Disease resistance ratings should not be compared across different diseases. Each disease has its own severity and risk level, so the severity and management options for one disease may differ to those for another disease, even if the variety has the same rating for both diseases.
The Year-based East Coast Stripe Rust ratings represent the in-field disease response shown by a variety to naturally occurring stripe rust infection across multiple field sites in Eastern Australia in previous seasons. The assigned rating is based on the lowest rating/response of each variety to all of pathotypes present in the previous season/s. It is usually not possible to provide single pathotype ratings for stripe rust, as the prevalence and severity of the disease often results in all datasets being impacted by multiple pathotypes – this meant that infection levels could not be attributed to a specific pathotype.
In future seasons, the Stripe Rust ratings will be updated again will reflect the change in distribution of pathotypes in those seasons, and as a result the East Coast rating of some varieties is likely to change. It is for this reason that NVT pathologists always recommend consulting current disease guides, which are updated annually.
Disease Measurements with an accompany symbol, abbreviation or secondary rating may express varying levels of resistance or tolerance under different conditions. Rating differences are explained as follows:| , | Mixed phenotype |
| () | Outlier |
| - | Range |
| / | Pathotype differences |
| # | May be more susceptible to alternate pathotypes (Warning) |
| ^ | Line contains a few susceptible off types |
| + | Resistance may be greater than expected |
| (P) | Provisional rating |
Disease resistance ratings should not be compared across different diseases. Each disease has its own severity and risk level, so the severity and management options for one disease may differ to those for another disease, even if the variety has the same rating for both diseases.
The Year-based East Coast Stripe Rust ratings represent the in-field disease response shown by a variety to naturally occurring stripe rust infection across multiple field sites in Eastern Australia in previous seasons. The assigned rating is based on the lowest rating/response of each variety to all of pathotypes present in the previous season/s. It is usually not possible to provide single pathotype ratings for stripe rust, as the prevalence and severity of the disease often results in all datasets being impacted by multiple pathotypes – this meant that infection levels could not be attributed to a specific pathotype.
In future seasons, the Stripe Rust ratings will be updated again will reflect the change in distribution of pathotypes in those seasons, and as a result the East Coast rating of some varieties is likely to change. It is for this reason that NVT pathologists always recommend consulting current disease guides, which are updated annually.
Disease Measurements with an accompany symbol, abbreviation or secondary rating may express varying levels of resistance or tolerance under different conditions. Rating differences are explained as follows:| , | Mixed phenotype |
| () | Outlier |
| - | Range |
| / | Pathotype differences |
| # | May be more susceptible to alternate pathotypes (Warning) |
| ^ | Line contains a few susceptible off types |
| + | Resistance may be greater than expected |
| (P) | Provisional rating |