Cebrail
ActiveCapsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
NL
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.
Barrera
ActiveCapsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
NL
3 records
Annico Sense
Application submittedSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Asterius
ActiveSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
3 records
Mayan Queen
TerminatedSolanum tuberosum L. · Potato
SCOTTISH CROP RESEARCH INSTITUTE
99 Richter
ActiveVitis L. · Grapevine
INCONNU (FR)
FR
2 records
Zambra
ActiveSolanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
ES
2 records
Zayda
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
3 records
Zucchello
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
3 records
Zapata
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Strube, D
DE
2 records
Żagiel
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
6 records
Zaipime
Activehybrids between Prunus salicina Lindl. and Prunus persica (L.) Batsch
Floyd Zaiger (US)
FR
2 records
Zapateco
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
2 records
Ysalis
ActiveSolanum tuberosum L. · Potato
Grocep S.I.C.A.
FR
3 records
Yolita
TerminatedSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
4 records
Zaydin
TerminatedSolanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
ES
2 records
Yasser
ActiveCapsicum annuum L. · Bell pepper
HM.Clause S.A.S.
FR
2 records
Yanira
TerminatedSolanum lycopersicum L. · Tomato
WESTERN SEED ESPAÑA, S.A.
ES
2 records
Xolatyl
ActiveSolanum lycopersicum L. · Tomato
Axia NL B.V.
NL
3 records
Xylora
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Zeta
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
3 records
Yamato
ActiveCapsicum annuum L. · Bell pepper
Syngenta Crop Protection AG
NL
2 records
Xavy
ActiveSolanum lycopersicum L. · Tomato
Axia Vegetable Seeds B.V.
NL
3 records
Xavy XR
ActiveSolanum lycopersicum L. · Tomato
Axia NL B.V.
NL
4 records