Origene Seeds

Disease resistance terminology

 

I - Immunity. Not subject to attack or infection by a specified pest or pathogen.

R - resistance. 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.
IR - Moderate/intermediate resistance. 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.
T - Tolerance.The ability of a plant variety to endure abiotic stress without serious
consequences for growth, appearance and yield. 
S - Susceptibility. The inability of a plant variety to restrict the growth and development of a
specified pest or pathogen.
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