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
STICHTING WAGENINGEN RESEARCH-WAGENINGEN PLANT RESEARCH
Malus domestica (Suckow) Borkh. · Apple
Wilton Weert B.V. (NL)
Malus domestica (Suckow) Borkh. · Apple
Ústav experimentální botaniky AV ČR, v.v.i. (CZ)
Malus domestica (Suckow) Borkh. · Apple
Sortenschutz Hofmann GmbH (DE)
Malus domestica (Suckow) Borkh. · Apple
Smith, T., Smith, M. A.
Malus domestica (Suckow) Borkh. · Apple
Vivaisti, I
Malus domestica (Suckow) Borkh. · Apple
Sundermeyer Gerhard
Malus domestica (Suckow) Borkh. · Apple
Purdue Research Foundation, USA
Malus domestica (Suckow) Borkh. · Apple
New Jersey Agri Exp Stat (US)
Malus domestica (Suckow) Borkh. · Apple
Red Moon, I
Malus domestica (Suckow) Borkh. · Apple
Red Moon, I
Malus domestica (Suckow) Borkh. · Apple
Zeppa Aldo|Brisbane, AU
Malus domestica (Suckow) Borkh. · Apple
Wageningen Plant Research, NL
Malus domestica (Suckow) Borkh. · Apple
Purdue Research Foundation (US)
Malus domestica (Suckow) Borkh. · Apple
INCONNU (FR)
Malus domestica (Suckow) Borkh. · Apple
Station de Recherche York (US)
Malus domestica (Suckow) Borkh. · Apple
Plants for Europe Ltd
Malus domestica (Suckow) Borkh. · Apple
Lane W. David|Summerland, CA
Malus domestica (Suckow) Borkh. · Apple
Yokhan Nikolai
Malus domestica (Suckow) Borkh. · Apple
Telisa Grille
Malus domestica (Suckow) Borkh. · Apple
Veleminsky, Jiri
Malus domestica (Suckow) Borkh. · Apple
YVES LESPINASSE
Malus domestica (Suckow) Borkh. · Apple
White Allan
Malus domestica (Suckow) Borkh. · Apple
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