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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.

Sources8

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.

Zembro

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
4 records

Maïko

Active

Lactuca sativa L. · Lettuce

Clause (FR)

FR
3 records

Fernandinas

Terminated

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
4 records

Lerinas

Terminated

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Morticia

Application submitted

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

FR
2 records

Sevenole

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

FR
3 records

Belicos

Active

Lactuca sativa L. · Lettuce

Gautier Semences SAS (FR)

FR
2 records

Victoire

Terminated

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Grazer Krauthäuptel 2

Active

Lactuca sativa L. · Lettuce

AUSTROSAAT Österr. Samenzucht- und Handels-AG

AT
2 records

Tsonga

Application submitted

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
3 records

Pleiade

Terminated

Lactuca sativa L. · Lettuce

Seminis Vegetable Seeds

NL
3 records

Otocar

Terminated

Lactuca sativa L. · Lettuce

Vilmorin-Mikado S.A.S.

FR
3 records

Styria

Terminated

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
6 records

Kilnsey

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

NL
5 records

Kagraner sommer

Terminated

Lactuca sativa L. · Lettuce

Service Officiel de Controle (FR)

FR IT
2 records

Kuduro

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado S.A.S.

FR
3 records

Panticosa

Active

Lactuca sativa L. · Lettuce

RAMIRO ARNEDO, S.A.

ES
2 records

Antivole

Application submitted

Lactuca sativa L. · Lettuce

Vilmorin-Mikado SAS (FR)

FR
2 records

Kleta

Active

Lactuca sativa L. · Lettuce

MERIDIEM SEEDS S.L.

ES
2 records

Van Sal

Protection expired

Lactuca sativa L. · Lettuce

GENECORP TECHNOLOGY

NL
3 records

Menthole

Active

Lactuca sativa L. · Lettuce

Vilmorin-Mikado S.A.S.

FR
3 records

Adanas

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
4 records

Dubared

Active

Lactuca sativa L. · Lettuce

CZ
2 records