Smilla
ActiveSolanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
DE
3 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.
SI204
ActiveSolanum tuberosum L. · Potato
SIPRE (FR)
FR
3 records
Shintosa
ActiveCucurbita maxima Duchesne x Cucurbita moschata Duchesne
Paul Degreef
UA
2 records
Shield
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
2 records
Shintoza
ActiveCucurbita maxima Duchesne x Cucurbita moschata Duchesne
INTERSEMILLAS SAU
ES
2 records
SIBERIAN - C
Activehybrids between Prunus davidiana and Prunus persica
ES
2 records
Siurion
Application submittedSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
3 records
Simenia
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
DE
2 records
Shooter
ActiveAvena sativa L. · Oat
Oregro Seeds
PT
2 records
Serket
ActiveCapsicum annuum L. · Bell pepper
HM.Clause S.A.S.
FR
3 records
Silex
Activehybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
SEMILLAS FITO, S.A.
ES
2 records
Sempre
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
3 records
Sd7003
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
4 records
Sixtus
ActiveSolanum tuberosum L. · Potato
Niederösterreichische Saatbaugenossenschaft reg.Gen.m.b.H.
AT
3 records
Serengheti
ActiveSolanum lycopersicum L. · Tomato
HM Clause Inc (US)
FR
2 records
Shaquil
TerminatedSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Senalda
ActiveSolanum lycopersicum L. · Tomato
HAZERA SEEDS BV
ES
3 records
Scialari
TerminatedSolanum lycopersicum L. · Tomato
Vilmorin SA (FR)
FR
2 records
Seration
ActiveSolanum lycopersicum L. · Tomato
Nunhems B.V.
NL
3 records
Scarlet Star
ActiveSolanum lycopersicum L. · Tomato
Sakata Seed Corporation (SCC)
NL
3 records
Shourouq
ActiveSolanum lycopersicum L. · Tomato
Bayer Holland B.V.
NL
2 records
Santyplum
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Santorino
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
2 records
Sarra
ActiveSolanum lycopersicum L. · Tomato
HM.CLAUSE
UA
3 records