Rosalin
ActiveSolanum lycopersicum L. · Tomato
Sakata Seed Corporation, JP
FR
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.
Vitis L. · Grapevine
INCONNU (FR)
FR
3 records
Romesa
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
PRZEDSIęBIORSTWO NASIENNE "ROLNAS" SP. Z O.O.
PL
4 records
Rissoletto
ActiveSolanum tuberosum L. · Potato
Semences Innovation Protection Recherche et Environnement (SIPRE) S.A.R.L. Unipersonnelle
NL
6 records
Rumpel
ActiveSolanum tuberosum L. · Potato
Pomorsko Mazurska Hodowla Ziemniaka Sp.z o.o. z siedziba w Strzekecinie
PL
4 records
Robusta
Protection expiredSolanum tuberosum L. · Potato
UNIPLANTA| Uniplanta - Saatzucht KG
DE
5 records
Rilana
ActiveSolanum tuberosum L. · Potato
Europlant Pflanzenzucht GmbH
DE
6 records
Respons
TerminatedHordeum vulgare L. · Barley
Sejet Planteforaedling I,S
DK
5 records
Residur KWS
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
Andreas Gertz
DE
4 records
Regent
ActiveSolanum lycopersicum L. var. lycopersicum · Tomato
ISI SEMENTI SPA
IT
3 records
Red machine
ActiveSolanum lycopersicum L. · Tomato
Vilmorin, F
FR
4 records
Retador
ActiveSolanum lycopersicum L. · Tomato
HM.CLAUSE
FR
5 records
Rashida KWS
TerminatedBeta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
DE
3 records
Reportage KWS
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
Andreas Gertz
DE
5 records
Queenita
ActiveSolanum lycopersicum L. · Tomato
Monsanto Vegetable IP Management B.V.
NL
4 records
Rathlin
Protection expiredSolanum tuberosum L. · Potato
J E COCKRAM
IE
4 records
Prestomech
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
3 records
Pr59n59
ActiveMedicago sativa L. · Alfalfa
PIONEER HI-BRED INTERNATIONAL
IT
5 records
Rara
ActiveRaphanus sativus L. var. oleiformis Pers. · Oil radish
J. Joordens' Zaadhandel B.V. Herrn P.J.H.G. Packbier
DE
4 records
Primarosa
ActiveSolanum tuberosum L. · Potato
Vesa Velhartice a.s.
CZ
4 records
Punto
TerminatedHordeum vulgare L. · Barley
Sejet Planteforaedling I,S
DK
5 records
Priam
ActiveSolanum tuberosum L. · Potato
Station de Recherche du Comité Nord G.I.E.
FR
4 records
Radena
ActiveSinapis alba L. · White mustard
PRZEDSIęBIORSTWO NASIENNE "ROLNAS" SP. Z O.O.
PL
4 records
Protector
ActiveCapsicum annuum L. · Bell pepper
UNITED GENETICS SEEDS CO
PT
3 records