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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.

Shampion

Active

Malus domestica (Suckow) Borkh. · Apple

RUP «BRESTSKAYA OBLASTNAYA SELSKOXOZYAJSTVENNAYA OPYTNAYA STANCZIYA NAN BELARUSI»

3 records

Rustica

Active

Malus domestica (Suckow) Borkh. · Apple

Markus Kellerhals Agroscope

2 records

Rusticana

Active

Malus domestica (Suckow) Borkh. · Apple

Markus Kellerhals

3 records

Red Spur

Active

Malus domestica (Suckow) Borkh. · Apple

3 records

Primiera

Active

Malus domestica (Suckow) Borkh. · Apple

Silviero Sansavini^^^JANICK JULES

3 records

Orlovskij Pioner

Active

Malus domestica (Suckow) Borkh. · Apple

SEDOV EVGENIJ NIKOLAEVICh / SEROVA ZOYa MIHAJLOVNA / ZhDANOV VLADILEN VASIL'EVICh / HABAROV YuRIJ IVANOVICh

2 records

MD02UNIBO

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Roberto Gregori,Silviero Sansavini,Stefano Tartarini

2 records

LB17906

Active

Malus domestica (Suckow) Borkh. · Apple

Walter Guerra

3 records

Linda

Active

Malus domestica (Suckow) Borkh. · Apple

UL'YaNOVSKAYa ELENA VLADIMIROVNA / MOZhAR NINA VASIL'EVNA / BOGATYREVA SVETLANA VIKTOROVNA / MAHNO LYuBOV' VASIL'EVNA / NOVIKOVA LARISA ANATOL'EVNA / PRIChKO TAT'YaNA GRIGOR'EVNA / ChEHLAN' PAVEL IVANOVICh / MIRONOV ALEKSEJ PAVLOVICh / BUDNIKOVA ELENA NIK

3 records

Jm1

Application submitted

Malus domestica (Suckow) Borkh. · Apple

YOSHIO YOSHIDA^^^SHICHIRO TSUCHIYA^^^Jun-ichi Soejima

3 records

Gradictive

Active

Malus domestica (Suckow) Borkh. · Apple

Gradilis Recherche SARL

3 records

Galamic

Active

Malus domestica (Suckow) Borkh. · Apple

Jürgen Braun

3 records

Gradiana

Active

Malus domestica (Suckow) Borkh. · Apple

Gradilis Recherche SARL

3 records

FPMPAX

Active

Malus domestica (Suckow) Borkh. · Apple

St. Cecilia's Abbey

3 records

Frida

Active

Malus domestica (Suckow) Borkh. · Apple

Hilde Nybom

3 records

Catarina

Active

Malus domestica (Suckow) Borkh. · Apple

Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina S.A. (EPAGRI)

3 records

Beniminori

Application submitted

Malus domestica (Suckow) Borkh. · Apple

National Agriculture and Food Research Organization (NARO)

3 records

CIVM65

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Michelangelo Leis^^^Alessio Martinelli

2 records

CIVM35

Application submitted

Malus domestica (Suckow) Borkh. · Apple

Michelangelo Leis^^^Alessio Martinelli

2 records

Avgusta

Active

Malus domestica (Suckow) Borkh. · Apple

SEDOV EVGENIJ NIKOLAEVICh / SEROVA ZOYa MIHAJLOVNA / DOLMATOV EVGENIJ ALEKSEEVICh / SEDYShEVA GALINA ALEKSEEVNA

3 records

Afrodita

Active

Malus domestica (Suckow) Borkh. · Apple

SEDOV EVGENIJ NIKOLAEVICh / SEROVA ZOYa MIHAJLOVNA / ZhDANOV VLADILEN VASIL'EVICh / DOLMATOV EVGENIJ ALEKSEEVICh

3 records

AE'LITA

Active

Malus domestica (Suckow) Borkh. · Apple

2 records

Zitronenapfel

Active

Malus domestica (Suckow) Borkh. · Apple

NL SI
8 records

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