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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.

Ally

Active

Solanum tuberosum L. · Potato

DANESPO A/S

DK
4 records

Amulet

Terminated

Solanum tuberosum L. · Potato

HZPC Holland B.V.

NL
4 records

Alix

Active

Solanum tuberosum L. · Potato

Germicopa SAS, FR

FR
4 records

Alena

Active

Solanum tuberosum L. · Potato

Norika Nordring-Kartoffelzucht-und Vermehrungs- GmbH Gros Lusewitz

LV
3 records

Akacja

Active

Solanum tuberosum L. · Potato

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

PL
4 records

Troll

Active

Solanum tuberosum L. · Potato

Landbruks- og matdepartementet, N - 0030 Oslo

2 records

Eir

Active

Solanum tuberosum L. · Potato

Graminor AS, N-2322 Ridabu

2 records

Brage

Terminated

Solanum tuberosum L. · Potato

Landbruks- og matdepartementet, N - 0030 Oslo

2 records

Amour

Active

Solanum tuberosum L. · Potato

SCOTTISH CROP RESEARCH INSTITUTE

2 records

Solanum tuberosum L. · Potato

Zelia Aureliia Heorhiivna, Halahan Tetiana Oleksandrivna, Kozun` Ihor Ivanovych, Tymko Liudmyla Volodymyrivna, Pysarenko Nataliia Vasylivna, Lysak Olena Andriivna, Andriienko Tetiana Mykhailivna, Tymko Mykola Hryhorovych, Sydorchuk Vasyl Ivanovych,

UA
2 records

Janka

Terminated

Solanum tuberosum L. · Potato

ES HR PL
3 records

Komtesa

Protection expired

Solanum tuberosum L. · Potato

CZ SK
6 records

Katka

Protection expired

Solanum tuberosum L. · Potato

CZ SK
4 records

Bellona

Terminated

Solanum tuberosum L. · Potato

FI SE
3 records

Sebago

Application submitted

Solanum tuberosum L. · Potato

NL
4 records

Vaneda

Protection expired

Solanum tuberosum L. · Potato

CZ
3 records

Maximum

Active

Solanum tuberosum L. · Potato

SE
3 records

Emina

Active

Solanum tuberosum L. · Potato

CZ
3 records

Val Red

Active

Solanum tuberosum L. · Potato

CZ
3 records

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