GREENPAC
ActivePrunus amygdalus x Prunus persica
Agromillora Catalana S.A.U.
ES
2 records
Pests
Nematodes
Nematodes are microscopic roundworm endoparasites that feed on plant sap and cause significant yield losses. Varietal resistance is provided by genetic mechanisms that prevent pest reproduction and is assessed according to the International Seed Federation scale.
Mentioned in descriptions 13 637 varieties reference book.
Nematodes are microscopic roundworms ranging from 0.3 to 2 mm in size that act as obligate plant parasites. Most species penetrate root, stem, or bulb tissues, causing growth inhibition, wilting, and patchy crop development, with tissue damage often facilitating secondary infections.
Varietal resistance to nematodes is based on the plant's genetic apparatus, including specific R-genes that limit the feeding or reproduction of the pest. In some cases, protection is provided by a hypersensitive response, where local cell death occurs at the site of infection.
Protection efficacy is evaluated using International Seed Federation codes: HR denotes high resistance with limited parasite development under high inoculum pressure, while IR indicates intermediate resistance. The level of protection is race-specific and depends on the specific species and pathotype of the nematode.
Breakdown by crop
Root-knot nematodes of tomato
1 711
Potato nematodes
1 231
Nematodes of sugar beet
287
Pepper Nematodes
154
Nematodes — Oilseed radish
143
Nematodes in white mustard
105
Nematodes — Tomato (Interspecific Hybrids)
79
Alfalfa nematodes
62
Barley nematodes
55
Root-knot nematodes of tomato
49
Soybean cyst nematode
35
Grapevine Nematodes
32
Plum nematodes
24
Peach nematodes
22
Rice nematodes
22
Nematodes in black oat
21
Nematodes of oats
20
Citrus Nematode
19
Nematodes — Prunus amygdalus x Prunus persica
16
Nematodes of White Clover
15
Nematodes in Prunus davidiana × Prunus persica hybrids
14
Nematodes — Solanum torvum Sw.
14
Nematodes — common wheat
14
Nematodes — hybrids between Citrus x aurantium L. x Citrus trifoliata L.
13
Found in these crops
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.
Heinz5408
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Heinz1902
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Heinz1657 VHL
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Heinz1293
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Golden Quince
TerminatedNarcissus L. · Daffodil
World Flower B.V.
NL
2 records
Granoval
ActiveSolanum lycopersicum L. · Tomato
MAGNUM SEEDS INC
ES
2 records
Gourmandia
ActiveSolanum lycopersicum L. · Tomato
Clause (FR)
FR
2 records
Graham
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
4 records
Globe Trotter
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
2 records
Harmonary
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Heinz2249
ActiveSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Heinz1175
TerminatedSolanum lycopersicum L. · Tomato
HEINZSEED
PT
2 records
Goulvena
TerminatedSolanum tuberosum L. · Potato
MAZEAS DANIEL
FR
4 records
Gwiazda
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
6 records
Gonsella
ActiveSolanum lycopersicum L. · Tomato
HAZERA SEEDS BV
ES
3 records
Goldnet
ActiveSolanum lycopersicum L. · Tomato
Prosem (FR)
FR
2 records
GUNHILD
TerminatedHordeum vulgare L. · Barley
Pajbjergfonden
DK
4 records
Giug
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
6 records
Guinea
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
4 records
Guarapo
ActiveSolanum lycopersicum L. · Tomato
HAZERA SEEDS BV
ES
3 records
Guindo
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Giulietta
ActiveSolanum lycopersicum L. · Tomato
Clause Tezier, FR
FR
2 records
Galoper
ActiveCapsicum annuum L. · Bell pepper
HAZERA SEEDS BV
ES
2 records