Tiziano
ActiveCucurbita pepo L. · Field pumpkin
SEMILLAS FITO, S.A.
ES
4 records
Diseases
Powdery mildew of zucchini
Cucurbita pepo L.
A fungal disease of zucchini caused by obligate biotrophic fungi Podosphaera xanthii and Golovinomyces cichoracearum. It manifests as a white powdery coating on the upper leaf surface, which eventually spreads to all above-ground plant organs.
In the reference 333 varieties crop Field pumpkin, where this is mentioned in the description.
The pathogens Podosphaera xanthii and Golovinomyces cichoracearum can develop either individually or together, forming a mixed infection. Symptoms of the disease begin to appear on the upper surface of the leaves as localized light spots that gradually enlarge, coalesce, and transform into a dense “felty” coating, spreading to petioles and stems. Under conditions of severe infection, plant tissues become chlorotic, toughen, and die.
The development of the pathogens is favored by moderate temperatures in the range of 18–25°C, high air humidity, and dense planting that limits ventilation. Genetic resistance of the crop to the disease is most often polygenic and classified as intermediate. In zucchini breeding, the PMR label is used to indicate the ability of plants to suppress infection development, although specific alphanumeric gene designations are rarely encountered in general practice.
General information about the subject — on the page Powdery mildew.
Varieties of Field pumpkin mentioned in the description
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.
Galactée
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
3 records
Pixar
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records
Topazio
ActiveCucurbita pepo L. · Field pumpkin
Syngenta Seeds B.V.
NL
2 records
Samsara
ActiveCucurbita pepo L. · Field pumpkin
Sativa Rheinau AG (CH)
FR
2 records
Harlequin
Application submittedCucurbita pepo L. · Field pumpkin
RUPP SEEDS INC
FR
3 records
Noah
ActiveCucurbita pepo L. · Field pumpkin
Sakata Seed Sudamerica Ltd (BR)
FR
2 records
Luneor
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records
Early Prince
WithdrawnCucurbita pepo L. · Field pumpkin
Syngenta Crop Protection AG
NL
2 records
Jago
ActiveCucurbita pepo L. · Field pumpkin
UNITED GENETICS SEEDS CO
PT
2 records
Calida
TerminatedCucurbita pepo L. · Field pumpkin
Clause Tezier, FR
FR
2 records
Zolotinka
ActiveCucurbita pepo L. · Field pumpkin
KLIMENKO NIKOLAJ NIKOLAEVICh / MAKSIMOV SERGEJ VASIL'EVICh / HOVRIN ALEKSANDR NIKOLAEVICh
UA
2 records
Corinto
ActiveCucurbita pepo L. · Field pumpkin
Sakata Seed Sudamerica Ltd (BR)
FR
2 records
Nieves
ActiveCucurbita pepo L. · Field pumpkin
ZETA SEEDS S.L.
ES
2 records
Calabonita
ActiveCucurbita pepo L. · Field pumpkin
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
2 records
Mexicana
ActiveCucurbita pepo L. · Field pumpkin
Enza Zaden Beheer B.V.
NL
2 records
Ibis F.1
ActiveCucurbita pepo L. · Field pumpkin
IT
3 records
Astra Polka
ActiveCucurbita pepo L. · Field pumpkin
W. LEGUTKO PRZEDSIEBIORSTWO HODOWLANO NASIENNE SP.Z.O.O
PL
3 records
UG 436
ActiveCucurbita pepo L. · Field pumpkin
UNITED GENETICS SEEDS CO
PT
2 records
Broncos
ActiveCucurbita pepo L. · Field pumpkin
Syngenta Crop Protection AG
NL
4 records
Dolmas
ActiveCucurbita pepo L. · Field pumpkin
Syngenta Seeds B.V.
NL
2 records
Ariane
TerminatedCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records
Lady Godiva
ActiveCucurbita pepo L. · Field pumpkin
Domaine Public (FR)
FR
2 records
Gravity
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records