King David
ActiveMalus domestica (Suckow) Borkh. · Apple
University of Arkansas
Diseases
Apple Scab
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.
Varieties of Apple mentioned in the description
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.
Gala Surf
ActiveMalus domestica (Suckow) Borkh. · Apple
GFA BRISSET
Eden
ActiveMalus domestica (Suckow) Borkh. · Apple
Agriculture & Agri-Food Canada, Saint-Jean-sur-Richelieu
Belorusskij Sinap
ActiveMalus domestica (Suckow) Borkh. · Apple
RESPUBLIKANSKOE NAUCHNO-PROIZVODSTVENNOE DOCHERNEE UNITARNOE PREDPRITIE «INSTITUT PLODOVODSTVA»
Rudeninis dryžuotasis
ActiveMalus domestica (Suckow) Borkh. · Apple
Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
EE
LT
2 records
Rea Agata
ActiveMalus domestica (Suckow) Borkh. · Apple
Prof. Dr. Christa Fischer / Dr. Andreas Peil im Inst. f. ZF an gartenb. Kulturen und Obst -Julius-Kühn-Institut-
DE
UA
5 records
Mutsu NK
ActiveMalus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
NL
PL
2 records
Felicita
ActiveMalus domestica (Suckow) Borkh. · Apple
APP Darzkopibas instituts
CZ
LV
3 records
Gold Milenium
ActiveMalus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
PL
4 records
Zabergäu Renette
ActiveMalus domestica (Suckow) Borkh. · Apple
NL
3 records
XUANINA
ActiveMalus domestica (Suckow) Borkh. · Apple
SERIDA
ES
2 records
Witos
ActiveMalus domestica (Suckow) Borkh. · Apple
Szkola Glowna Gospodarstwa Wiejskiego
PL
4 records
X9596
ActiveMalus domestica (Suckow) Borkh. · Apple
Jean-Luc Carrieres
FR
3 records
Winter Banana
ActiveMalus domestica (Suckow) Borkh. · Apple
FR
5 records
Zane
ActiveMalus domestica (Suckow) Borkh. · Apple
R.Dumbravs, L.Ikase
LV
2 records
Virve
ActiveMalus domestica (Suckow) Borkh. · Apple
Kalju Kask 85%, Laila Ikase 15%
EE
3 records
Waleria
ActiveMalus domestica (Suckow) Borkh. · Apple
Szkola Glowna Gospodarstwa Wiejskiego
PL
4 records
Veiniõun
ActiveMalus domestica (Suckow) Borkh. · Apple
Uno Kivistik
EE
5 records
Uldis
ActiveMalus domestica (Suckow) Borkh. · Apple
R.Dumbravs, L.Ikase
LV
3 records
UEB 5586/1
Application submittedMalus domestica (Suckow) Borkh. · Apple
CZ
4 records
Triomphe de Kiel
ActiveMalus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
NL
2 records
Teremok
ActiveMalus domestica (Suckow) Borkh. · Apple
RUP «GRODNENSKIJ ZONALNYJ INSTITUT RASTENIEVODSTVA NAN BELARUSI»
UA
2 records
Tesnières
ActiveMalus domestica (Suckow) Borkh. · Apple
Domaine Public (FR)
FR
2 records
Tiina
ActiveMalus domestica (Suckow) Borkh. · Apple
Estonian University of Life Sciences Institute of Agricultural and Environmental Sciences Polli Horticultural Research Centre
EE
4 records