Diseases
Cucumis sativus L.
A fungal disease of cucumber caused by the obligate parasites Podosphaera xanthii and Golovinomyces cichoracearum, characterized by the appearance of a white powdery coating on leaves and a reduction in the market quality of fruits.
In the reference 1 031 varieties crop Cucumber, where this is mentioned in the description.
The pathogens of the disease are the ascomycetes Podosphaera xanthii and Golovinomyces cichoracearum. The infection begins with the appearance of an inconspicuous white coating on the underside of the leaves, which later forms white spots on the upper side of the leaf blade, increasing in size and merging into a continuous coating.
As the disease progresses, the leaves become deformed, wavy, and dry out, and in cases of severe infection, the vines die. Although the pathogen rarely affects the fruits directly, the general dehydration of the plant leads to fruit dwarfing, loss of marketability, and the development of bitterness.
Genetic resistance of the crop is controlled by a group of recessive pm genes, including pm-1, pm-2, pm-3, and pm-h. In the international classification of varieties, resistance to the pathogens Px (Podosphaera xanthii) and Gc (Golovinomyces cichoracearum) is indicated by codes HR for high resistance and IR for intermediate resistance.
General information about the subject — on the page Powdery mildew.
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Cucumis sativus L. · Cucumber
IBEROSEEDS COMPAÑIA IBERICA DE SEMILLAS, S.L.
Cucumis sativus L. · Cucumber
SEMILLAS FITO, S.A.
Cucumis sativus L. · Cucumber
ROYAL SLUIS
Cucumis sativus L. · Cucumber
Krylov Oleh Mykolaiovych, Borysov Oleksandr Volodymyrovych,
Cucumis sativus L. · Cucumber
Harris Moran Seed Company (USA) (US)
Cucumis sativus L. · Cucumber
Hans Briuer
Cucumis sativus L. · Cucumber
Shamshyna Anna Viacheslavovna, Portiankin Alieksei Evhenovych, Havrysh Serhii Fedorovych,
Cucumis sativus L. · Cucumber
Havrysh Serhii Fedorovych, Dubinin Serhii Volodymyrovych,
Cucumis sativus L. · Cucumber
Ike Kampe
Cucumis sativus L. · Cucumber
Kees Reinink
Cucumis sativus L. · Cucumber
Khenk van Kooten
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
Suvorova Tetiana IAkovlivna, Khomchenko Nina Mykolaivna, Shevkunov Valerii Mykolaiovych, Shamshyna Hanna Viacheslavivna, Portiankin Oleksii IEvhenovych, Havrysh Serhii Fedorovych,
Cucumis sativus L. · Cucumber
Manier Tohumculuk
Cucumis sativus L. · Cucumber
Kees Reinink
Cucumis sativus L. · Cucumber
Muzhylko Viktor Valentynovych, Husieva Liudmyla Ivanivna, Horokhovs`kyi Vitalii Fedorovych,
Cucumis sativus L. · Cucumber
INTERSEMILLAS SAU
Cucumis sativus L. · Cucumber
HAZERA SEEDS BV
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
Shevchenko Andrii Oleksiiovych
Cucumis sativus L. · Cucumber
TAKII EUROPE B V
Cucumis sativus L. · Cucumber
Shevchenko Andrii Oleksiiovych
Cucumis sativus L. · Cucumber
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis sativus L. · Cucumber
FGUP ,,Volgogradsortsemovošč"