Diseases
Petroselinum crispum (Mill.) Nyman ex A. W. Hill
The term "curl" in parsley is used as a morphological varietal trait or as a symptom of viral infection or boron deficiency. In parsley breeding, this concept is not a specific disease, and the intensity of leaf blade curling is evaluated on a standard scale as a varietal distinction.
In the reference 12 varieties crop Parsley, where this is mentioned in the description.
For parsley, curling can be both a varietal characteristic and a sign of pathological changes. Within the framework of distinctness, uniformity, and stability (DUS) testing, the intensity of leaf blade curling is classified on a scale from weak to very strong and serves as a morphological trait.
As a pathological symptom, leaf deformation and curling can be caused by the Parsley severe stunt-associated virus (PSSaV) or the Beet curly top virus (BCTV), which is transmitted by the leafhopper Circulifer tenellus. Furthermore, leaf curling is induced by boron deficiency in the soil, leading to tissue necrosis.
Currently, there are no specific pathogen races identified that cause "curl" as a distinct parsley disease. There is also no available data on the existence of specific resistance genes in the crop against viral infections accompanied by such symptoms.
General information about the subject — on the page Peach leaf curl.
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.
Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley
Semenarna Ljubljana, SI
Petroselinum crispum (Mill.) Nyman ex A. W. Hill · Parsley