Westham
TerminatedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Diseases
Powdery mildew of lettuce
Lactuca sativa L.
A fungal disease of lettuce caused by the pathogens Golovinomyces cichoracearum and Golovinomyces bolayi. It manifests as a white coating on leaves and stems, causing chlorosis, deformation, and tissue necrosis.
In the reference 231 varieties crop Lettuce, where this is mentioned in the description.
The disease is caused by fungi of the Erysiphaceae family, predominantly Golovinomyces cichoracearum and Golovinomyces bolayi. The disease is characterized by the appearance of white powdery mycelium on leaf surfaces and stems. As the infection develops, the affected tissues yellow and curl, and as the disease progresses, they turn brown and die.
Pathogen development is favored by greenhouse conditions, including high humidity, insufficient ventilation, and dense planting. Unlike downy mildew, there is no widely accepted race classification system or standardized gene designation for resistance breeding for lettuce powdery mildew. Commercial lettuce varieties are predominantly susceptible, and sources of resistance have been identified primarily in wild species Lactuca saligna and Lactuca virosa.
General information about the subject — on the page Powdery mildew.
Varieties of Lettuce 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.
Ticarinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Thea
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
6 records
Tapioca
Application submittedLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
6 records
Sotalis
ActiveLactuca sativa L. · Lettuce
Bejo Zaden B.V.
NL
4 records
Shentaï
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Sendanas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Salvius
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Sahim
ActiveLactuca sativa L. · Lettuce
MORAVOSEED
CZ
3 records
Ruby Sky
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Rictus
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Printinas
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Presteria
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Naturabella
ActiveLactuca sativa L. · Lettuce
Vilmorin-Mikado S.A.S.
FR
4 records
Melvine
ActiveLactuca sativa L. · Lettuce
HM.CLAUSE
FR
4 records
Maltita
Application submittedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Madelona
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Lucbee
ActiveLactuca sativa L. · Lettuce
Nunhems B.V., 6083 AB Nunhem
NL
5 records
LS16748
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
5 records
Louxal
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
5 records
Lioba
ActiveLactuca sativa L. · Lettuce
ENZA ZADEN
NL
4 records
Lesina
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Kinevia
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Kiden
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records