Common use of Resistance Clause in Contracts

Resistance. the ability of a plant variety to restrict the growth and development of a specified pathogen or pest and/or the damage they cause when compared to susceptible plant varieties under similar environmental factors and pathogen or pest pressure. Resistant varieties may exhibit some disease symptoms or damage under heavy pathogen or pest pressure. Two levels of resistance are defined: (i) High resistance (HR*): plant varieties that highly restrict the growth and development of the specified pathogen or pest under normal pathogen or pest pressure when compared to susceptible varieties. These plant varieties may, however, exhibit some symptoms or damage under heavy pathogen pressure. (ii) Intermediate resistance (IR*): plant varieties that restrict the growth and development of the specified pathogen or pest but may exhibit a greater range of symptoms or damage compared to resistant varieties. Moderately/intermediately resistant plant varieties will still show less severe symptoms or damage than susceptible plant varieties when grown under similar environmental factors and/or pathogen or pest pressure. * The standard abbreviations HR (high resistance) and IR (intermediate resistance) are used in all languages.