Asana
ActiveGlycine max (L.) Merr. · Soybean
Semences Prograin Inc
UA
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.
Aromata
ActiveSolanum tuberosum L. · Potato
STET HOLLAND
NL
6 records
Bard
ActiveSolanum tuberosum L. · Potato
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
PL
6 records
Argana
ActiveSolanum tuberosum L. · Potato
Danespo A/S
DK
4 records
Ballerina
ActiveSolanum tuberosum L. · Potato
Landbrugets Kartoffelfond
DK
5 records
Balkonzauber
ActiveSolanum lycopersicum L. var. lycopersicum · Tomato
ISP QUEDLINBURG GERMANY
DE
4 records
Avito
ActiveSolanum tuberosum L. · Potato
Averis Seeds B.V.
NL
5 records
Aventra
ActiveSolanum tuberosum L. · Potato
Averis Seeds B.V.
NL
5 records
Avarna
ActiveSolanum tuberosum L. · Potato
Averis Seeds B.V.
NL
5 records
Antarctica
ActiveSolanum tuberosum L. · Potato
Teagasc
IE
6 records
Ascott
ActiveSolanum tuberosum L. · Potato
Danespo A/S
DK
4 records
Altus
ActiveSolanum tuberosum L. · Potato
Averis Seeds B.V.
NL
5 records
Annegret
ActiveSolanum tuberosum L. · Potato
Winfried Lange
DE
5 records
Almaz
ActiveSolanum melongena L. · Eggplant
ANDRIEVSKIJ ANATOLIJ SERGEEVICh
UA
3 records
Ardeche
ActiveSolanum tuberosum L. · Potato
Kweek- en Researchbedrijf Agrico B.V.
NL
6 records
Aratus
ActiveAllium porrum L. · Leek
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Amyla
ActiveSolanum tuberosum L. · Potato
Germicopa SA (FR)
FR
4 records
Ampera
TerminatedSolanum tuberosum L. · Potato
Friedrich Fedhofer
DE
5 records
Ambrine
ActiveSolanum tuberosum L. · Potato
Chantal Lorentz^^^Pierre Billant^^^Bretagne-Plants S.C.I.C.A.
FR
4 records
Alibaba
ActiveSolanum tuberosum L. · Potato
Teagasc
IE
6 records
AAC Invest 1605
ActiveGlycine max (L.) Merr. · Soybean
Elroy Cober
UA
4 records
Albertine
ActiveSolanum tuberosum L. · Potato
Justus Böhm
DE
5 records
WES04
ActiveWestringia fruticosa (Willd.) Druce · Coastal rosemary
Nuflora International Pty Ltd
WSU 1605
ActiveRubus idaeus L. · Red raspberry
Washington State University Puyallup Research and Extension Center