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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

Potato Wart 688

Found in these crops

Potato 825

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.

Rikea

Active

Solanum tuberosum L. · Potato

Wolf Lange (DE)

BE BG CZ DE DK EE +3
13 records

Fambo

Active

Solanum tuberosum L. · Potato

Meijer C. BV (NL)

AT CZ ES FI FR IT +2
16 records

Bartina

Active

Solanum tuberosum L. · Potato

P.I.J. VAN DER WERFF & COOP. DE Z.P.C.

DK ES FR HR IE IT +2
14 records

Romano

Active

Solanum tuberosum L. · Potato

Veredelingsbedrijf B.V.

HR HU IE NL SI UA
15 records

Regina

Active

Solanum tuberosum L. · Potato

SAKA RAGIS PFLANZENZUCHT (DE)

CZ DE ES FR NL SK
18 records

Diamant

Active

Solanum tuberosum L. · Potato

F.BRANDS

BE DE ES FR LU MT +1
19 records

Red fantasy

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

DE HR UA
17 records

Rosanna

Active

Solanum tuberosum L. · Potato

U. OLDENBURGER (NL)

FR PT SK
17 records

Caruso

Active

Solanum tuberosum L. · Potato

Saka Pflanzenzucht, D

DE HR UA
16 records

Royal

Active

Solanum tuberosum L. · Potato

LKF-Vandel

DK NL
16 records

Lady Anna

Active

Solanum tuberosum L. · Potato

Mr. J.P.M. Muijsers

NL UA
18 records

Belmonda

Active

Solanum tuberosum L. · Potato

Solana, D

DE UA
17 records

Arsenal

Active

Solanum tuberosum L. · Potato

Sjefke Allefs

NL UA
20 records

Ponto

Protection expired

Solanum tuberosum L. · Potato

Kartoffelzucht Böhm Inh. Gebrüder Böhm K.G.

AT DE DK ES FR IT +4
14 records

Kuras

Active

Solanum tuberosum L. · Potato

Mr. G. Kuper

AT CZ DE DK FR NL +3
17 records

Colette

Active

Solanum tuberosum L. · Potato

SCHUCHMANN| Dr. Walter Schuchmann / BOEHM GEORG| Georg Boehm

BG CZ DE EE HR LT +3
16 records

Vitesse

Active

Solanum tuberosum L. · Potato

VAN DER VIIN SAAP

BG CZ DE HR HU SI +1
14 records

Romanze

Active

Solanum tuberosum L. · Potato

Wolfgang Walter

DE ES HR LT UA
14 records

Virginia

Active

Solanum tuberosum L. · Potato

R.J. Mansholt

DE FR IT UA
13 records

Roko

Active

Solanum tuberosum L. · Potato

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

AT HR HU PL
15 records

Omega

Active

Solanum tuberosum L. · Potato

HETTEMA ZONEN B.V

DE IE UA
17 records

Musica

Active

Solanum tuberosum L. · Potato

J.P.M.Muijsers

HR NL UA
17 records

Lilly

Active

Solanum tuberosum L. · Potato

SOLANA GMBH & CO KG

CZ DE UA
14 records

Labella

Active

Solanum tuberosum L. · Potato

Jacob Eising

HR NL UA
20 records

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