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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.

Désirée

Active

Solanum tuberosum L. · Potato

ZPC

AT CZ DE ES FR HR +6
26 records

Carrera

Active

Solanum tuberosum L. · Potato

RIAN STEKELENBURG / F. BORN_ / MARTIN F. W. JANSEN KLOMP

CZ EE FR HR IT NL +3
26 records

Jelly

Active

Solanum tuberosum L. · Potato

Kartoffelzucht Böhm, Inh. Gebr. Böhm Kg.

BG CZ DE HR LU PL +2
29 records

Folva

Active

Solanum tuberosum L. · Potato

Lars Bach

AT BG CZ DE DK EE +8
25 records

Mozart

Active

Solanum tuberosum L. · Potato

RIAN STEKELENBURG / MARTIN F. W. JANSEN KLOMP / W. SANDERS / B. BORKHUIS

CZ HR IT NL PL SK +1
26 records

Chérie

Active

Solanum tuberosum L. · Potato

GERMIMCOPA BREEDING (GERMICOPA SAS)

DE FR HU PL SK UA
28 records

Sifra

Active

Solanum tuberosum L. · Potato

Rocus Pieter Graveland, Cornelus Johannus Biemond.

HR IT MT NL UA
25 records

Challenger

Active

Solanum tuberosum L. · Potato

ROCUS PIETER GRAVELAND

NL UA
29 records

Ukama

Active

Solanum tuberosum L. · Potato

Trip, J.

AT BE CZ DE DK ES +9
23 records

Saturna

Active

Solanum tuberosum L. · Potato

STADER| Stader Saatzucht eG

AT CZ DE EE FI FR +7
21 records

Laura

Active

Solanum tuberosum L. · Potato

Richard Schuchmann^^^Heinrich Böhm

BG CZ DE HR HU LT +4
25 records

Carlita

Active

Solanum tuberosum L. · Potato

JA Crebas (NL)

BE BG DE DK EE FR +6
20 records

Arizona

Active

Solanum tuberosum L. · Potato

Sjefke Allefs

MT NL UA
27 records

Picasso

Active

Solanum tuberosum L. · Potato

KWEEEKBEDRYJF ROPTA-ZPC

BG DK EE ES FR IE +5
22 records

Jaerla

Active

Solanum tuberosum L. · Potato

ZPC Portugal

AT DE DK ES FR GR +7
22 records

Rosara

Active

Solanum tuberosum L. · Potato

VON KAMEKE KARTZ

CZ DE ES HR HU LT +5
24 records

Red Scarlett

Active

Solanum tuberosum L. · Potato

Y.P. van der Werff/ZPC

CZ EE HR HU IT LT +4
20 records

Lady christl

Active

Solanum tuberosum L. · Potato

MUIJSERS| J. Muijsers c/o C. Meijer B.V.

CZ DE FI FR NL PL +2
24 records

Sagitta

Active

Solanum tuberosum L. · Potato

ROCUS PIETER GRAVELAND

CZ IT NL PL UA
27 records

Verdi

Active

Solanum tuberosum L. · Potato

UNIPLANTA SAATZUCHT KG

CZ DE PL UA
24 records

Flamenco

Active

Solanum tuberosum L. · Potato

ZPC

ES FR NL UA
27 records

Nikita

Application submitted

Solanum tuberosum L. · Potato

WOLF&WOLF

CZ DE DK ES FR HR +6
23 records

Vineta

Active

Solanum tuberosum L. · Potato

Yorh Ehhers

BG CZ DE EE HR HU +5
21 records

Redstar

Protection expired

Solanum tuberosum L. · Potato

ZPC Portugal

CZ FI HR IT LV NL +3
22 records

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