Precioza
ActiveCucurbita pepo L. · Field pumpkin
HM.CLAUSE
FR
3 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.
Midnight
ActiveCucurbita pepo L. · Field pumpkin
A L TOZER LTD
NL
3 records
EX 04847330
ActiveCucurbita pepo L. · Field pumpkin
Seminis Vegetable Seeds
NL
5 records
Sirio
ActiveCucurbita pepo L. · Field pumpkin
CORA SEEDS S.R.L
PL
2 records
Manureva
ActiveCucurbita pepo L. · Field pumpkin
HM.Clause S.A.S.
FR
3 records
Cardea
ActiveCucurbita pepo L. · Field pumpkin
agro- Tip Handels-u. Consultingges. mbH
PT
2 records
Iberna
ActiveCucurbita pepo L. · Field pumpkin
HM.Clause S.A.S.
FR
3 records
Céleste
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records
GL Ludwig
ActiveCucurbita pepo L. · Field pumpkin
Saatzucht Gleisdorf
AT
2 records
Inessa
ActiveCucurbita pepo L. · Field pumpkin
Enza Zaden Beheer B.V.
NL
UA
2 records
Patroklos
ActiveCucurbita pepo L. · Field pumpkin
UNITED GENETICS ITALIA S.P.A
PT
2 records
Nour
ActiveCucurbita pepo L. · Field pumpkin
Enza Zaden Beheer B.V.
NL
3 records
Okxo
ActiveCucurbita pepo L. · Field pumpkin
Sakata Seed Sudamerica Ltd (BR)
FR
2 records
Kasos
ActiveCucurbita pepo L. · Field pumpkin
Syngenta Seeds B.V.
NL
2 records
Caliph
TerminatedCucurbita pepo L. · Field pumpkin
Harris Moran Seed Company (USA) (US)
FR
2 records
Shyva
WithdrawnCucurbita pepo L. · Field pumpkin
HM.Clause S.A.S.
FR
2 records
Quirinal
TerminatedCucurbita pepo L. · Field pumpkin
Seminis Vegetable Seeds France (FR)
FR
2 records
Maveric
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
3 records
Leonardo
ActiveCucurbita pepo L. · Field pumpkin
SEMILLAS FITO, S.A.
ES
2 records
Palladion
ActiveCucurbita pepo L. · Field pumpkin
Syngenta Crop Protection AG
NL
4 records
Tethys
ActiveCucurbita pepo L. · Field pumpkin
HM Clause SA (FR)
FR
2 records
Teti
ActiveCucurbita pepo L. · Field pumpkin
Enza Zaden Beheer B.V.
NL
2 records
Alcazar
ActiveCucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
FR
2 records
Ebony Acorn
TerminatedCucurbita pepo L. · Field pumpkin
Pieterpik B.V.
NL
2 records