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
Pepinieres du Valois Sarl (FR)/Institut National de la Recherche Agronomique (FR)
Malus domestica (Suckow) Borkh. · Apple
Prof. Jaroslav Tupy c/o Institute of Experimental Botany
Malus domestica (Suckow) Borkh. · Apple
VNII SELEKCZII PLODOVYX KULTUR
Malus domestica (Suckow) Borkh. · Apple
Schniga GmbH, D
Malus domestica (Suckow) Borkh. · Apple
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Institut Français des Productions Cidricoles (I.F.P.C.)
Malus domestica (Suckow) Borkh. · Apple
Prof. Dr. Christa Fischer / Dr. Andreas Peil im Inst. f. ZF an gartenb. Kulturen und Obst -Julius-Kühn-Institut-
Malus domestica (Suckow) Borkh. · Apple
THE KENT INCORPORATED SOCIETY
Malus domestica (Suckow) Borkh. · Apple
TGL Field & Son (NZ)
Malus domestica (Suckow) Borkh. · Apple
TROFIMOVA TAISIYa ANDREEVNA / SEDOV EVGENIJ NIKOLAEVICh
Malus domestica (Suckow) Borkh. · Apple
SEDOV EVGENIJ NIKOLAEVICh / SEROVA ZOYa MIHAJLOVNA / ZhDANOV VLADILEN VASIL'EVICh
Malus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
Malus domestica (Suckow) Borkh. · Apple
PEPINIERES DU VALOIS SARL, FR
Malus domestica (Suckow) Borkh. · Apple
Regents of the University of Minnesota / Regents of the University of Minnesota / Regents of the University of Minnesota
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus domestica (Suckow) Borkh. · Apple
Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)
Malus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Malus domestica (Suckow) Borkh. · Apple
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
Simone Bühlmann-Schütz Agroscope
Malus domestica (Suckow) Borkh. · Apple
SEMPRA PRAHA A S
Malus domestica (Suckow) Borkh. · Apple
Magdolna Tóth^^^Szilvia Kovács
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
R.D. & P.J. Mitchell
Malus domestica (Suckow) Borkh. · Apple