Ramsey
ActiveVitis L. · Grapevine
FR
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.
Robusto
ActiveCapsicum annuum L. · Bell pepper
NL
4 records
Borowska
ActiveSinapis alba L. · White mustard
PL
4 records
Julischka KWS
ActiveBeta vulgaris L. · Beet
KWS SAAT SE & CO.KGAA
AT
SK
3 records
Faustine
TerminatedSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
FR
PL
3 records
Yucatan
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE, N.V./S.A.
CZ
ES
3 records
Sanpavel
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
UA
4 records
BTS 3480 N
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Betaseed
BE
NL
3 records
Vénusz Gold
Protection expiredSolanum tuberosum L. · Potato
University of Pannonia,Potato Research Centre (HU)
HR
HU
3 records
Massima
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
FR
IT
3 records
Redix
ActiveSolanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
NL
UA
3 records
Royalpink
ActiveSolanum lycopersicum L. · Tomato
Kees Konst
NL
UA
4 records
Piccodona
ActiveSolanum lycopersicum L. · Tomato
Syngenta Crop Protection AG
NL
UA
5 records
Myrtille
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE, N.V./S.A.
ES
FR
3 records
BTS Smart 3830 N
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Betaseed
CZ
IT
3 records
Manatee Smart
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE N.V./S.A.
IT
UA
3 records
Karta
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Syngenta Crop Protection AG
BE
ES
4 records
Itiro
ActiveSolanum lycopersicum L. · Tomato
Shevchenko Igor
BG
UA
5 records
Anna Rosa
ActiveSolanum tuberosum L. · Potato
SIPRE
NL
UA
4 records
Estelle
ActiveSolanum tuberosum L. · Potato
Lantmõnnen Seed B.V.
DE
NL
5 records
Aphen
ActiveSolanum lycopersicum L. · Tomato
Michael Edwin Kuenh
FR
UA
4 records
BTS Smart 5935 N
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Betaseed
CZ
IT
3 records
Amore
TerminatedSolanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
ES
NL
3 records
Syncro
Protection expiredBeta vulgaris Sugar Beet Group · Sugar beet
Syngenta Seeds
DE
FR
3 records