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
Cucumis sativus L. · Cucumber
Instytut Warzywnictwa im. Emila Chroboczka
Malus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Malus domestica (Suckow) Borkh. · Apple
Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas
Malus domestica (Suckow) Borkh. · Apple
Gospodarstwo Szkółkarskie Andrzej i Szymon Nowakowscy
Prunus persica (L.) Batsch · Peach
Budzynskyi Oleksandr Serhiiovych,Yarmoliuk Ivan Savych,
Malus domestica (Suckow) Borkh. · Apple
PAGANELLI (US)
Solanum tuberosum L. · Potato
Riazantsev Vasyl` Borysovych, Voitseshyna Nataliia Ivanivna, Mel`nyk Pavlo Oleksandrovych, Razkevych Mykola Pylypovych, Ostrenko Mykhailo Volodymyrovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Podhaiets`kyi Anatolii Adamovych, Nazar Stefan
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Pyrus communis L. · European pear
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus domestica (Suckow) Borkh. · Apple
Kuz`minets` Oksana Mykolaivna, Boldyzheva Liubov Dmytrivna,
Malus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
Solanum tuberosum L. · Potato
Voitseshyna Nataliia Ivanivna, Mel`nyk Pavlo Oleksiiovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Nazar Stefaniia Hryhorivna, Bondarchuk Anatolii Andriiovych, Osypchuk Andrii Antonovych,
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus Mill. · Apple
Mezhenska Liudmyla Oleksiivna, Mezhenskyi Volodymyr Mykolaiovych,
Malus domestica (Suckow) Borkh. · Apple
Kopan` Kira Mykolaivna, Kopan Volodymyr Pavlovych,
Pyrus communis L. · European pear
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Malus domestica (Suckow) Borkh. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Solanum tuberosum L. · Potato
Sheremet Nina Larionivna, Haiduk Petro Pavlovych, Osypchuk Andrii Antonovych, Tereschenko Oleksandr Ivanovych, Nazar Stefaniia Hryhorivna, Zhyhailo Iosyp Ivanovych, Koval` Nataliia Demianivna, Serhiienko Viktoriia Mykhailivna, Hladka Rehina Mykhailivna, S
Malus domestica (Suckow) Borkh. · Apple
APP Darzkopibas instituts, R.Dumbravs
Malus domestica (Suckow) Borkh. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka