Diseases
Daucus carota L.
A dangerous disease of carrots caused by the fungus Sclerotinia sclerotiorum, which leads to the softening of root tissues and the formation of cottony mycelium with sclerotia. The disease causes major damage during crop storage, leading to the rapid spread of infection in focal points.
In the reference 5 varieties crop Carrot, where this is mentioned in the description.
The causative agent of the disease is the pathogenic fungus Sclerotinia sclerotiorum, capable of persisting in the soil in the form of black sclerotia ranging from 0.2 mm to 1 cm in diameter. In field conditions, the infection often manifests at the base of leaf petioles, causing them to yellow and wilt, after which the pathogen penetrates the root.
A characteristic sign of carrot infestation is the softening of tissues, turning them into a watery mass without changing the natural color of the root and without a distinct putrid odor. The surface of the affected area becomes covered with abundant white mycelium, on which sclerotia eventually form, often accompanied by the secretion of clear liquid droplets.
No specific races of the fungus or identified resistance genes in carrots have been determined. Breeding is conducted by evaluating cultivars for tolerance to infestation under artificial or natural infection conditions, using scales to assess the percentage of the root surface area affected.
General information about the subject — on the page White mold.
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.
Daucus carota L. · Carrot
Vilmorin SA (FR)
Daucus carota L. · Carrot
Ger Beemsterboer
Daucus carota L. · Carrot