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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.

Sources10

Breakdown by crop

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.

Pink Girl F1

Terminated

Solanum lycopersicum L. · Tomato

Hari Besels

UA
1 record

Solanum lycopersicum L. · Tomato

Il Yong Kim

UA
2 records

Pink Drim

Terminated

Solanum lycopersicum L. · Tomato

Naumov Ruslan Olehovych, Krasniuk Viacheslav Anatoliiovych,

UA
2 records

Platus F1

Terminated

Solanum lycopersicum L. · Tomato

Maren Shutte, Ad Barten,

UA
1 record

Platon F1

Terminated

Solanum lycopersicum L. · Tomato

Francisco Avila

UA
2 records

Pavelsko

Active

Solanum tuberosum L. · Potato

E. Nacheva, G. Pevicharova, V. Petkova, H. Samaliev

BG
2 records

Perlyna Polissia

Application submitted

Solanum tuberosum L. · Potato

Vasyl`chenko Olena Volodymyrivna, Prykhod`ko Olesia Hryhorivna, Zhelezniak Kostiantyn Vasyl`ovych, Ponomarenko Mariia Mykolaivna, Onyschenko Oleh Fedorovych, Haistruk Hennadii Viktorovych, Shkurko Ihor Viktorovych

UA
2 records

PIROLA

Terminated

Solanum tuberosum L. · Potato

NORDOSBAYERISCHER (DE)

FR
1 record

Solanum lycopersicum L. · Tomato

Aleksieiev IUrii Borysovych

UA
2 records

Palitra

Terminated

Solanum tuberosum L. · Potato

Riazantsev Vasyl` Borysovych, Voitseshyna Nataliia Ivanivna, Mel`nyk Pavlo Oleksandrovych, Razkevych Mykola Pylypovych, Ostrenko Mykhailo Volodymyrovych, Taktaiev Borys Anatoliiovych, Osypchuk Alla Andriivna, Podhaiets`kyi Anatolii Adamovych, Nazar Stefan

UA
2 records

Prunus persica (L.) Batsch · Peach

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

FR
1 record

Patronax

Active

hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner

Axia Vegetable Seeds B.V.

NL
1 record

PAVES

Application submitted

Capsicum annuum L. · Bell pepper

RAMIRO ARNEDO, S.A.

ES
1 record

Odrzański ZIF

Terminated

Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

PL
1 record

Solanum lycopersicum L. · Tomato

Sylvasn Bontems

UA
2 records

OFRI

Withdrawn

Solanum lycopersicum L. · Tomato

HAZERA GENETICS

ES
1 record

Orient

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

KUTNOWSKA HODOWLA BURAKA CUKROWEGO Sp.z o.o.

PL
1 record

Niwena

Terminated

Solanum lycopersicum L. · Tomato

Produkcja i Hodowla Roslin Ogrodniczych Krzeszowice sp. z o.o.

PL
1 record

Oliver

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

S.A.I.S. Societa Agricola Italiana Sementi

IT
1 record

Nematic

Withdrawn

Beta vulgaris Sugar Beet Group · Sugar beet

DLF Seeds A/S

PL
2 records

Obrii

Terminated

Solanum tuberosum L. · Potato

Sheremet Nina Larionivna, Haiduk Petro Pavlovych, Osypchuk Andrii Antonovych, Tereschenko Oleksandr Ivanovych, Nazar Stefaniia Hryhorivna, Zhyhailo Iosyp Ivanovych, Koval` Nataliia Demianivna, Serhiienko Viktoriia Mykhailivna, Hladka Rehina Mykhailivna, S

UA
2 records

NEMA-1200

Terminated

Solanum lycopersicum L. · Tomato

PETOSEED CO

ES
1 record

Solanum tuberosum L. · Potato

Siharova Dina Dmytrivna, Sobran Ivan Vasyl`ovych, Tomash Anatolii Ivanovych, Borivs`kyi Anatolii Frantsovych, Cherednychenko Liubov Mykolaivna, Taktaiev Borys Anatoliiovych, Nazar Stefaniia Hryhorivna, Osypchuk Alla Andriivna, Furdyha Mykola Mykolaiovych,

UA
2 records

Netun

Terminated

Medicago sativa L. · Alfalfa

Hagberg, Arne

SE
2 records

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