Obama
ActiveSolanum tuberosum L. · Potato
SELECTIEBEDRIJF KOOI
NL
8 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.
Odys
ActiveCucumis sativus L. · Cucumber
PNOS
PL
6 records
Meister
ActiveSolanum tuberosum L. · Potato
Stephan Berger
DE
7 records
Madrid
ActiveSolanum tuberosum L. · Potato
The Potato Company
NL
7 records
Marvel
ActiveSolanum tuberosum L. · Potato
Smeenge, P.H.
NL
7 records
Lady Balfour
ActiveSolanum tuberosum L. · Potato
SCOTTISH CROP RESEARCH INSTITUTE
NL
7 records
Jester
ActiveSolanum tuberosum L. · Potato
The James Hutton Institute
NL
7 records
Infinity
ActiveCucumis sativus L. · Cucumber
NUNHEMS
NL
5 records
Jule
ActiveSolanum tuberosum L. · Potato
SOLANA SEEDS UNITED KINGDOM LTD. UNIT 4
DE
8 records
Isabelia
ActiveSolanum tuberosum L. · Potato
Heinrich Böhm
NL
8 records
Huckleberry Gold
ActiveSolanum tuberosum L. · Potato
University of Idaho
DE
7 records
Harry
ActiveSolanum tuberosum L. · Potato
IRISH SEED POTATOES LTD
IE
8 records
Gemson
ActiveSolanum tuberosum L. · Potato
The James Hutton Institute
NL
7 records
Goldlane
ActiveMalus domestica (Suckow) Borkh. · Apple
Tupy Jaroslav|Praha 6, CS / Louda Otto|Pencin u Liberce, CS / Zima Jan|Turnov, CS
NL
8 records
Gerona
ActiveSolanum tuberosum L. · Potato
Wilhelm Weuthen GmbH & Co. KG^^^Schaap Holland B.V.
NL
6 records
Fenway Red
ActiveSolanum tuberosum L. · Potato
IPR B.V.
NL
7 records
Defender
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
PHP PETERSEN
DE
6 records
Classic Russet
ActiveSolanum tuberosum L. · Potato
University of Idaho, Office of Technology Transfer
NL
6 records
Cimega
ActiveSolanum tuberosum L. · Potato
LKF-Vandel
DK
6 records
Chenoa
ActiveSolanum tuberosum L. · Potato
Interseed Potatoes GmbH
DE
7 records
CH 101
ActiveMalus domestica (Suckow) Borkh. · Apple
Markus Kellerhals Agroscope
FR
8 records
Caudle
ActiveMalus Mill. · Apple
M. Doyle Fleming Caudle Apple Inc.
SK
6 records
Canopy
ActiveMalus domestica (Suckow) Borkh. · Apple
IFO SARL (FR)
FR
5 records
Cheyenne
ActiveSolanum tuberosum L. · Potato
SICA GROCEP
FR
6 records