Daivion
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
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.
CXD 142
ActiveSolanum lycopersicum L. · Tomato
HM Clause Inc (US)
FR
3 records
Contygo
ActiveSolanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
FR
3 records
Cyclade
ActiveSolanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
FR
2 records
Columbia
Protection expiredHordeum vulgare L. · Barley
Western Plant Breeders Inc.
ES
2 records
Comoros
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Crokini
ActiveSolanum lycopersicum L. · Tomato
HM.Clause S.A.S.
NL
3 records
Daytona
Protection expiredSolanum lycopersicum L. · Tomato
Hybrids Ellas Abee
GR
2 records
Codex
ActiveAvena strigosa Schreb. · Black oat
P.H. Petersen Saatzucht Lundsgaard GmbH Herrn Asmus Sören Petersen / Michaela Schlathölter
DE
3 records
Crimson Star
ActiveSolanum lycopersicum L. · Tomato
Sakata Seed Corporation (SCC)^^^Sakata Vegetables Europe S.A.S.
NL
3 records
Dask
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
4 records
Coronel
ActiveSolanum lycopersicum L. var. lycopersicum · Tomato
ISI SEMENTI SPA
IT
2 records
Datler
TerminatedCapsicum annuum L. · Bell pepper
INIA-OTRI
ES
2 records
Comendador
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Clarosa
ActiveSolanum lycopersicum L. · Tomato
HM.Clause S.A.S.
FR
3 records
Daïquiri
TerminatedSolanum lycopersicum L. · Tomato
Vilmorin SA (FR)
FR
2 records
Chumbito
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Conan
ActiveSolanum torvum Sw. · Turkey berry
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
2 records
Cuarzyta
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Cyprian
TerminatedSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
4 records
Clarina
TerminatedSolanum tuberosum L. · Potato
Heinrich Böhm^^^SCHUCHMANN R.
DE
4 records
Citronnier
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE NV-SA, BE
FR
2 records
Chantus
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Cencara
ActiveSolanum lycopersicum L. · Tomato
Vilmorin-Mikado S.A.S.
FR
4 records