Celtiane
ActiveSolanum tuberosum L. · Potato
Pierre Billant
FR
7 records
Diseases
Scab
Scab is a group of crop diseases caused by fungi, actinomycetes, or plasmodiophoromycetes, manifesting as spots, ulcers, and deformations on vegetative and generative plant organs.
Mentioned in descriptions 12 064 varieties reference book.
Apple and pear scab affects leaves, flowers, ovaries, and fruits, manifesting as olive-colored spots with a velvety coating, which leads to fruit cracking and yield loss. In potatoes, several types of scab are distinguished: common scab, where ulcers appear on tubers, and powdery scab, characterized by the formation of warts that rupture into powdery ulcers, as well as root damage.
The development of the disease depends on environmental conditions: for fruit scab, high humidity and rainfall are favorable, while for potatoes, it depends on soil specifics (pH, temperature, and moisture). Varietal resistance is ensured by breeding based on major genes or their combinations. Absolutely immune varieties do not exist, so resistance often manifests as field resistance and depends on the climatic zone.
In variety trials, resistance is assessed visually using a scoring scale or in percentages under natural and artificial infection backgrounds. To increase the accuracy of breeding, molecular genetic marking is used, which allows for the detection of resistance genes by genotype, minimizing phenotypic evaluation errors.
Breakdown by crop
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.
Buffalo
ActiveSolanum tuberosum L. · Potato
Teagasc Crops Research Centre
IE
7 records
Celine
ActiveSolanum tuberosum L. · Potato
Jack Dunnett
NL
8 records
Campina
ActiveSolanum tuberosum L. · Potato
SAKA PFLANZENZUCHT GMBH AND CO KG
DE
7 records
Bergerac
ActiveSolanum tuberosum L. · Potato
The Potato Company
NL
8 records
Aurum
ActiveSolanum tuberosum L. · Potato
Y P VAN DER WERFF
NL
9 records
Banba
ActiveSolanum tuberosum L. · Potato
Teagasc Oak Park Research Centre
IE
8 records
Amarin
ActiveSolanum tuberosum L. · Potato
STET Holland B.V.
NL
7 records
Alaska
ActiveSolanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
FR
7 records
Antonia
ActiveSolanum tuberosum L. · Potato
NORIKA| NORIKA Nordring-Kartoffelzucht- und Vermehrungs-GmbH
DE
10 records
Alpigala
ActiveMalus domestica (Suckow) Borkh. · Apple
THIERRY CLOS
FR
9 records
Alexandra
ActiveSolanum tuberosum L. · Potato
Heinrich Böhm
NL
9 records
African Red
ActiveMalus domestica (Suckow) Borkh. · Apple
ARC INFRUTEC NIETVOORBIJ
FR
7 records
Takano 6
ActiveMalus domestica (Suckow) Borkh. · Apple
Takao Takano
Sciglo
ActiveMalus domestica (Suckow) Borkh. · Apple
MCKENZIE JOY^^^Allan G. White
Pinot Prince
ActiveMalus domestica (Suckow) Borkh. · Apple
V.O.F. Gebr. Van Beuningen, Netherlands
Pachafpur
ActivePelargonium peltatum (L.) L'Hér. · Ivy-leaf geranium
Martin Geibel c/o Elsner pac Jungpflanzen GbR
MegaChip
ActiveSolanum tuberosum L. · Potato
Wisconsin Alumni Research Foundation
Gaia
ActiveMalus domestica (Suckow) Borkh. · Apple
Leis Michelangelo Martinelli Alessio Tagliani Francesco Castagnoli Gianfranco, C.I.V. Consorzio Italiano Vivaisti-Societa Consortile a R.L.
AmaRosa
ActiveSolanum tuberosum L. · Potato
The State of Oregon
Lucilla
ActiveSolanum tuberosum L. · Potato
Station de Recherche du ComitÚ Nord
NL
UA
8 records
Reglindis
ActiveMalus Mill. · Apple
Murawski en Fischer
HU
NL
RO
SK
4 records
Almonda
ActiveSolanum tuberosum L. · Potato
SOLANA GMBH & CO KG
NL
7 records
Spurkoop
ActiveMalus domestica (Suckow) Borkh. · Apple
TELLIER| Jean Tellier
BE
DE
FR
6 records