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.

Bombay Red

Withdrawn

Celosia argentea L. var. cristata (L.) Kuntze · Cockscomb

Henricus G.A. van der Boog

1 record

Charcane

Active

Populus x canadensis Moench · Carolina poplar

Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE) , Institut Technologique FCBA, Institut National de Recherche en Sciences et Technologies pour l’Environnement et l’Agriculture (IRSTEA)

1 record

Boulevard

Terminated

Chrysanthemum L. · Chrysanthemum

Cleangro Ltd

1 record

Boynton

Withdrawn

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

1 record

BALAZDELIM

Withdrawn

Verbena L. · Vervain

SCOTT C TREES

1 record

bullechi 01

Terminated

Echinacea purpurea (L.) Moench · Purple coneflower

Hartwig Bull

1 record

Asakgreen

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

1 record

Balangdeum

Terminated

Angelonia Bonpl. · Angelonia

SCOTT C TREES

1 record

Balazlipi

Terminated

Verbena L. · Vervain

SCOTT C TREES

1 record

Balazgagic

Terminated

Verbena L. · Vervain

SCOTT C TREES

1 record

Amelie

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe S.A.S

1 record

AF13

Active

Populus x canadensis Moench · Carolina poplar

Franco Alasia

1 record

MORO DA 291

Active

Vicia ervilia (L.) Willd. · Bitter vetch

ITAP (ALBACETE)

1 record

GL Sunrise

Withdrawn

Vicia faba L. var. equina St.-Amans · Horse bean

Saatzucht Gleisdorf

1 record

G 016

Active

Malus Mill. · Apple

Information not available - Contact NL authorities

1 record

Norfolk Giant

Protection expired

Daucus carota L. · Carrot

HR SI

2 records

Bangholm wilby otofte

Protection expired

Brassica napus L. var. napobrassica (L.) Rchb. · Rutabaga

HR SI

2 records

Kievertriviok

Terminated

Verbena L. · Vervain

1 record

Whitestar

Protection expired

Goeppertia majestica (Linden) Borchs. & S. Suárez

1 record

Voinesti 2

Active

Malus domestica (Suckow) Borkh. · Apple

1 record

Vitius

Terminated

Lactuca sativa L. · Lettuce

1 record

White Star

Withdrawn

Exacum L. · Persian violet

1 record

White Anne

Protection expired

Fittonia Coem. · Fittonia

1 record

URTEBI HANDI

Application submitted

Malus domestica (Suckow) Borkh. · Apple

1 record

1 2 ... 87 88 89 90 91 92 93 94 95 96 Next

Jump to page 14 27 41 55 69 80 82

Pests

All terms →

Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.