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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.

Chenoa

Active

Solanum tuberosum L. · Potato

Interseed Potatoes GmbH

DE
7 records

Cascada

Active

Solanum tuberosum L. · Potato

Wolfgang Walter

DE
6 records

Buffalo

Active

Solanum tuberosum L. · Potato

Teagasc Crops Research Centre

IE
7 records

Almonda

Active

Solanum tuberosum L. · Potato

SOLANA GMBH & CO KG

NL
7 records

Vebesta

Active

Solanum tuberosum L. · Potato

V.B.B. FONDS

DE DK NL
4 records

Igor

Terminated

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

HR PL SI
6 records

Kalina

Terminated

Solanum tuberosum L. · Potato

Lidiya Dimitrova, Georgi Avdzhiyski

BG PL SK
4 records

Fecuva

Protection expired

Solanum tuberosum L. · Potato

VANDEL POTATOES I/S

DE DK FR
6 records

Hela

Protection expired

Solanum tuberosum L. · Potato

VEREINIGTE SAATZUCHTEN EBSTORF-ROSCHE

DE FR NL
4 records

Belita

Active

Solanum tuberosum L. · Potato

ENTING| L. E. Enting

AT DE NL
5 records

Zuzanna

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

PL UA
7 records

Westamyl

Active

Solanum tuberosum L. · Potato

Vesa Velhartice a.s., CZ

AT CZ
6 records

Suzan

Active

Solanum tuberosum L. · Potato

Vesa Velhartice a.s.

CZ UA
6 records

Tajfun

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL UA
10 records

Solanum tuberosum L. · Potato

Piet H.Smeenge

NL UA
6 records

Rosetta

Terminated

Solanum tuberosum L. · Potato

SAKA-RAGIS PFLANZENZUCHT GBR

HR IT
5 records

Red Baron

Application submitted

Solanum tuberosum L. · Potato

Cooeperatie Agrico U.A.

NL SI
6 records

Liva

Terminated

Solanum tuberosum L. · Potato

Landbrugets Kartoffelfond, Foraedlst., DK-7184 Vandel

DK SK
5 records

Marabou

Active

Solanum tuberosum L. · Potato

Wolfgang Walter

DE UA
6 records

Lasunak

Active

Solanum tuberosum L. · Potato

RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»

LT LV
4 records

Solanum tuberosum L. · Potato

STET HOLLAND

NL UA
8 records

Justbake

Active

Solanum tuberosum L. · Potato

Vandel Potatoes I/S c/o Danespo A/S

DK NL
6 records

Gunda

Active

Solanum tuberosum L. · Potato

VOGEL JOSEF| Dr. Josef Vogel

DE SK
7 records

Fritelle

Active

Solanum tuberosum L. · Potato

Station de Recherche du ComitÚ Nord

FR NL
6 records

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