Greenglace
ActiveLactuca sativa L. · Lettuce
NUNHEMS BV.HOLANDA
NL
15 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.
Multired 4
ActiveLactuca sativa L. · Lettuce
Nunhems B.V.
NL
11 records
Ice Wave
ActiveLactuca sativa L. · Lettuce
ZONNEVELD OLAF
NL
12 records
Greenflash
ActiveLactuca sativa L. · Lettuce
Nunhems B.V., 6083 AB Nunhem
NL
10 records
Bassari
ActiveLactuca sativa L. · Lettuce
NUNHEMS
NL
9 records
Argentinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
HR
NL
9 records
Thurinus
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
9 records
Saula
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
8 records
Nation
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
ES
FR
7 records
Cartagenas
ActiveLactuca sativa L. · Lettuce
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL BV
NL
9 records
Xandra
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Sartre
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Revolution
ActiveLactuca sativa L. · Lettuce
NUNHEMS ZADEN B.V.
NL
8 records
Exact
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Cortazar
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Bacchus
ActiveLactuca sativa L. · Lettuce
Vilmorin, F
FR
6 records
Alyssa
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Yecla
ActiveLactuca sativa L. · Lettuce
Enza Zaden, NL
NL
6 records
Vivanto
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Virgile
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
6 records
Vaidosa
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
7 records
Stanford
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
7 records
Silvinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Scamander
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records