Candella
ActiveSolanum tuberosum L. · Potato
Saka Pflanzenzucht GmbH Co KG
DE
4 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.
Bravence
ActiveSolanum lycopersicum L. · Tomato
Marcio Pais de Arruda
FR
4 records
Bozak
TerminatedSolanum lycopersicum L. · Tomato
Enza Zaden Beheer B.V.
NL
5 records
Chamant
TerminatedHordeum vulgare L. · Barley
SEJET PLANTEFORÆDLING
DK
5 records
Capsifort
ActiveCapsicum annuum L. · Bell pepper
Bayer Holland B.V.
NL
5 records
Callum
Application submittedhybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Caledonian Pearl
ActiveSolanum tuberosum L. · Potato
CALEDONIA POTATO HOLDINGS LTD
IE
5 records
Bojana
ActiveSolanum tuberosum L. · Potato
NIEDEROESTERREICHISCHE SAATBAUGENOSSENSCHAFT
AT
4 records
Caledonian Rose
ActiveSolanum tuberosum L. · Potato
Old Fargie Potato Breeding Company
IE
5 records
Benvolietto
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Betty
ActiveSolanum tuberosum L. · Potato
Germicopa Breeding S.A.S
NL
8 records
Black Jack
Protection expiredRaphanus sativus L. var. oleiformis Pers. · Oil radish
LAMMERS SEED OPTIONS
DE
4 records
Buffalopink
ActiveSolanum lycopersicum L. · Tomato
Katarzyna Grabka
FR
5 records
BTS 755
ActiveBeta vulgaris Sugar Beet Group · Sugar beet
Betaseed
BE
3 records
Bellamaria
ActiveSolanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Big Rio
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
3 records
Bricata KWS
ActiveSolanum tuberosum L. · Potato
STET HOLLAND
NL
6 records
Big Beef Plus
ActiveSolanum lycopersicum L. · Tomato
Seminis Vegetable Seeds
NL
3 records
Brantley
Application submittedhybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Brixsol
ActiveSolanum lycopersicum L. · Tomato
UNITED GENETICS SEEDS CO
PT
4 records
Berosso
ActiveSolanum lycopersicum L. · Tomato
Blumen Group, I
HU
3 records
Bragançano
ActivePhaseolus vulgaris L. · Common bean
Rogerio Jesus Santos
PT
4 records
Bavatop
ActiveSolanum tuberosum L. · Potato
Bavaria Saat GbR
DE
5 records
Bildtstar
ActiveSolanum tuberosum L. · Potato
IPR B.V.
NL
3 records