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Cucumber UK Winter Spring 2021-2022

  • Text
  • Varieties
  • Zaden
  • Enza
  • Mildew
  • Powdery
  • Pest
  • Cucumber
  • Variety
  • Crop
  • Resistance

Resistances Explanation

Resistances Explanation of used abbreviations Resistances in varieties of our crops will be coded (please, see our coding list on www.enzazaden.com for explanation), unless indicated otherwise. Code Engish name Scientific name pathogen ISF Level of resistance Varieties claiming the same level of resistance against a specific pest or pathogen may exhibit a different resistance response due to a different genetic makeup of a variety. It is to be noted that if a resistance is claimed in a plant variety it is limited to the specified biotypes, pathotypes, races or strains of the pest or pathogen. Fungus Cca Ccu Corynespora blight and target spot Scab and gummosis Corynespora cassiicola Cladosporium cucumerinum HR HR If no biotypes, pathotypes, races or strains are specified in the resistance claim for the variety, it is because no generally accepted classification of the cited pest by biotype, pathotype, race or strain exists. In this case resistance is only claimed against certain not further specified isolates of that pathogen. New biotypes, pathotypes, races or strains that may emerge are not covered by the original resistance claim. Virus Px Powdery mildew CMV Cucumber mosaic CVYV Cucumber vein yellowing Podosphaera xanthii (ex. Sphaerotheca fuliginea) Cucumber mosaic virus Cucumber vein yellowing virus IR, HR IR IR Immunity: not subject to attack or infection by a specified pest or pathogen. Resistance: the ability of a plant variety to restrict the growth and development of a specified pest or pathogen and/or the damage they cause when compared to susceptible plant varieties under similar environmental conditions and pest or pathogen pressure. Resistant varieties may exhibit some disease symptoms or damage under heavy pest or pathogen pressure. CGMMV Cucumber green mottle Cucumber green mottle mosaic virus IR, HR Two levels of resistance are defined: • High 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. • 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 highly resistant varieties. Intermediate 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. Susceptibility: the inability of a plant variety to restrict the growth and development of a specified pest or pathogen. Tolerance: the ability of a plant variety to endure abiotic stress without serious consequences for growth, appearance and yield. Vegetable companies will continue to use tolerance for abiotic stress. Full explanation available on www.enzazaden.com Disclaimer Descriptions, recommendations and illustrations in brochures and leaflets shall correspond as closely as possible to tests and practical experience and are subject to typographical and/or printing errors. This information shall be provided to assist professional growers and users, whereby variable local conditions must be taken into account. Under no circumstances shall Enza Zaden accept liability based on such information for deviating results in the cultivated product. Current information concerning the resistances is available on www.enzazaden.com/uk © Enza Zaden | Enkhuizen | The Netherlands | October 2021 10 | Enza Zaden Enza Zaden | 11

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