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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.

Caesar

Active

Solanum tuberosum L. · Potato

KWEEKBEDRIJF ROPTA ZPC

BG DE DK ES FR IE +2
17 records

Vivaldi

Active

Solanum tuberosum L. · Potato

van der Zee, G. / van der Zee, Pieter

CZ FR HR IT LT NL +1
21 records

Madeleine

Active

Solanum tuberosum L. · Potato

R.J. Mansholt's Veredelingsbedrijf

BG HR MT NL PL UA
19 records

Miranda

Active

Solanum tuberosum L. · Potato

SOLANA DEUTSCHLAND GmbH

CZ DK IT SI UA
20 records

Melody

Active

Solanum tuberosum L. · Potato

J.P.M.Muijsers

BG NL PL SI
20 records

Bafana

Active

Solanum tuberosum L. · Potato

VAN RIJN-KWS B.V.

NL PL UA
19 records

Donata

Active

Solanum tuberosum L. · Potato

Justus Bohm

NL UA
19 records

Obelix

Protection expired

Solanum tuberosum L. · Potato

WESTMAAS| Arie Westmaas

BE DE DK ES FR IE +3
17 records

Accent

Active

Solanum tuberosum L. · Potato

S.HARTMANS/C.MEIJER BV

AT CZ DE ES FR NL +4
18 records

Marfona

Active

Solanum tuberosum L. · Potato

P.G. KONSTZWAANSHOGK (AGRICO)

ES FR GR HR IE LU +2
18 records

Provento

Active

Solanum tuberosum L. · Potato

WOLF&WOLF

BG CZ ES FR HR NL +2
19 records

Kondor

Active

Solanum tuberosum L. · Potato

ROSEFIELD FARM

BG ES HR HU IE LU +2
19 records

Red Lady

Active

Solanum tuberosum L. · Potato

Solana Agrar Proukte GmBH & Co.

CZ GR HR LT UA
16 records

Sound

Active

Solanum tuberosum L. · Potato

Meijer C. BV (NL)

FR NL UA
18 records

Laperla

Active

Solanum tuberosum L. · Potato

Jacob Eising

HR NL UA
18 records

Lanorma

Active

Solanum tuberosum L. · Potato

Tjerk Krijthe

FR NL UA
19 records

Ranomi

Active

Solanum tuberosum L. · Potato

MARIEN WINTERS

NL UA
17 records

Ludmilla

Active

Solanum tuberosum L. · Potato

SAKA PFLANZENZUCHT GMBH AND CO KG

DE UA
22 records

Madison

Active

Solanum tuberosum L. · Potato

R. L. J. MANSHOLT

NL UA
19 records

Lady Jane

Active

Solanum tuberosum L. · Potato

GUUS HESELMANS

NL UA
19 records

Coronada

Active

Solanum tuberosum L. · Potato

Heinrich Böhm

NL UA
18 records

Canberra

Active

Solanum tuberosum L. · Potato

REITSMA BARTEL / JANSEN KLOMP MARTIN F.W.

HR NL
18 records

Alouette

Active

Solanum tuberosum L. · Potato

Mr. J.J.H.M. Allefs

NL UA
18 records

Navigator

Active

Solanum tuberosum L. · Potato

IPR B.V.

NL
19 records

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