High/standard resistance (HR): plant varieties that highly restrict the growth and development of the specified pest or pathogen under
normal pest or pathogen pressure when compared to susceptible varieties. These plant varieties may, however, exhibit some symptoms or
damage under heavy pest or pathogen pressure.
Moderate/intermediate resistance (IR): plant varieties that restrict the growth and development of the specified pest or pathogen, but may
exhibit a greater range of symptoms or damage compared to high/standard resistant varieties. Moderately/intermediately resistant plant
varieties will still show less severe symptoms or damage than susceptible plant varieties when grown under similar environmental conditions
and/or pest or pathogen pressure