Pests
Aphididae
Aphids are sap-sucking pests that cause leaf deformation, stunted plant growth, and reduced productivity. They also act as vectors for viral infections and facilitate the growth of sooty mold on the honeydew they secrete.
Mentioned in descriptions 6 810 varieties reference book.
Aphids are small sap-sucking pests that deplete plant cell sap during feeding, inhibiting photosynthesis and protein synthesis. Infestation manifests as leaf curling and deformation, the appearance of galls, premature leaf drop, and general suppression of shoots. The pest is diagnosed by colonies on the underside of leaves, the presence of a sticky honeydew coating, and ant activity.
Varietal resistance to aphids is classified as high (HR), which restricts pest development, or intermediate (IR), which can manage infestation under moderate pressure. The effectiveness of varietal protection depends on the type of mechanisms: vertical, which provides specific immunity to certain races, or horizontal, which creates general buffer resistance through the plant's physiological and biochemical properties.
Resistance assessment is a dynamic characteristic, as pests evolve by overcoming race-specific resistance genes. To maintain stability, agronomists apply the rotation of varieties with different resistance genes and combine their use in mixtures, avoiding monoculture with identical characteristics on the same land areas over long periods.
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.
Triticum monococcum L. · Einkorn wheat
Uniwersytet Warmińsko-Mazurski w Olsztynie
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Cucumis melo L. · Melon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Prunus domestica L. · European plum
Institute of Fruit Crops-Plovdiv
Malus pumila L. Mill. · Paradise apple
INCONNU (FR)
Lactuca sativa L. · Lettuce
Yuksel Seeds B.V.
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Vicia narbonensis L. · French vetch
ITACYL (CASTILLA Y LEON)
Cucumis melo L. · Melon
MERIDIEM SEEDS S.L.
Glycine max (L.) Merr. · Soybean
Istvan Rajcan
Cucumis melo L. · Melon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Cucumis melo L. · Melon
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Vicia ervilia (L.) Willd. · Bitter vetch
ITAP (ALBACETE)
Lactuca sativa L. · Lettuce
Gautier Semences SAS (FR)
Hordeum vulgare L. · Barley
Von Borries-Eckendorf (DE)/Ringot (FR)
Cucurbita pepo L. · Field pumpkin
Gautier Semences SAS (FR)
Malus pumila L. Mill. · Paradise apple
EAST MALLING RESEARCH ST. (GB)
Malus Mill. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Malus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
Malus domestica (Suckow) Borkh. · Apple
Information not available - Contact NL authorities
Berberis thunbergii DC. · Japanese barberry
Dariusz Kapias
Cucumis melo L. · Melon
INTERSEMILLAS, S.A.
Lactuca sativa L. var. crispa L. · Leaf lettuce
Mytenko Inna Mykolaivna, Kuraksa Nina Petrivna, Nesyn Volodymyr Mykolaiovych, Pozniak Oleksandr Vasyl`ovych, Tkalych IUrii Vadymovych, Korniienko Serhii Ivanovych, Horova Tamara Korniivna, Kondratenko Serhii Ivanovych,