LB17906
ActiveMalus domestica (Suckow) Borkh. · Apple
Walter Guerra
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.
Linda
ActiveMalus domestica (Suckow) Borkh. · Apple
UL'YaNOVSKAYa ELENA VLADIMIROVNA / MOZhAR NINA VASIL'EVNA / BOGATYREVA SVETLANA VIKTOROVNA / MAHNO LYuBOV' VASIL'EVNA / NOVIKOVA LARISA ANATOL'EVNA / PRIChKO TAT'YaNA GRIGOR'EVNA / ChEHLAN' PAVEL IVANOVICh / MIRONOV ALEKSEJ PAVLOVICh / BUDNIKOVA ELENA NIK
Jm1
Application submittedMalus domestica (Suckow) Borkh. · Apple
YOSHIO YOSHIDA^^^SHICHIRO TSUCHIYA^^^Jun-ichi Soejima
Gradictive
ActiveMalus domestica (Suckow) Borkh. · Apple
Gradilis Recherche SARL
Galamic
ActiveMalus domestica (Suckow) Borkh. · Apple
Jürgen Braun
Harlequin
ActiveSolanum tuberosum L. · Potato
SCRI INVERGOWRIE
Gradiana
ActiveMalus domestica (Suckow) Borkh. · Apple
Gradilis Recherche SARL
FPMPAX
ActiveMalus domestica (Suckow) Borkh. · Apple
St. Cecilia's Abbey
Inca Rosa
ActiveSolanum tuberosum L. · Potato
JAMES HUTTON LTD
Gullauge
ActiveSolanum tuberosum L. · Potato
Landbruks- og matdepartementet, N - 0030 Oslo
Eir
ActiveSolanum tuberosum L. · Potato
Graminor AS, N-2322 Ridabu
Frida
ActiveMalus domestica (Suckow) Borkh. · Apple
Hilde Nybom
Dr. Jules Guyot
ActivePyrus communis L. · European pear
Dolgo
ActiveMalus Mill. · Apple
Sagaplant AS, N-3812 Akkerhaugen
EP MALMA
ActiveMalus toringo (Siebold) Siebold ex de Vriese · Toringa crab apple
Tomas Lagerström
Bounty
ActiveSolanum tuberosum L. · Potato
CYGNET POTATO BREEDERS
Charlemont
TerminatedSolanum tuberosum L. · Potato
Agri-food and Biosciences Institute (AFBI Belfast)
Catarina
ActiveMalus domestica (Suckow) Borkh. · Apple
Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina S.A. (EPAGRI)
Beniminori
Application submittedMalus domestica (Suckow) Borkh. · Apple
National Agriculture and Food Research Organization (NARO)
CIVM65
Application submittedMalus domestica (Suckow) Borkh. · Apple
Michelangelo Leis^^^Alessio Martinelli
CIVM35
Application submittedMalus domestica (Suckow) Borkh. · Apple
Michelangelo Leis^^^Alessio Martinelli
Bambino
ActiveSolanum tuberosum L. · Potato
CYGNET POTATO BREEDERS
Avgusta
ActiveMalus domestica (Suckow) Borkh. · Apple
SEDOV EVGENIJ NIKOLAEVICh / SEROVA ZOYa MIHAJLOVNA / DOLMATOV EVGENIJ ALEKSEEVICh / SEDYShEVA GALINA ALEKSEEVNA
Andeana
ActiveSolanum tuberosum L. · Potato
JAMES HUTTON LTD