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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.

Ramos

Active

Solanum tuberosum L. · Potato

Van Rijn B.V.

BG CZ GR HR NL PL +2
25 records

Kuroda

Active

Solanum tuberosum L. · Potato

Mr G Kuik, Mr G Kuik

CZ ES FR HR HU NL +3
20 records

Inova

Active

Solanum tuberosum L. · Potato

Van Rijn BV (NL)

CZ FR GR NL PL SK +1
22 records

Opal

Active

Solanum tuberosum L. · Potato

Solana, D

CZ DE HR PL UA
22 records

Sassy

Active

Solanum tuberosum L. · Potato

GERMICOPA SAS

NL SK
21 records

Nicola

Active

Solanum tuberosum L. · Potato

SOLTAU| Raiffeisen Centralheide eG

AT CZ DE ES FI FR +4
17 records

Karlena

Active

Solanum tuberosum L. · Potato

Steinbach/Pfeffer

CZ DE HR HU IE LT +4
16 records

Divina

Active

Solanum tuberosum L. · Potato

VEREDELINGSBEDRIJF D. BIEMOND B.V.

BE CZ DE DK EE FR +4
20 records

Spunta

Active

Solanum tuberosum L. · Potato

U. OLDENBURGER (NL)

ES FR GR IE IT LU +2
21 records

Bellarosa

Active

Solanum tuberosum L. · Potato

Heinrich BOHM, DE

BG CZ HR HU PL PT +2
20 records

Almera

Active

Solanum tuberosum L. · Potato

Svalof Weibull AB

AT BG CZ HR NL PL +1
18 records

Hermes

Active

Solanum tuberosum L. · Potato

Saatbaugenossenschaft, A

AT ES IT LU NL PL +1
16 records

Symfonia

Active

Solanum tuberosum L. · Potato

WALSMA| A. Walsma

CZ DE ES HR IT NL
18 records

Manitou

Active

Solanum tuberosum L. · Potato

Thema S. Mansholt

HR NL PL PT UA
23 records

Gala

Active

Solanum tuberosum L. · Potato

Wolfgang Walter

BG DE LT LU UA
22 records

Arielle

Active

Solanum tuberosum L. · Potato

Cooeperatie Agrico U.A.

BG CZ EE FI HR LT +6
18 records

Gloria

Active

Solanum tuberosum L. · Potato

SOLTAU| Raiffeisen Centralheide eG

BE CZ DE FI FR IE +5
15 records

Romina

Active

Solanum tuberosum L. · Potato

NIEDERSTERREICHISCHE SAATBAUGENOSSENSCHT

AT DK EE ES FR HR +4
18 records

Fresco

Active

Solanum tuberosum L. · Potato

WOLF & WOLF B.V.

BE CZ DE EE FR HR +6
16 records

Oleva

Active

Solanum tuberosum L. · Potato

Landbrugets Kartoffelfond, Foraedlst., DK-7184 Vandel

DE DK EE ES FI FR +4
19 records

Aladin

Active

Solanum tuberosum L. · Potato

Wildeboer, J. J.

HR HU LT MT NL PL +3
17 records

Satina

Active

Solanum tuberosum L. · Potato

SOLANA DEUTSCHLAND GmbH

CZ DE HR HU LT PL +2
20 records

Cicero

Active

Solanum tuberosum L. · Potato

Mme R.M. Schouten (NL)/J.A. Crebas (NL)

CZ DE FR GR HU IT +3
21 records

Courage

Active

Solanum tuberosum L. · Potato

VAN DER LEEST B^^^NAUTA J.G.

CZ EE GR HR HU IT +3
16 records

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