Perlinio
TerminatedSolanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
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.
Oyin
ActiveSolanum lycopersicum L. · Tomato
NEZZALEZ, S.L.
ES
2 records
Pallina
TerminatedSolanum tuberosum L. · Potato
Hermann Bodendörfer / Dr. L. Simon
DE
4 records
Ottymo
ActiveSolanum lycopersicum L. · Tomato
Vilmorin-Mikado S.A.S.
FR
3 records
Otex
ActiveAvena strigosa Schreb. · Black oat
P.H.PETERSEN SAATZUCHT LUNDSGAARD
IT
2 records
Pacov
TerminatedSolanum tuberosum L. · Potato
Selekta Pacov, a.s., CZ
CZ
3 records
Patriarca
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
4 records
Orsweety
Application submittedCapsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
NL
3 records
Orsorosso
ActiveSolanum lycopersicum L. · Tomato
HM Clause Inc (US)
FR
2 records
Ornela
ActiveSolanum lycopersicum L. · Tomato
HAZERA GENETICS
ES
2 records
Orange Moon
Application submittedSolanum lycopersicum L. · Tomato
HAZERA SEEDS BV
ES
2 records
Orinade
ActiveSolanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
FR
2 records
Optifort
Activehybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
De Ruiter Seeds NL B.V.
NL
3 records
Pakyta
ActiveSolanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
NL
4 records
Pannónia
ActiveSolanum tuberosum L. · Potato
Kohary Erzsebet / Kruppa Jozsef / Adamovics Peter / Molnar Istvanne
HU
3 records
P8805
TerminatedZea mays L. subsp. mays (Maize Group) · Maize
Pioneer Overseas Corporation US (USA)
HR
2 records
Odin
TerminatedPisum sativum L. · Pea
PRODANA SEED A/S - DLF SEEDS A/S
DK
3 records
Ofantus
ActiveSolanum lycopersicum L. · Tomato
Nunhems Netherlands B.V.
NL
4 records
Oberon
ActiveSolanum tuberosum L. · Potato
Hodowla Ziemniaka Zamarte sp. z o.o. - Grupa IHAR
PL
5 records
OAC Calypso
ActiveGlycine max (L.) Merr. · Soybean
Istvan Rajcan
UA
3 records
Osona
TerminatedTriticum aestivum L. · Bread wheat
IRTA (G. CATALUÑA)
ES
3 records
Octydia
TerminatedSolanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
FR
2 records
Octavio
TerminatedSolanum lycopersicum L. · Tomato
Graines Gautier SA (FR)
FR
3 records
Oria
ActiveSolanum lycopersicum L. · Tomato
SEMILLAS FITO, S.A.
ES
2 records