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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.

Figaro

Active

Solanum tuberosum L. · Potato

Solana, D

DE
10 records

Corolle

Active

Solanum tuberosum L. · Potato

HANS JURGEN EVERS (T)

FR
8 records

Axenia

Active

Solanum tuberosum L. · Potato

Winfried Lange, Frank Lange

DE
9 records

Tempora

Protection expired

Solanum tuberosum L. · Potato

Nordkartoffel Zuchtgesellschaft mbH

CZ DE NL SK
6 records

Olympia

Active

Solanum tuberosum L. · Potato

VON KAMEKE (DE)

CZ DE FR NL
7 records

Krometa

Active

Solanum tuberosum L. · Potato

S. KROEZE (NL)

DE DK FR NL
7 records

Donella

Terminated

Solanum tuberosum L. · Potato

Saka Pflanzenzucht GmbH Co KG

CZ DE PL SK
7 records

Solanum tuberosum L. · Potato

Kartoffelzucht Böhm Ing. Gebrüder Böhm K.G.

AT DE FR SK
5 records

Wotan

Active

Solanum tuberosum L. · Potato

Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.

AT DK FR
7 records

Vindika

Active

Solanum tuberosum L. · Potato

VERENIGDE KWEEKBEDRIJVEN (NL)

DE FR IE
10 records

Rubis

Active

Solanum tuberosum L. · Potato

Federation des Syndicats Bretons (FR)

ES FR PT
7 records

Seresta

Active

Solanum tuberosum L. · Potato

SLOOTS| R.H. Sloots

DE FI NL
7 records

Rosalie

Active

Solanum tuberosum L. · Potato

Potato Seed Solutions

ES FR NL
6 records

Safrane

Active

Solanum tuberosum L. · Potato

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

BG ES FR
8 records

Oceania

Application submitted

Solanum tuberosum L. · Potato

Joseph le Berre

FR IT UA
7 records

Magda

Active

Solanum tuberosum L. · Potato

SAATZUCHT FRITZ LANGE KG, DE

CZ LV SK
7 records

Solanum tuberosum L. · Potato

MEIJER| C. Meijer B.V.

DE FI IT
6 records

Kuba

Active

Solanum tuberosum L. · Potato

Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy

DE PL UA
10 records

Evita

Active

Solanum tuberosum L. · Potato

Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.

AT CZ EE
11 records

Fabiola

Active

Solanum tuberosum L. · Potato

Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.

AT HR NL
6 records

Alexia

Active

Solanum tuberosum L. · Potato

BOERHAVE VOF

FR MT NL
8 records

Baccara

Active

Solanum tuberosum L. · Potato

NORDKARTOFFEL| Nordkartoffel Zuchtgesellschaft mbH

CZ DE SK
7 records

Alice

Active

Solanum tuberosum L. · Potato

Vesa Velhartice a.s.

BE CZ NL
6 records

Taormina

Active

Solanum tuberosum L. · Potato

Europlant Innovation GmbH & Co. KG

DE UA
7 records

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