Diseases
Bacteriosis of Paradise Apple
Malus pumila L. Mill.
Bacterial diseases of paradise apple (Malus pumila) include fire blight, bacterial canker, and crown gall, caused by Erwinia amylovora, Pseudomonas syringae, and Agrobacterium spp. respectively.
In the reference 12 varieties crop Paradise apple, where this is mentioned in the description.
The most significant disease for Malus pumila is fire blight, caused by the pathogen Erwinia amylovora. The infection manifests as sudden blackening and wilting of flowers, leaves, and shoots, giving them a scorched appearance, followed by the formation of necroses and cankers on the bark.
Bacterial canker, caused by Pseudomonas syringae, is characterized by the formation of cankers on tree branches and trunks. Crown gall, provoked by bacteria of the genus Agrobacterium, appears as galls (outgrowths) on the root system and root collar.
Resistance to fire blight in this crop is predominantly polygenic in nature and is associated with quantitative trait loci (QTL). Historical forms of Paradise rootstocks often demonstrate high susceptibility to this pathogen, which requires breeding control when they are used.
General information about the subject — on the page Bacterial diseases.
Varieties of Paradise apple 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.
No varieties yet.