Jaranda
ActiveCapsicum annuum L. · Bell pepper
JUNTA EXTREMADURA (SIA)
ES
2 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.
Ignacy
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
3 records
Janick
ActiveSolanum tuberosum L. · Potato
Andelskartoffelmelsfabrikken Vendsyssel A.m.b.A. (AKV Langholt A.m.b.A.)
NL
4 records
Hubal
TerminatedSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
3 records
ISCI TOP
ActiveBrassica juncea (L.) Czern. · Brown mustard
CREA- CENTRO DI RICERCA CEREALICOLTURA E COLTURE INDUSTRIALI (CREA-CI)
IT
2 records
Ivory
ActiveSolanum tuberosum L. · Potato
HZPC Holland B.V.
NL
2 records
Helga
ActiveSolanum tuberosum L. · Potato
Germicopa Breeding
NL
2 records
Heidemarie
ActiveSolanum tuberosum L. · Potato
Karsten Ellenberg
DE
3 records
Irys
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
2 records
Incus
ActiveAllium porrum L. · Leek
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
2 records
Imanta
ActiveSolanum tuberosum L. · Potato
Gunta Bebre
LV
3 records
Iker
TerminatedSolanum tuberosum L. · Potato
APPAL/COOP.Nª.Sª. DE OCON
ES
2 records
Impresja
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
6 records
Heinz2127
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
3 records
harmony
ActiveFragaria x ananassa Duchesne ex Rozier · Garden strawberry
Information not available - Contact NL authorities
NL
2 records
Hajduk
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
4 records
Gundega
ActiveSolanum tuberosum L. · Potato
Gunta Bebre
LV
3 records
Hetman
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
8 records
Herbstgold
ActiveSolanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
AT
3 records
Graffito
TerminatedCapsicum annuum L. · Bell pepper
CREA-CENTRO DI RICERCA PER L'ORTICOLTURA (CREA-OF-PON)
IT
2 records
Gourmansun
ActiveSolanum lycopersicum L. · Tomato
HM.Clause S.A.S.
FR
3 records
Gwiazda
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
6 records
HCIP210
ActiveSolanum tuberosum L. · Potato
HZPC Research B.V
NL
2 records
Gulliver
ActiveSolanum lycopersicum L. var. lycopersicum · Tomato
MYaZINA LYuBOV' ANATOL'EVNA
IT
3 records