Xemerius
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Diseases
Fusarium wilt of lettuce
Lactuca sativa L.
Tracheomycotic wilt of lettuce caused by the soil-borne fungus Fusarium oxysporum f. sp. lactucae. The disease affects the plant's vascular system, leading to yellowing, loss of turgor, and death.
In the reference 671 varieties crop Lettuce, where this is mentioned in the description.
The causal agent of the disease is the fungus Fusarium oxysporum f. sp. lactucae, which includes four main races: Fol: 1, 2, 3, and 4. The pathogen exhibits high variability, as evidenced by the identification of new isolates capable of overcoming the resistance of existing varieties.
Key symptoms of infection include chlorosis and unilateral wilting, which begin to appear from the 3–4 true leaf stage. A diagnostic sign is the browning of the vascular tissue on a cross-section of the stem. The disease develops most intensely at a soil temperature of approximately +27...+28°C.
Breeding efforts are aimed at developing hybrids resistant to combinations of pathogen races. In official catalogs, resistance is indicated by marker designations such as Fol: 1, Fol: 1–4, or Fusarium Defense, which confirms the presence of genetic protection against the corresponding types of the fungus.
General information about the subject — on the page Fusarium wilt and blight.
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.
Fosca
ActiveLactuca sativa L. · Lettuce
Maraldi Sementi SRL (IT)
FR
3 records
Paulana
Application submittedLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
2 records
Kantai
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Ladyga
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Latoya
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Saona
Application submittedLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
2 records
Flamingo
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Salvador
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Golem
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Kildary
ActiveLactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
FR
2 records
Gomer
ActiveLactuca sativa L. · Lettuce
RAMIRO ARNEDO, S.A.
ES
2 records
Alpera
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Lagatta
TerminatedLactuca sativa L. · Lettuce
Nunhems B.V.
NL
4 records
Tarantela
ActiveLactuca sativa L. · Lettuce
Vilmorin-Mikado SAS (FR)
FR
3 records
Konzugo
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Lirina
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
7 records
Liboga
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
4 records
Houston
WithdrawnLactuca sativa L. · Lettuce
VILMORIN-MIKADO USA
Brillita
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Alquijote
Application submittedLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
3 records
Aquarita
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Ice Willow
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
4 records
Salazara
Application submittedLactuca sativa L. · Lettuce
Nunhems Netherlands B.V.
NL
3 records