Euroking
Protection expiredSolanum tuberosum L. · Potato
Heinrich Böhm
DE
4 records
Diseases
Late blight
Phytophthora infestans
Late blight is a dangerous disease of solanaceous crops caused by an oomycete, which manifests as the appearance of spots on leaves, stems, and tubers. The development of the disease is triggered by high humidity and moderate temperatures, which can lead to significant crop losses.
Mentioned in descriptions 6 798 varieties reference book.
Affected plants develop dirty-brown spots, often accompanied by a whitish mold on the underside of the leaf, while elongated dark-brown spots appear on the stems. Tubers show hard, sunken brown spots, and the internal tissue exhibits a characteristic rust-brown discoloration upon cutting.
Epiphytotics develop under conditions of high air humidity around 90% and alternating warm days with cool nights. The presence of free moisture, such as dew or fog, is a critical factor for rapid spore germination, which allows the infection to spread across the field in 10–15 days.
In breeding, a distinction is made between specific vertical resistance, controlled by R-genes, and field horizontal resistance, which is considered more reliable due to its polygenic nature and ability to slow down pathogen development. Varieties are evaluated using a 9-point scale; however, the resistance level of the foliage does not always coincide with that of the tubers, requiring comprehensive analysis during variety testing.
Breakdown by crop
Potato late blight
1 396
Tomato Late Blight
273
Phytophthora root rot of strawberry
99
Phytophthora Root and Stem Rot of Soybean
61
Phytophthora Root Rot of Alfalfa
41
Phytophthora blight of pepper
41
Apple Phytophthora Rot
24
Phytophthora Root Rot of Raspberry
21
Apple Phytophthora Rot
20
Tomato Late Blight
17
Citrus Phytophthora
17
Plum Phytophthora root rot
15
Phytophthora blight — hybrids between Citrus x aurantium L. x Citrus trifoliata L.
13
Strawberry Phytophthora root rot
13
Phytophthora Root Rot of Blueberry
11
Phytophthora root rot of sweet chestnut
9
Phytophthora blight — Leek
7
Phytophthora root rot of sour cherry
6
Phytophthora root rot of paradise apple
6
Avocado Phytophthora Root Rot
6
Peach Phytophthora Root Rot
5
Phytophthora root rot of Vaccinium
5
Late Blight of Eggplant
4
Phytophthora root rot of Prunus amygdalus x Prunus persica
4
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.
Etoile du léon
TerminatedSolanum tuberosum L. · Potato
Domaine Public (FR)
FR
3 records
Eris
ActiveSolanum tuberosum L. · Potato
Station de Recherche du Comité Nord G.I.E.
FR
4 records
Eole
TerminatedSolanum tuberosum L. · Potato
JEAN MARC ABHIVEN_
FR
4 records
Dounia
ActiveSolanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
FR
4 records
Dundrod
Protection expiredSolanum tuberosum L. · Potato
SEED POTATO PROMOTIONS(N.I.) LTD
SE
4 records
Dubrava
ActiveSolanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
UA
4 records
Dominátor
ActiveSolanum tuberosum L. · Potato
Vesa Velhartice a.s.
CZ
4 records
Ecrin
ActiveSolanum tuberosum L. · Potato
Ets Desmazieres Artois Bapume
FR
6 records
E20S0492
ActiveCapsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
NL
5 records
E 420088
ActiveCapsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
NL
4 records
Django
ActiveSolanum tuberosum L. · Potato
Bavaria Saat GbR
DE
4 records
Datlo
ActiveSolanum lycopersicum L. · Tomato
SEMO a.s
CZ
3 records
Darling
ActiveSolanum tuberosum L. · Potato
Danespo A/S
DK
4 records
CPB-4475
ActiveHybrids between Citrus x aurantium L. x Citrus trifoliata L.
ES
3 records
Columbia
ActiveSolanum tuberosum L. · Potato
Europlant Innovation GmbH & Co. KG
DE
5 records
David
ActiveSolanum tuberosum L. · Potato
Vesa Velhartice a.s.
CZ
5 records
Dassel
Protection expiredGlycine max (L.) Merr. · Soybean
Minnesota Agricultural Experiment Station
IT
3 records
Dalkeith
ActiveTrifolium subterraneum L. · Subterranean clover
WESTERN AUSTRALIA,DEP.AGR
ES
3 records
Dalida
ActiveSolanum tuberosum L. · Potato
Grocep S.I.C.A.
FR
4 records
Cirielle
ActiveSolanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
FR
4 records
Courlan
Protection expiredSolanum tuberosum L. · Potato
Robert W. Hoopes
PL
5 records
Cartagena
ActiveSolanum tuberosum L. · Potato
Piet H.Smeenge
NL
6 records
Charlene
ActiveSolanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
FR
4 records