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Diseases

Potato wart

Synchytrium endobioticum

A quarantine disease of potatoes caused by a soil-borne parasitic fungus, manifested by the formation of growths on tubers and plant organs. The disease leads to significant yield losses and requires the use of exclusively wart-resistant varieties to clear the soil.

Mentioned in descriptions 2 298 varieties reference book.

Potato wart manifests as fleshy growths on tubers and stolons, which resemble cauliflower inflorescences in appearance. Initially, they are light in color, but as they develop, they darken, rot, and turn into a foul-smelling slimy mass. On stems, leaves, and flowers, the pathogen causes the appearance of green growths; atypical forms of damage, such as leaf crinkling or nodular deformations, are also encountered.

The development of the disease is closely related to soil moisture and temperature, with high humidity (60–80%) and temperatures of +15…+18°C being the most favorable conditions. The pathogen infects potatoes best in light and acidic soils, and the risk of infection increases critically with prolonged continuous cultivation of the crop on the same plot. The parasite's resting spores remain viable in the soil for up to 30 years.

The resistance of potato varieties to potato wart is based on a hypersensitivity mechanism, in which plant cells at the site of zoospore penetration die immediately, isolating the infection site and preventing further development of the fungus. Assessment of resistance is a mandatory stage of state variety testing. Cultivating resistant varieties in the infested zone contributes to the gradual clearing of the soil from infection, as the absence of a susceptible host interrupts the parasite's development cycle.

Sources10

Breakdown by crop

Found in these crops

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Django

Active

Solanum tuberosum L. · Potato

Bavaria Saat GbR

DE
4 records

Darling

Active

Solanum tuberosum L. · Potato

Danespo A/S

DK
4 records

Columbia

Active

Solanum tuberosum L. · Potato

Europlant Innovation GmbH & Co. KG

DE
5 records

David

Active

Solanum tuberosum L. · Potato

Vesa Velhartice a.s.

CZ
5 records

Chipie

Terminated

Solanum tuberosum L. · Potato

Station de Recherche du Comité Nord G.I.E.

FR
4 records

Capucine

Active

Solanum tuberosum L. · Potato

Germicopa SAS, FR

FR
6 records

Candella

Active

Solanum tuberosum L. · Potato

Saka Pflanzenzucht GmbH Co KG

DE
4 records

Solanum tuberosum L. · Potato

SARPO KFT

IE
3 records

Bavatop

Active

Solanum tuberosum L. · Potato

Bavaria Saat GbR

DE
5 records

Bmc

Active

Solanum tuberosum L. · Potato

Mencke Landbouw B.V.

NL
5 records

Avamond

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Axion

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Bastion

Terminated

Solanum tuberosum L. · Potato

P.Y. OD WERFF

NL
6 records

Aromata

Active

Solanum tuberosum L. · Potato

STET HOLLAND

NL
6 records

Aventra

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Avarna

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Ascott

Active

Solanum tuberosum L. · Potato

Danespo A/S

DK
4 records

Altus

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Amyla

Active

Solanum tuberosum L. · Potato

Germicopa SA (FR)

FR
4 records

Ampera

Terminated

Solanum tuberosum L. · Potato

Friedrich Fedhofer

DE
5 records

Amaez

Active

Solanum tuberosum L. · Potato

Kweek- en Researchbedrijf Agrico B.V.

NL
5 records

Adelinde

Active

Solanum tuberosum L. · Potato

Averis Seeds B.V.

NL
5 records

Solanum tuberosum L. · Potato

Justus Böhm

DE
5 records

Solanum tuberosum L. · Potato

TUBEROSUM TECHNOLOGIES INC

3 records

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