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agronom.cc cultivar database

Diseases

Apple Scab

Malus Mill.

A fungal disease of apple trees caused by the ascomycete fungus Venturia inaequalis. It affects all aerial organs of the plant, causing necrosis, fruit deformation, and premature defoliation.

In the reference 238 varieties crop Apple, where this is mentioned in the description.

The causative agent is the fungus Venturia inaequalis, which is highly specialized to apple trees. The pathogen infects leaves, fruits, sepals, pedicels, and young shoots. On leaves, the disease manifests as olive-black velvety spots, and on fruits, as suberized areas that lead to cracking and deformation.

The high genetic variability of the pathogen allows it to overcome the monogenic resistance of cultivars. In modern breeding, Rvi resistance genes, including Rvi6 (formerly known as Vf), are used to combat the disease. Pyramiding several resistance genes into a single genotype is recognized as an effective strategy to ensure long-term protection of the crop.

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.

Freedom

Active

Malus Mill. · Apple

ALDWINCKLE HERB S. / LAMB ROBERT C.

IT
1 record

Gorana

Active

Malus Mill. · Apple

Atanas Blagov

BG
2 records

Delorgue

Active

Malus Mill. · Apple

DELBARD GEORGES

IT
1 record

Martinika

Active

Malus Mill. · Apple

Atanas Blagov

BG
2 records

MICH 62396

Active

Malus Mill. · Apple

Mitchurinsk State Agrarian University (RU)

FR
1 record

Fuji Brak

Terminated

Malus Mill. · Apple

Alois Braun

AT
1 record

P 22/J

Terminated

Malus Mill. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
1 record

RØD AROMA

Terminated

Malus Mill. · Apple

SVERIGES LANTBRUKSUNIVERSITÄTET

DK
1 record

Besapara

Active

Malus Mill. · Apple

Atanas Blagov

BG
2 records

P 65

Terminated

Malus Mill. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
1 record

Oksana

Terminated

Malus Mill. · Apple

Mezhenska Liudmyla Oleksiivna, Mezhenskyi Volodymyr Mykolaiovych,

UA
2 records

REGINE

Terminated

Malus Mill. · Apple

Fischer, C. / Murawski, H.

HU
1 record

Dalivair

Active

Malus Mill. · Apple

LIGONNIERE GUY

IT
1 record

P 2

Terminated

Malus Mill. · Apple

Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka

PL
1 record

Marlena

Active

Malus Mill. · Apple

Atanas Blagov

BG
2 records

Elstar Reinhardt

Withdrawn

Malus Mill. · Apple

REINHARDT G. / SCHMITZ-HUBSCH G.

IT
1 record

Studnicne

Terminated

Malus Mill. · Apple

SK
1 record

Rosseau

Active

Malus Mill. · Apple

1 record

Zvonkové

Terminated

Malus Mill. · Apple

SK
1 record