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agronom.cc cultivar database

Pests

Aphids

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.

Sources10

Breakdown by crop

Lettuce aphid 1 326 Melon Aphid on Melon 220 Apple Aphids 85 Apple Aphid 44 Aphids on Raspberry 43 Alfalfa Aphid 35 Aphids on soft wheat 16 Aphids on Lettuce 13 Aphids on Barley 13 Aphids on Paradise Apple 12 Sorghum aphid 11 Peach aphid 10 Aphid — Red Currant 10 Chrysanthemum aphid 10 Hop aphid on hops 9 Aphids on faba beans 9 Aphids on Faba Beans 9 Pea aphid on peas 9 Aphids on carrot 9 Aphids — White Cabbage 8 Aphid infestation of Canadian poplar 8 Black Cherry Aphid — Sour Cherry 7 Cabbage aphid on rapeseed 7 Aphids on Sugar Beet 7

Found in these crops

Lettuce 1 340 Melon 220 Apple 85 Apple 44 Red raspberry 41 Alfalfa 35 Bread wheat 17 Barley 14 Maize 13 Leaf lettuce 13 Paradise apple 12 Sorghum 11

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.

Benetti

Terminated

Chrysanthemum pacificum Nakai · Pacific chrysanthemum

Andreas Niederländer

2 records

Berry Exciting

Active

Corydalis shimienensis C. Y. Wu & Z. Y. Su

Korlipara Harini|Canby, OR, US

2 records

Almerana

Active

Lathyrus cicera x Lathyrus sativus

Diego Rubiales Olmedo^^^Ana Moral Jiménez

2 records

Amalie

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe S.A.S

2 records

P1758Y

Active

Zea mays L. · Maize

Pioneer Genetique SARL

PT
3 records

Taranto

Active

Vicia ervilia (L.) Willd. · Bitter vetch

AGROSA SEMILLAS SELECTAS, S.A.

ES
2 records

Milo W

Active

Sorghum bicolor (L.) Moench · Sorghum

Chykaliuk Peter Bohdan

UA
3 records

Maris dove

Terminated

Triticum aestivum L. · Bread wheat

Plant Breeding International Cambridge Ltd (GB)

FR
3 records

Lysimax

Terminated

Hordeum vulgare L. · Barley

SEJET PLANTEFORÆDLING

DK
3 records

DN Rubin

Active

Zea mays L. · Maize

Bernatskyi Maksym Mykhailovych, Haidash Oleksandr Leonidovych, Husak IUliia Viktorivna, Bodenko Natalia Anatoliivna, Nehoda Tetiana Volodymyrivna, Marochko Valentyna Anatoliivna, Olizko Oleksii Petrovych, Fedko Mykola Mykolaiovych, Cherchel Vladyslav IUri

UA
3 records

Pirat

Active

Lactuca sativa L. · Lettuce

CZ SK
3 records

Topas

Active

Prunus cerasus L. · Sour cherry

DE PL
4 records

Primus

Active

Ribes rubrum L. · Redcurrant

CZ NL
6 records

Leo

Active

Rubus idaeus L. · Red raspberry

FR NL
4 records

Rivera

Active

Brassica oleracea L. (White Cabbage Group) · White cabbage

CZ NL
4 records

Suncats

Active

Malus domestica (Suckow) Borkh. · Apple

CZ DE
8 records

Goldcats

Active

Malus domestica (Suckow) Borkh. · Apple

CZ DE
8 records

Corbana

Active

Lactuca sativa L. · Lettuce

NL
4 records

Namoi

Active

Vicia villosa Roth · Hairy vetch

IT
4 records

Jumbis

Active

Lactuca sativa L. · Lettuce

NL
3 records

Giove

Active

Cichorium intybus L. (Leaf Chicory Group) · Chicory

NL
4 records

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