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Diseases

Rhizoctonia Canker and Black Scurf of Potato

Solanum tuberosum L.

A fungal disease of potatoes caused by the soil-borne pathogen Rhizoctonia solani, affecting all plant organs at various developmental stages. It manifests as the formation of black sclerotia on tubers, cankers on sprouts and stems, as well as leaf curling and tuber malformation.

In the reference 182 varieties crop Potato, where this is mentioned in the description.

The disease is caused by the basidiomycete Rhizoctonia solani (anamorphic stage) or Thanatephorus cucumeris (telemorphic stage). The pathogen infects sprouts, causing them to die before or after emergence, which leads to poor stand establishment. On tubers, the disease manifests as hard black sclerotia, netted necrosis, pitting, malformation, and cracking.

Brown cankers form on roots, stolons, and stems, and under high humidity, a dirty-white mycelial mat may appear at the base of the stems. Vegetative symptoms include upward cupping of upper leaves and the formation of aerial tubers. Specific resistance genes to the pathogen have not been identified; therefore, varietal resistance is evaluated as a quantitative trait using scoring scales in artificially inoculated fields.

General information about the subject — on the page Rhizoctonia.

Sources8

Varieties of Potato mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Katka

Protection expired

Solanum tuberosum L. · Potato

CZ SK
4 records

Savona

Active

Solanum tuberosum L. · Potato

NL
3 records

Nikoleta

Terminated

Solanum tuberosum L. · Potato

CZ
3 records

Kulta

Terminated

Solanum tuberosum L. · Potato

FI
3 records

Anatori

Active

Solanum tuberosum L. · Potato

CZ
3 records

TERTUS

Protection expired

Solanum tuberosum L. · Potato

VANDEL POTATOES I/S

DK
2 records

SAPHIR

Terminated

Solanum tuberosum L. · Potato

KRAFFT (DE)

FR
1 record

RumianaSavanna

Terminated

Solanum tuberosum L. · Potato

Kupreichuk Viktor Petrovych, Dan`ko Heorhii Vasyl`ovych, Kolontai Hryhorii Mykolaiovych, Khomenko Larysa Dmytrivna, Petrenko Kateryna Oleksandrivna, Onyshcenko Oleh Fedorovych,

UA
2 records

Solanum tuberosum L. · Potato

Voitseshyna Nataliia Ivanivna, Mel`nyk Pavlo Oleksiiovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Nazar Stefaniia Hryhorivna, Bondarchuk Anatolii Andriiovych, Osypchuk Andrii Antonovych,

UA
2 records

NETTED GEM

Terminated

Solanum tuberosum L. · Potato

L.BAARBAK

ES
1 record

Liubava

Active

Solanum tuberosum L. · Potato

Instytut kartopliarstva Natsionalnoi akademii ahrarnykh nauk Ukrainy

UA
2 records

Solanum tuberosum L. · Potato

Oliinyk Tetiana Mykolaivna, Zelia Heorhii Viorelovych, Roik Mykola Volodymyrovych, Rozhniatovskyi Andrii Olehovych, Podhaiets`kyi Anatolii Adamovych, Taktaiev Borys Anatoliiovych, Kupriianova Tetiana Mykolaivna, Zakharchuk Nataliia Anatoliivna, Furdyha My

UA
2 records

Rahneda

Terminated

Solanum tuberosum L. · Potato

UA
2 records

KATHADIN

Terminated

Solanum tuberosum L. · Potato

ES
1 record

Kardinal

Terminated

Solanum tuberosum L. · Potato

SK
1 record

Amsel

Terminated

Solanum tuberosum L. · Potato

SK
1 record

Allegria

Terminated

Solanum tuberosum L. · Potato

1 record