Diseases
Malus pumila L. Mill.
A fungal disease of Malus pumila caused by the pathogen Podosphaera leucotricha, manifesting as a powdery coating on young shoots and leaves, leading to their deformation.
In the reference 4 varieties crop Paradise apple, where this is mentioned in the description.
The causative agent of powdery mildew in paradise apple is the fungus Podosphaera leucotricha (Ellis & Everh.) E.S. Salmon. The pathogen infects young leaves, inflorescences, and shoots, covering them with a characteristic white coating. As a result of the infection, tissues become deformed and brittle, and shoot growth intensity is significantly reduced, which increases the risk of winter freezing.
Severe infection leads to the shedding of inflorescences and reticulate corking of fruits, known as russeting. In genetic studies of the genus Malus, specific genes such as Pl-1, Pl-2, Pl-d, Pl-w, and Pl-m have been identified to control resistance to this pathogen; these are used in breeding programs to evaluate the susceptibility of the crop.
General information about the subject — on the page Powdery mildew.
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.
Malus pumila L. Mill. · Paradise apple
EAST MALLING RESEARCH ST. (GB)
Malus pumila L. Mill. · Paradise apple
EAST MALLING RESEARCH ST. (GB)
Malus pumila L. Mill. · Paradise apple
EAST MALLING RESEARCH ST. (GB)
Malus pumila L. Mill. · Paradise apple
Station de Recherche York (US)