Article
Molecular characterization of two types of resistance in sunflower to Plasmopara halstedii, the causal agent of downy mildew.
Phytopathology - 1 Aug 2011
Radwan Osman, Bouzidi Mohamed Fouad, Mouzeyar Said
Abstract excerpt
Depending on host-pathotype combination, two types of sunflower-Plasmopara halstedii incompatibility reactions have previously been identified. Type I resistance can restrict the growth of the pathogen in the basal region of the hypocotyls, whereas type II cannot, thus allowing the pathogen to reach the cotyledons. In type II resistance, a large portion of the hypocotyls is invaded by the pathogen and,...
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