Lunarossa
ActiveSolanum tuberosum L. · Potato
Piet H.Smeenge
NL
6 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.
Luna
TerminatedSolanum tuberosum L. · Potato
ZIMMERMANN WILLI| Willi Zimmermann
DE
5 records
Mary Ann
ActiveSolanum tuberosum L. · Potato
NORIKA Nordring- Kartoffelzucht- und Ver
DE
5 records
Lukas
ActiveSolanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
DE
4 records
LD17
ActiveSolanum tuberosum L. · Potato
Station de Recherche du Comité Nord G.I.E.
FR
4 records
Leonore
ActiveSolanum tuberosum L. · Potato
Kweek- en Researchbedrijf Agrico B.V.
NL
5 records
Legendairy
ActiveMedicago sativa L. · Alfalfa
Forage Genetics International
PL
3 records
Lea
ActiveSolanum tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
DE
7 records
Lili
Application submittedSolanum tuberosum L. · Potato
SVALOF AB
BE
3 records
Laston
ActiveAllium porrum L. · Leek
NUNHEMS
NL
11 records
Koralik
ActiveSolanum lycopersicum L. · Tomato
PNOS
PL
3 records
Jubilat
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
5 records
Kerren
ActiveSolanum tuberosum L. · Potato
EUROPLANT Innvovation GmbH & Co. KG
DE
5 records
katica
ActiveSolanum tuberosum L. · Potato
Zsolt Géza Polgár^^^István Wolf^^^János Pintér^^^Miklós Lönhard^^^Zsolt Vaszily
HU
5 records
Isabel
TerminatedSolanum tuberosum L. · Potato
HERVE DUBREUIL_
FR
4 records
Karli
ActiveSolanum tuberosum L. · Potato
Averis Seeds B.V.
NL
3 records
Janke
ActiveSolanum tuberosum L. · Potato
Johan Martijn Kannegieter, Harm Kannegieter
NL
5 records
Jonas
ActiveSolanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
DE
4 records
Ino
ActiveSolanum tuberosum L. · Potato
Station de Recherche du Comite Nord (FR)
FR
4 records
Irga
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
3 records
Hamlet
Protection expiredSolanum tuberosum L. · Potato
Landbrugets Kartoffelfond, Foraedlst., DK-7184 Vandel
DK
5 records
Habibi
ActiveSolanum tuberosum L. · Potato
Teagasc
IE
5 records
Hunter
ActiveSolanum tuberosum L. · Potato
ROBERT BRADY
MT
4 records
Gorbea
ActiveSolanum tuberosum L. · Potato
NEIKER-INSTITUTO VASCO DE INVESTIGACIÓN Y DESARROLLO AGRARIO, S.A.
ES
4 records