine Bordat, Jeanne Tourvieille, Emmanuelle Mestries, Pascal Walser, Nachaat Sakr, Mireille Ducher, François Delmotte and Felicity VearOCL, 17 1 (2010) 56-64DOI: https://doi.org/10.1051/ocl.2010.0291