Coding list cucumber diseases
|Scientific name Virus||English Name||Code|
|Cucumber mosaic virus||Cucumber mosaic||CMV|
|Cucumber vein yellowing virus||Cucumber vein yellowing||CVYV|
|Cucurbit yellow stunting disorder virus||Cucumber yellowing stunting disorder||CYSDV|
|Cucumber green mottle mosaic virus||Cucumber green mottle||CGMMV|
|Melon necrotic spot virus||Melon necrosis||MNSV|
|Cladosporium cucumerinum||Scab and gummosis||Ccu|
|Corynespora casiicola||Corynespora blight and target spot||Cca|
|Fusarium oxysporum f.sp. cucumerinum||Fusarium wilt||Foc|
|Podosphaera xanthii||Powdery mildew||Px|
|Pseudoperonospora cubensis||Downy mildew||Pcu|
Resistances in varieties of our crops will be coded (see coding list at www.sanaseeds.com), unless indicated otherwise.
Terminology and definitions
a. ‘Immunity’ means not subject to attack or infection by a specified pest or pathogen.
b. ‘Resistance’ is 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 of pathogen pressure.
Two levels of resistance are defined:
I. 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.
II. 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. 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.
c. ‘Susceptibility’ is the inability of a plant variety to restrict the growth and development of a specified pest or pathogen.