Kenita
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Diseases
Lettuce tissue necrosis
Lactuca sativa L.
Tissue necrosis in lettuce is a symptom complex caused by infectious pathogens (fungi, viruses, bacteria) as well as physiological stresses or genetic incompatibility during hybridization.
In the reference 424 varieties crop Lettuce, where this is mentioned in the description.
Infectious causes of necrosis include Fusarium wilt, caused by the fungus Fusarium oxysporum f. sp. lactucae (accompanied by vascular and root necrosis), viral infections such as LNYV or INSV, and bacterial leaf spot caused by Xanthomonas vitians. Root rots, provoked by Pythium spp., lead to secondary tissue necrosis due to disruption of plant nutrition.
Physiological necrosis develops independently of pathogens under the influence of high temperatures, water deficit, and mechanical damage, leading to the death of parenchyma cells. Genetically determined necrosis can also occur as a result of an autoimmune reaction due to the incompatibility of NLR gene alleles in seedlings.
Resistance to necrotic lesions caused by pathogens is genetically controlled: monogenic resistance has been described for protection against Fusarium oxysporum, and for protection against the INSV virus, quantitative trait loci (QTLs) have been identified, such as qINSV2.1, localized on the second chromosome.
General information about the subject — on the page Tissue necrosis.
Varieties of Lettuce mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Keyro
Application submittedLactuca sativa L. · Lettuce
Enza Zaden Seed Operations B.V.
NL
4 records
Kiley
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Golia
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
5 records
Gustinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Farinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Extremo
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
5 records
Evionas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V., Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Elicio
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Donertie
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Edwige
WithdrawnLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
4 records
Deangelia
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Coverus
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Corianas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Casonas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Carvello
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan BV, NL-2678 ZG De Lier
NL
3 records
Classio
ActiveLactuca sativa L. · Lettuce
Syngenta Crop Protection AG
NL
6 records
Carasco
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Cassenas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
6 records
Calibai
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
4 records
Bodilique
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Brondinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Beronas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records
Aubine
TerminatedLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
5 records