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
Lenkijos sodininkystės ir gėlininkystės institutas
Malus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
Malus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
STICHTING WAGENINGEN RESEARCH-WAGENINGEN PLANT RESEARCH
Malus domestica (Suckow) Borkh. · Apple
Jerzy J. Bartoszewicz
Malus domestica (Suckow) Borkh. · Apple
Institute of Experimental Botany AS CR v.v.i.
Malus domestica (Suckow) Borkh. · Apple
Institute of Fruit Crops-Kyustendil
Malus domestica (Suckow) Borkh. · Apple
Gerhard Baab
Malus domestica (Suckow) Borkh. · Apple
N.V. Johan Nicolaï
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Antonio Bergamini
Malus domestica (Suckow) Borkh. · Apple
ALSTON FRANK H. DR.
Malus domestica (Suckow) Borkh. · Apple
Purdue Research Foundation (PRF)
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Roberto Gregori^^^Stefano Tartarini^^^Silviero Sansavini
Malus domestica (Suckow) Borkh. · Apple
Institute of Fruit Crops-Kyustendil
Malus domestica (Suckow) Borkh. · Apple
Roberto Gregori,Silviero Sansavini,Stefano Tartarini
Malus domestica (Suckow) Borkh. · Apple
Serge Collas
Malus domestica (Suckow) Borkh. · Apple