Nimbus
ActiveForsythia x intermedia Zabel · Border forsythia
Pineau Patrick
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.
LM300
ActiveLomandra longifolia · Spiny-head mat-rush
Todd Layt, Todd Layt
Glen Carron
ActiveRubus idaeus L. · Red raspberry
The James Hutton Institute, Dundee, DD2 5DA
Glen Mor
ActiveRubus idaeus L. · Red raspberry
The James Hutton Institute, Dundee, DD2 5DA
Falco
ActiveFragaria x ananassa Duchesne ex Rozier · Garden strawberry
Suiker Marcel
AmaRosa
ActiveSolanum tuberosum L. · Potato
The State of Oregon
Stine 11N20
ActiveGlycine max (L.) Merr. · Soybean
STINE SEED Co, USA
RO
UA
8 records
Stine 06N02
ActiveGlycine max (L.) Merr. · Soybean
STINE SEED Co, USA
RO
UA
7 records
Brooklyn
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V. (NL)
FR
HR
PL
4 records
Peto 86
Protection expiredSolanum lycopersicum L. · Tomato
PETOSEED CO
CZ
ES
SK
4 records
Platus
Protection expiredSolanum lycopersicum L. · Tomato
MONSANTO INVEST N.V.
NL
PL
SK
4 records
Celzus
Protection expiredSolanum lycopersicum L. · Tomato
MONSANTO INVEST N.V.
NL
PL
SK
4 records
Berolina
Protection expiredSolanum tuberosum L. · Potato
NORDKARTOFFEL| Nordkartoffel Zuchtgesellschaft mbH
DE
DK
ES
NL
5 records
Almonda
ActiveSolanum tuberosum L. · Potato
SOLANA GMBH & CO KG
NL
7 records
Vitador
ActiveSolanum lycopersicum L. · Tomato
Garden Seeds B.V.
NL
PL
SK
5 records
Titan
ActiveRubus idaeus L. · Red raspberry
OURECKY DONALD K. / SANFORD JOHN C.
FR
IT
NL
8 records
Sl 64
ActivePrunus mahaleb L. · Saint Lucie cherry
CZ
FR
HU
5 records
Peto 95
Protection expiredSolanum lycopersicum L. · Tomato
PETOSEED CO
CZ
ES
SK
4 records
Posmo
ActiveSolanum tuberosum L. · Potato
Landbrugets Kartoffelfond
DK
FI
FR
6 records
Matilda
ActiveGlycine max (L.) Merr. · Soybean
Sevita Genetics (CA)
FR
IT
UA
5 records
Lemance
Protection expiredSolanum lycopersicum L. · Tomato
De Ruiter Zonen (HR)
FR
HU
SK
4 records
Korrigane
TerminatedSolanum tuberosum L. · Potato
Federation des Syndicats Bretons (FR)
ES
FR
NL
6 records
Kresnik
ActiveSolanum tuberosum L. · Potato
Kmetijski inštitut Slovenije (SI)
HR
NL
SI
5 records
Jasia
ActiveSolanum tuberosum L. · Potato
PAWLAK| Dr. Pawlak c/o Hodowla Ziemniaka Zamarte Sp. z.o.o.
DE
PL
UA
7 records