Diseases
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.
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.
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus Mill. · Apple
Atanas Blagov
Pyrus communis L. · European pear
Kovtun Ivan Mykhailovych
Solanum tuberosum L. · Potato
Koval` Nataliia Demianivna, Serhiienko Viktoriia Mykhailivna, Zhyhailo Iosyp Ivanovych, Nazar Stefaniia Hryhorivna, Tereschenko Oleksandr Ivanovych, Osypchuk Andrii Antonovych, Sheremet Nina Illarionivna,
Pyrus communis L. · European pear
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Solanum tuberosum L. · Potato
Instytut Ziemniaka
Solanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
Solanum tuberosum L. · Potato
Oliinyk Tetiana Mykolaivna, Borivs`kyi Anatolii Frantsovych, Furdyha Mykola Mykolaiovych, Abdurahimova Tamara Volodymyrivna, Borzykh Oleksandr Ivanovych, Hunchak Volodymyr Mykhailovych, Tymko Mykola Hryhorovych, Bondarchuk Anatolii Andriiovych, Sydorchuk
Pyrus communis L. · European pear
Opalko Ol`ha Anatoliivna, Opalko Anatolii Ivanovych, Zaplichko Fedora Onysymivna, Desiatov Anatolii Matviiovych, Kondratenko Petro Vasyl`ovych,
Solanum tuberosum L. · Potato
Olsztyńska Hodowla Ziemniaka i Nasiennictwo OLZNAS-CN sp. z o.o.
Malus domestica (Suckow) Borkh. · Apple
Toth Magdolna / Bodor Peter / Kovacs Szilvia
Solanum tuberosum L. · Potato
Averis Seeds B.V.
Malus domestica (Suckow) Borkh. · Apple
Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
Pyrus L. · Pear
LAND SACHSEN| Land Sachsen, vertreten durch Saechsische Landesanstalt fuer Landwirtschaft
Solanum tuberosum L. · Potato
Vilmorin SA (FR)
Malus domestica (Suckow) Borkh. · Apple
Kondratenko Tetiana IEhorivna, Boldyzheva Liubov Dmytrivna, Kopan` Kira Mykolaivna, Kopan Volodymyr Pavlovych,
Pyrus communis L. · European pear
Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
Solanum tuberosum L. · Potato
Zelia Avreliia Heorhiivna, Cherednichenko Liubov Mykolaivna, Osypchuk Alla Andriivna, Taktaiev Borys Anatoliiovych, Nazar Stefaniia Hryhorivna, Osypchuk Andrii Antonovych, Furdyha Mykola Mykolaiovych, Bondarchuk Anatolii Andriiovych,
Pyrus communis L. · European pear
Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
Malus domestica (Suckow) Borkh. · Apple
Lenkijos sodininkystės ir gėlininkystės institutas
Cucumis sativus L. · Cucumber
Bartkovska Zofiia, Drozhdzhevska Krystyna, Lakovska-Ryk El`zhbeta, Dorukhovski Rokh,
Malus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
Malus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
Ribes uva-crispa L. · Gooseberry
Shestopal Halyna Serhiivna, Kopan Volodymyr Pavlovych, Kopan` Kira Mykolaivna,