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
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.