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
Tupy Jaroslav
Malus domestica (Suckow) Borkh. · Apple
International Plant Management, Inc (US)
Malus domestica (Suckow) Borkh. · Apple
Tupy Jaroslav|Praha 6, CS / Louda Otto|Pencin u Liberce, CS / Zima Jan|Turnov, CS
Malus domestica (Suckow) Borkh. · Apple
Markus Kellerhals Agroscope
Malus domestica (Suckow) Borkh. · Apple
IFO SARL (FR)
Malus domestica (Suckow) Borkh. · Apple
THIERRY CLOS
Malus domestica (Suckow) Borkh. · Apple
ARC INFRUTEC NIETVOORBIJ
Malus domestica (Suckow) Borkh. · Apple
Takao Takano
Malus domestica (Suckow) Borkh. · Apple
MCKENZIE JOY^^^Allan G. White
Malus domestica (Suckow) Borkh. · Apple
V.O.F. Gebr. Van Beuningen, Netherlands
Malus domestica (Suckow) Borkh. · Apple
Leis Michelangelo Martinelli Alessio Tagliani Francesco Castagnoli Gianfranco, C.I.V. Consorzio Italiano Vivaisti-Societa Consortile a R.L.
Malus domestica (Suckow) Borkh. · Apple
TELLIER| Jean Tellier
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
VECHER WILLIAM (US)
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
VANDEPOEL-BEETEN
Malus domestica (Suckow) Borkh. · Apple
N.V.Jo Nicolai en Cie
Malus domestica (Suckow) Borkh. · Apple
Uniwersytet Przyrodniczy w Poznaniu
Malus domestica (Suckow) Borkh. · Apple
Pepinieres et Roseraies Georges Delbard| FR
Malus domestica (Suckow) Borkh. · Apple
Malus domestica (Suckow) Borkh. · Apple
Pepinieres et Roseraies Georges Delbard| FR
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Manfred Fischer / Heinz Murawski + im Institut für Obstforschung Dresden-Pillnitz / Prof. Dr. Christa Fischer