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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

Found in these crops

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.

Torva

Terminated

Solanum tuberosum L. · Potato

Landbrugets Kartoffelfond

DK
2 records

Torpeda

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL
8 records

Texas

Active

Solanum tuberosum L. · Potato

Kweek- en Researchbedrijf Agrico B.V.

NL
3 records

Tokai

Active

Solanum tuberosum L. · Potato

Danespo A/S

DK
4 records

Temerar

Active

Solanum tuberosum L. · Potato

BODEA DUMITRU

RO
3 records

Tacja

Active

Solanum tuberosum L. · Potato

Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR

PL
4 records

Tiina

Active

Solanum tuberosum L. · Potato

Aide Tsahkna 50%, Terje Tähtjärv 50%, Centre of Estonian Rural Research and Knowledge

EE
3 records

SW Superb

Terminated

Solanum tuberosum L. · Potato

Böös Ulla

SE
3 records

Sonda

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL
5 records

Solution

Active

Solanum tuberosum L. · Potato

Sloots Aardappelkweekbedrijf B.V.

NL
4 records

Solanum tuberosum L. · Potato

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

AT
3 records

Sempre

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL
3 records

Sixtus

Active

Solanum tuberosum L. · Potato

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

AT
3 records

Sarmis

Active

Solanum tuberosum L. · Potato

HERMEZIU RADU

RO
3 records

Salto

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL
6 records

Serpanok

Active

Solanum tuberosum L. · Potato

OSIPChUK ANDREJ ANTONOVICh / NAZAR STEFANIYa GRIGOR'EVNA / GRITSENKO EKATERINA PETROVNA / KUChKO ANATOLIJ ANDREEVICh / OSIPChUK ALLA ANDREEVNA / TIMOShENKO TAT'YaNA VASIL'EVNA / TARASENKO OLEG ALEKSANDROVICh / TAKTAEV BORIS ANATOL'EVICh / TARAShchENKO NAD

UA
3 records

Solanum tuberosum L. · Potato

Sloots Aardappelkweekbedrijf B.V.

NL
3 records

Solanum tuberosum L. · Potato

Selekta Pacov, a.s., CZ

CZ
3 records

Roseval

Active

Solanum tuberosum L. · Potato

Federation des Syndicats Bretons (FR)

FR
2 records

Rigonda

Active

Solanum tuberosum L. · Potato

APP Agroresursu un ekonomikas institūts

LV
3 records

Rosemara

Active

Solanum tuberosum L. · Potato

Aardappelkweekbedrijf J. Darwinkel V.O.F./Agricrop, Mr. John C. Mara

NL
3 records

Rima

Active

Solanum tuberosum L. · Potato

Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR

PL
3 records

Radunia

Active

Solanum tuberosum L. · Potato

Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie

PL
9 records

Prelma

Active

Solanum tuberosum L. · Potato

Gunta Bebre

LV
3 records

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