Dominátor
ActiveSolanum tuberosum L. · Potato
Vesa Velhartice a.s.
CZ
4 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.
Efe
ActiveOryza sativa L. · Rice
Sultan Sahin, Recep Kaya, Necmi Beser, Halil Surek,
UA
4 records
Dohkko
Activehybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Syngenta Seeds B.V.
NL
4 records
Dynafort
ActiveSolanum lycopersicum x Solanum pimpinellifolium · Tomato
Monsanto Vegetable IP Management B.V.
NL
4 records
Duratom
ActiveSolanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
ES
4 records
Dubino
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
5 records
Django
ActiveSolanum tuberosum L. · Potato
Bavaria Saat GbR
DE
4 records
Delisher
ActiveSolanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
NL
5 records
Daylos
ActiveSolanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
NL
4 records
Dino
ActiveSolanum lycopersicum L. · Tomato
HM.CLAUSE
NL
3 records
Donna
ActiveSolanum tuberosum L. · Potato
Spriensma, O.
NL
4 records
Dominique
ActiveSolanum lycopersicum L. · Tomato
HAZERA GENETICS
ES
3 records
Deltapine 41
Protection expiredGossypium hirsutum L. · Upland cotton
DELTA&PINE LAND HOLDING
ES
3 records
Defensor
Activehybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Jean Winoc Hennart
FR
5 records
Darling
ActiveSolanum tuberosum L. · Potato
Danespo A/S
DK
4 records
Dancer
ActiveSolanum tuberosum L. · Potato
Teagasc Crops Research Department
IE
4 records
CPB-4475
ActiveHybrids between Citrus x aurantium L. x Citrus trifoliata L.
ES
3 records
Coyame
ActiveCapsicum annuum L. · Bell pepper
Bayer Holland B.V.
NL
5 records
Diabolik
ActiveSolanum lycopersicum L. · Tomato
Sakata Vegetables Europe S.A.S
FR
3 records
Desibelle
ActiveMedicago sativa L. · Alfalfa
RAGT 2N S.A.S
FR
4 records
Delux
ActiveAvena strigosa Schreb. · Black oat
PANAM FRANCE SARL, FR
FR
4 records
Columbia
ActiveSolanum tuberosum L. · Potato
Europlant Innovation GmbH & Co. KG
DE
5 records
Creativo
ActiveSolanum lycopersicum L. · Tomato
HM.Clause S.A.S.
FR
4 records
Dedalo
ActiveOryza sativa L. · Rice
ENTE NAZIONALE RISI
IT
3 records