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agronom.cc cultivar database

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.

Sources8

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.

Cactus

Active

Malus domestica (Suckow) Borkh. · Apple

CZ
8 records

Zuzi Gala

Active

Malus domestica (Suckow) Borkh. · Apple

Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy

NL PL
7 records

Romagold

Active

Malus domestica (Suckow) Borkh. · Apple

SURKIJN Romain (BE)/Pepinieres Rene Nicolai SA (BE)

FR NL
7 records

Resista

Active

Malus domestica (Suckow) Borkh. · Apple

SEMPRA PRAHA A S

CZ DE
7 records

Nela

Active

Malus domestica (Suckow) Borkh. · Apple

Prof. Jaroslav Tupy c/o Institute of Experimental Botany

CZ DE
5 records

Mc. Intosh

Active

Malus domestica (Suckow) Borkh. · Apple

ES NL
7 records

Locard vert

Active

Malus domestica (Suckow) Borkh. · Apple

Domaine Public (FR)

FR UA
3 records

Hana

Active

Malus domestica (Suckow) Borkh. · Apple

Ústav experimentální botaniky AV ČR, v.v.i. (CZ)

CZ DE
9 records

Elstar Reinhardt

Active

Malus domestica (Suckow) Borkh. · Apple

REINHARDT| G. Reinhardt / SCHMITZ-HUeBSCH| G. Schmitz-Huebsch

DE FR
6 records

Dalinco

Active

Malus domestica (Suckow) Borkh. · Apple

SNC Elaris (FR)/Institut National de la Recherche Agronomique (FR)

FR NL
6 records

Arlet

Active

Malus domestica (Suckow) Borkh. · Apple

Station de Recherche de Wadenswil (CH)

FR NL
7 records

Ametyst

Active

Malus domestica (Suckow) Borkh. · Apple

Ústav experimentální botaniky AV ČR, v.v.i. (CZ)

CZ NL
12 records

Ahra

Active

Malus domestica (Suckow) Borkh. · Apple

Prof. Dr. Hanna Schmidt / Dr. Jutta Krüger in Bundesforschungsanstalt für gartenbauliche Pflanzenzüchtung

DE NL
5 records

Angold

Active

Malus domestica (Suckow) Borkh. · Apple

SEMPRA PRAHA A S

CZ DE
12 records

Starapple1

Active

Malus domestica (Suckow) Borkh. · Apple

Stargrow Cultivar Development (ZA)

FR
4 records

SJCA38R6A74

Active

Malus domestica (Suckow) Borkh. · Apple

Shahrokh Khanizadeh

3 records

X9589

Active

Malus domestica (Suckow) Borkh. · Apple

Jean-Luc Carrieres

FR
5 records

Verline

Active

Malus domestica (Suckow) Borkh. · Apple

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

FR
5 records

Treladine

Active

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)

FR
5 records

UEB 481

Active

Malus domestica (Suckow) Borkh. · Apple

Institute of Experimental Botany AS CR v.v.i.

CZ
4 records

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