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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.

Sieglinde

Active

Solanum tuberosum L. · Potato

Stacja Hodowli Roślin Stawiski

AT DE FI FR IT NL +1
8 records

Columbo

Terminated

Solanum tuberosum L. · Potato

LENNART ERJEFÄLT^^^BÖÖS ULLA

EE FI LT LV PL SE
11 records

Corine

Active

Solanum tuberosum L. · Potato

WOLF & WOLF B.V.

BE DE FR IE LU NL
10 records

Molli

Active

Solanum tuberosum L. · Potato

VOGEL JOSEF| Dr. Josef Vogel

CZ DE LV PL UA
13 records

Finka

Active

Solanum tuberosum L. · Potato

Kartoffelzucht Böhm GmbH & Co. KG (DE)

BG CZ DE SK UA
13 records

Delikat

Active

Solanum tuberosum L. · Potato

Yosef Fohel`

CZ DE LV PL UA
13 records

Arran Banner

Active

Solanum tuberosum L. · Potato

KELVIE (IE)

ES FR IE MT NL
9 records

Turbo

Active

Solanum tuberosum L. · Potato

SMEENGE| Piet Smeenge / SMEENGE ALBERT| Albert Smeenge

DE ES FR NL
8 records

Navan

Active

Solanum tuberosum L. · Potato

PBI Cambridge (GB)

CZ HU IE SI
12 records

Piccolo star

Active

Solanum tuberosum L. · Potato

VAN RIJN-KWS B.V.

NL UA
13 records

Mont Blanc

Active

Solanum tuberosum L. · Potato

Jan van Loon

BE LU NL
11 records

Capri

Active

Solanum tuberosum L. · Potato

PRINCE (NL)

CZ DE FR
9 records

Actrice

Active

Solanum tuberosum L. · Potato

Jan Darwinkel

MT NL UA
12 records

Spectra

Active

Solanum tuberosum L. · Potato

Lantmõnnen Seed B.V.

NL UA
12 records

Panther

Active

Solanum tuberosum L. · Potato

R.P.GRAVELAND

FR NL
12 records

Merlot

Active

Solanum tuberosum L. · Potato

Wolfgang Walter, Norika Nordring - Kartoffelzucht - und Vermehrungs - GmbH Gross Lusewitz

LV UA
11 records

Nandina

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

NL UA
12 records

Jurata

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

LU PL
11 records

Destiny

Active

Solanum tuberosum L. · Potato

Suelmann, Cornelus / Suelmann, Johannes Josephus

MT NL
11 records

Damaris

Active

Solanum tuberosum L. · Potato

Winfried Lange, Frank Lange

DE UA
12 records

Captiva

Active

Solanum tuberosum L. · Potato

Heinrich BOHM, DE

NL UA
12 records

Avalanche

Active

Solanum tuberosum L. · Potato

John Mara

DK IE
11 records

Amandine

Active

Solanum tuberosum L. · Potato

UNICOPA (FR)/Clause Semences SA (FR)

BG FR
10 records

Vogue

Active

Solanum tuberosum L. · Potato

NIEUW-VENNEP

NL
12 records

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