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Diseases

Potato late blight

Solanum tuberosum L.

A dangerous disease caused by the oomycete Phytophthora infestans, which affects potato foliage and tubers. It is characterized by high genetic variability of the pathogen and the presence of vertical resistance based on R-genes.

In the reference 1 396 varieties crop Potato, where this is mentioned in the description.

The causative agent of the disease is Phytophthora infestans, which affects all plant organs. On the foliage, symptoms appear in the second half of the growing season as brown spots with a characteristic white fungal growth under high humidity. Infected tubers become covered with firm, sunken spots with a rusty-brown dry rot in the flesh.

Pathogen populations include complex races with multiple virulence genes capable of overcoming the resistance provided by R1, R2, R3, and other genes. In potato breeding, a distinction is made between vertical resistance, based on R-genes from wild species, and horizontal polygenic resistance, which restricts disease development regardless of the race composition of the pathogen.

General information about the subject — on the page Late blight.

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.

Azur

Active

Solanum tuberosum L. · Potato

ZIMMERMANN WILLI| Willi Zimmermann

CZ DE ES FR
11 records

Arrow

Active

Solanum tuberosum L. · Potato

MARIEN WINTERS_ / J. J. H. M. ALLEFS_ / J. J. VAN HOOGEN_

HR NL SI UA
13 records

Viviana

Active

Solanum tuberosum L. · Potato

Heinrich BOHM, DE

HR PL UA
14 records

Prada

Active

Solanum tuberosum L. · Potato

Jacob Eising

CZ NL UA
14 records

Erika

Active

Solanum tuberosum L. · Potato

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

AT DE FR
12 records

Electra

Active

Solanum tuberosum L. · Potato

Teagasc Crops Research Centre

IE MT UA
15 records

Delphine

Active

Solanum tuberosum L. · Potato

SAATZUCHT FRITZ LANGE KG, DE

DE NL UA
14 records

Talentine

Active

Solanum tuberosum L. · Potato

R.P.GRAVELAND

FR NL
13 records

Red Sonia

Active

Solanum tuberosum L. · Potato

Heinrich BOHM, DE

NL UA
15 records

Romeo

Active

Solanum tuberosum L. · Potato

Teagasc Oak Park Research Centre

IE UA
15 records

Kelly

Active

Solanum tuberosum L. · Potato

Gisele Lairy-Joly, Gisele Lairy-Joly, Germicopa Breeding, France

FR UA
13 records

Evolution

Active

Solanum tuberosum L. · Potato

RICHARD MOOIJWEER

NL UA
15 records

Estrella

Active

Solanum tuberosum L. · Potato

Winfried Lange, Frank Lange

DE UA
16 records

Amany

Active

Solanum tuberosum L. · Potato

LAIRY-JOLY Gisele

FR NL
12 records

Aurea

Active

Solanum tuberosum L. · Potato

Station de Recherche du Comité Nord G.I.E.

FR UA
17 records

King Russet

Active

Solanum tuberosum L. · Potato

Jan Boer

NL
14 records

Kingsman

Active

Solanum tuberosum L. · Potato

DOUGLAS HARLEY

NL
15 records

Farida

Active

Solanum tuberosum L. · Potato

Ytzen Pieter van der Werff^^^HZPC Holland B.V.

NL
13 records

Excellency

Active

Solanum tuberosum L. · Potato

MARIEN WINTERS

NL
14 records

Pamina

Active

Solanum tuberosum L. · Potato

UNICOPA/CLAUSE

BE DE DK ES FR IE +1
10 records

Provita

Active

Solanum tuberosum L. · Potato

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

CZ IE IT LT NL PL +1
10 records

Frieslander

Protection expired

Solanum tuberosum L. · Potato

Selectiebedrijf KOOI (NL)

AT BE DE DK FR NL +1
11 records

Ovatio

Protection expired

Solanum tuberosum L. · Potato

W. WEIBULL B.V.

DK ES FR IT NL PL +1
11 records

Nadine

Active

Solanum tuberosum L. · Potato

Dunnet, J.

DK ES FR IE LT SE
10 records

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