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
Prof. Dr. Christa Fischer
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Christa Fischer
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Piet de SONNAVILLE (NL)
Malus domestica (Suckow) Borkh. · Apple
VAN WELL NURSERY (US)
Malus domestica (Suckow) Borkh. · Apple
Wallace F. Gale y Gertrude Gale
Malus domestica (Suckow) Borkh. · Apple
Purdue Research Foundation (US)
Malus domestica (Suckow) Borkh. · Apple
Vivai Fratelli Zanzi Di Carlo Zanzi E C S.A.S. (IT)
Malus domestica (Suckow) Borkh. · Apple
Neumuller Michael
Malus domestica (Suckow) Borkh. · Apple
Top Plant Vivai (IT)
Malus domestica (Suckow) Borkh. · Apple
STICHTING DLO-CENTRUM VOOR PLANTENVEREDELINGS-EN
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Hanna Schmidt / Dr. Jutta Krüger in Bundesforschungsanstalt für gartenbauliche Pflanzenzüchtung
Malus domestica (Suckow) Borkh. · Apple
Schniga GmbH (IT)
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Zima Jan, Louda Otto, Tupy Jaroslav,
Malus domestica (Suckow) Borkh. · Apple
Markus Kobelt
Malus domestica (Suckow) Borkh. · Apple
VNII SELEKCZII PLODOVYX KULTUR
Malus domestica (Suckow) Borkh. · Apple
SCHNIGA S.R.L.
Malus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
Malus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
Malus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
Malus domestica (Suckow) Borkh. · Apple
Dalival SAS (FR)
Malus domestica (Suckow) Borkh. · Apple
The Wislang Family Trust (NZ)
Malus domestica (Suckow) Borkh. · Apple
ZOUK bvba, BE3800 Sint-Truiden