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
Information not available - Contact NL authorities
Malus domestica (Suckow) Borkh. · Apple
White Allan
Malus domestica (Suckow) Borkh. · Apple
Frederico Dernadi / Anisio Pedro Camilo
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Manfred Fischer / Heinz Murawski + im Institut für Obstforschung Dresden-Pillnitz / Dr. Johann Schmadlak / Prof. Dr. Christa Fischer
Malus domestica (Suckow) Borkh. · Apple
TOBUTT| K.R. Tobutt c/o Horticultural Research International
Malus domestica (Suckow) Borkh. · Apple
Red Moon, I
Malus domestica (Suckow) Borkh. · Apple
Julien Max|Saint Paul d'Espis, FR
Malus domestica (Suckow) Borkh. · Apple
Better3fruit NV, Belgium
Malus domestica (Suckow) Borkh. · Apple
Yves Lespinasse, INRA Institut National de la Recherche Agronomique
Malus domestica (Suckow) Borkh. · Apple
Stichting Wageningen Research-Wageningen Plant Research, Netherlands
Malus domestica (Suckow) Borkh. · Apple
White Allan
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
THE KENT INCORPORATED SOCIETY
Malus domestica (Suckow) Borkh. · Apple
RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»
Malus domestica (Suckow) Borkh. · Apple
Sally Mennell^^^Wilfrid Mennell
Malus domestica (Suckow) Borkh. · Apple
Markus Kellerhals Agroscope
Malus domestica (Suckow) Borkh. · Apple
THOR JOSEF /AGRICULTURAL COOPERATIVE SYCHROV
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Manfred Fischer / Heinz Murawski + im Institut für Obstforschung Dresden-Pillnitz / Prof. Dr. Christa Fischer
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
VERHAEGH| Jacobus Johannes Verhaegh
Malus domestica (Suckow) Borkh. · Apple
Pepinieres et Roseraies Georges Delbard| FR
Malus domestica (Suckow) Borkh. · Apple
National Fruit Trials (R. Stapleton)
Malus domestica (Suckow) Borkh. · Apple