Rhynchosporium leaf scald of hybrid ryegrass is caused by the fungus Rhynchosporium secalis and is assessed in breeding as a factor of the general sanitary state of crops.
In the reference
5
varieties
crop Hybrid ryegrass,
where this is mentioned in the description.
The causative agent of the disease in hybrid ryegrass is the fungus Rhynchosporium secalis. Due to the limited availability of specialized phytopathological data, the symptomatology of the infection in this species has not been differentiated in detail from manifestations in other cereal crops.
In variety testing and breeding practice, Rhynchosporium leaf scald is often accounted for in combination with Helminthosporium blight and powdery mildew as a single indicator of leaf area infestation. Specific resistance genes or differentiation of pathogen pathotypes for this species are not described in the literature, and variety resistance is usually characterized by the qualitative category of tolerance.
General information about the subject — on the page
Rhynchosporium.
Varieties of Hybrid ryegrass mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.