Diseases
Malus domestica (Suckow) Borkh.
A fungal disease of apple trees caused by the ascomycete fungus Venturia inaequalis, affecting all aerial parts of the plant. The disease manifests as characteristic dark spots with a velvety coating, causing fruit deformation, premature leaf drop, and reduced crop quality.
In the reference 1 949 varieties crop Apple, where this is mentioned in the description.
The pathogen is the highly specialized parasite Venturia inaequalis. The fungus's life cycle includes a teleomorph, which overwinters in fallen leaves, and an anamorph, Fusicladium dendriticum, responsible for secondary infection during the growing season. The disease affects leaves, petioles, pedicels, and fruits, on which spots with an olive-black coating form, leading to cracking and tissue deformation.
Genetic resistance of varieties to the pathogen is associated with Rvi loci. The most well-known is the Rvi6 gene, previously designated as Vf; however, the high variability of the fungal population has led to the emergence of race 6 of the pathogen, which is capable of overcoming this resistance. To ensure long-term immunity, breeding programs are focused on pyramiding several resistance genes, such as Rvi2, Rvi3, Rvi5, and Rvi15.
General information about the subject — on the page Scab.
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 domestica (Suckow) Borkh. · Apple
Vailima Orchard Ltd (NZ)
Malus domestica (Suckow) Borkh. · Apple
Institut Français des Productions Cidricoles (I.F.P.C.), Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Malus domestica (Suckow) Borkh. · Apple
Siegfried Perathoner
Malus domestica (Suckow) Borkh. · Apple
CRA-W
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris (FR)/Institut National de la Recherche Agronomique (FR)
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris (FR)/Davodeau Ligonniere Sarl (FR)
Malus domestica (Suckow) Borkh. · Apple
Magdolna Tóth^^^Emese Veres
Malus domestica (Suckow) Borkh. · Apple
SNC Elaris| FR
Malus domestica (Suckow) Borkh. · Apple
V.O.F. VANDEWALL
Malus domestica (Suckow) Borkh. · Apple
CRA-W
Malus domestica (Suckow) Borkh. · Apple
EARL des Sources (FR)
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
LITOVSKIJ NII SADOVODSTVA I OVOSHHEVODSTVA
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus domestica (Suckow) Borkh. · Apple
ZOUK bvba, BE3800 Sint-Truiden
Malus domestica (Suckow) Borkh. · Apple
Michelangelo Leis^^^Alessio Martinelli
Malus domestica (Suckow) Borkh. · Apple
Horticulture & Food Research Institute of New Zealand Ltd
Malus domestica (Suckow) Borkh. · Apple
Jan Zima Institute of Experimental Botany / Jaroslav Tupy Institute of Experimental Botany / Otto Louda Institute of Experimental Botany / Radek Cerny Institute of Experimental Botany
Malus domestica (Suckow) Borkh. · Apple
Markus Kobelt
Malus domestica (Suckow) Borkh. · Apple
RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»
Malus domestica (Suckow) Borkh. · Apple
De Wit Inge / Eyssen Hendrik / Keulemans Johan / Nicolai Johan / Pauwels Els / Laer Paul Van
Malus domestica (Suckow) Borkh. · Apple
RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»