Skywalker
ActiveSolanum tuberosum L. · Potato
CYGNET POTATO BREEDERS
BE
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.
SF Vario
ActiveSolanum tuberosum L. · Potato
Stephan Berger
DE
5 records
Scapa
ActiveSolanum tuberosum L. · Potato
JAMES HUTTON LTD
NL
6 records
Signum
ActiveSolanum tuberosum L. · Potato
J.J. Schilt
NL
7 records
Saprodi
ActiveSolanum tuberosum L. · Potato
Sloots Aardappelkweekbedrijf B.V.
NL
6 records
Sansa
Application submittedMalus Mill. · Apple
Yoshida, Yoshio|Ibaraki, Japan / Haniuda, Tadayuki|Suzaka, Japan / Tsuchiya, Shichiro|Morioka, Japan / Sanada, Tetsuro|Ibaraki, Japan / Masuda, Tetsuo|Morioka, Japan / Bessho, Hideo|Morioka, Japan / McKenzie, Donald W.|Havelock North, New Zealand
NL
4 records
Roslin
ActiveSolanum tuberosum L. · Potato
Jacob Heidemans
NL
7 records
Rosemarie
ActiveSolanum tuberosum L. · Potato
Karsten Ellenberg
DE
4 records
Romantica
ActiveSolanum tuberosum L. · Potato
Austinus Jansen
NL
8 records
Perdiz
ActiveSolanum tuberosum L. · Potato
IPR BV
NL
8 records
Octa
ActiveSolanum tuberosum L. · Potato
Aardappelkweek-en Selectiebedrijf Ijsselmeerpolders B.V.
NL
8 records
Nectana
ActivePrunus persica (L.) Batsch · Peach
Maillard Arsene / Maillard Laurence
FR
6 records
Nazca
ActiveSolanum tuberosum L. · Potato
Station Recherche du Comité Nord (GIE)
FR
6 records
Neptun
ActiveSolanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
PL
8 records
Miroslava
ActiveCucumis sativus L. · Cucumber
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
NL
4 records
Montis
ActiveSolanum tuberosum L. · Potato
Interseed Potatoes GmbH
DE
6 records
Mirage
ActiveCucumis sativus L. · Cucumber
Syngenta, NL
NL
4 records
Martina
ActiveSolanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
AT
6 records
Mariska
ActiveSolanum tuberosum L. · Potato
R.J. Mansholt's Veredelingsbedrijf
NL
6 records
Masai
ActiveSolanum tuberosum L. · Potato
BERNARD KRIJGER
NL
8 records
Mascha
ActiveSolanum tuberosum L. · Potato
NORIKA Nordring- Kartoffelzucht- und Ver
DE
6 records
Manhattan
ActiveSolanum tuberosum L. · Potato
CYGNET POTATO BREEDERS
NL
6 records
Lorimer
ActiveSolanum tuberosum L. · Potato
M HIGGINS LTD
NL
4 records
Lisana
ActiveSolanum tuberosum L. · Potato
DR. LUDWIG SIMON
DE
9 records