Maldive
ActiveSolanum tuberosum L. · Potato
SARL L.S.A.
FR
6 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.
Lureprec
ActiveMalus domestica (Suckow) Borkh. · Apple
Markus Kobelt
DE
5 records
Lily Rose
ActiveSolanum tuberosum L. · Potato
Wageningen UR Plant Breeding
NL
8 records
Lexie
ActiveSolanum tuberosum L. · Potato
Teagasc Crops Research Department
IE
7 records
KIS Slavnik
ActiveSolanum tuberosum L. · Potato
Kmetijski inštitut, SI
SI
5 records
Imrus
ActiveMalus domestica (Suckow) Borkh. · Apple
VNII SELEKCZII PLODOVYX KULTUR
EE
7 records
Honeycrisp
Application submittedMalus Mill. · Apple
Luby, Jim|St. Paul, MN / Bedford, David S.|Delano, MN
IT
4 records
Hind
ActiveSolanum tuberosum L. · Potato
Fobek B.V./A. de Nijs & Zonen. BV/Handelmaatschappij Pars B.V.
NL
9 records
Hi Score
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
7 records
Gazelle
ActiveSolanum tuberosum L. · Potato
Grocep S.I.C.A.
NL
7 records
Franceline
ActiveSolanum tuberosum L. · Potato
Station du Comite Nord (FR)
FR
6 records
Gala schnitzer
ActiveMalus domestica (Suckow) Borkh. · Apple
SCHNIGA S.R.L.
NL
8 records
Galata
ActiveSolanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
AT
6 records
Frig
ActiveSolanum tuberosum L. · Potato
DANESPO AS, DK - 7323 GIVE
DK
5 records
Fiesta
ActiveMalus Mill. · Apple
Frank H. Alston Institute of Horticultural Research
SE
5 records
Estebana
ActiveSolanum tuberosum L. · Potato
IPR B.V.
NL
6 records
Efera
ActiveSolanum tuberosum L. · Potato
Piet H.Smeenge
NL
6 records
Delcored
ActiveMalus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
FR
8 records
Delfloga
ActiveMalus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
FR
6 records
Coquine
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
FR
7 records
Delfloki
ActiveMalus domestica (Suckow) Borkh. · Apple
Société Nouvelle Pépinières et Roseraies Georges Delbard S.A.S.
FR
7 records
Cauvil
ActiveMalus domestica (Suckow) Borkh. · Apple
Dalival SAS (FR)
FR
6 records
Cephora
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
FR
6 records
Cadaune
Protection expiredPyracantha M.J. Roem. · Firethorn
L'INSTITUT NATIONAL DE LA
FR
4 records