Sayakomachi
ActiveGlycine max (L.) Merr. · Soybean
SNOW BRAND SEED CO.LTD
IT
5 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.
Saloon
ActiveSinapis alba L. · White mustard
J.J.M. Hendrickx c/o Advanta Seeds B.V.
DE
5 records
Sanaterra
Activehybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
TAKII and CO LTD
NL
6 records
Rubin
ActiveSolanum tuberosum L. · Potato
RUP «NAUCHNO - PRAKTICHESKIJ CZENTR NACZIONALNOJ AKADEMII NAUK BELARUSI PO KARTOFELEVODSTVU I PLODOOVOSHHEVODSTVU»
DE
7 records
Roslin
ActiveSolanum tuberosum L. · Potato
Jacob Heidemans
NL
7 records
Romietto
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Rocal
ActiveCapsicum annuum L. · Bell pepper
ESASEM SPA
IT
4 records
Romantica
ActiveSolanum tuberosum L. · Potato
Austinus Jansen
NL
8 records
Regresso
Protection expiredRaphanus sativus L. var. oleiformis Pers. · Oil radish
KWS SAAT SE and CO KGAA
DE
5 records
Resolution
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
Andreas Gertz
DE
5 records
RGT Cybelle
ActiveMedicago sativa L. · Alfalfa
RAGT 2N S.A.S
FR
6 records
Reine
ActiveSolanum tuberosum L. · Potato
Bretagne-Plants S.C.I.C.A.
FR
6 records
Rivola
ActiveSolanum tuberosum L. · Potato
Den Hartigh BV
NL
6 records
Rexx
ActiveSinapis alba L. · White mustard
Lammers Seed Options B.V.
DE
5 records
Revolver
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
KWS SAAT SE & CO.KGAA
DE
6 records
Qualitet
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds, NL
NL
4 records
Pirat
ActiveSinapis alba L. · White mustard
LAMMERS SEED OPTIONS
DE
4 records
Paulonas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Painita
ActiveCapsicum annuum L. · Bell pepper
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Pendragon
ActiveSolanum lycopersicum L. · Tomato
Zohar Gar
ES
5 records
Orca
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
Michiel E. de Vries c/o Joordens' Zaadhandel B.V.
DE
5 records
Panekra
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds, NL
NL
5 records
Parisetto
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
7 records
Orizaba
ActiveCapsicum annuum L. · Bell pepper
Ken Owens.
FR
6 records