El Sol
ActiveLactuca sativa L. · Lettuce
Nunhems, NL
NL
12 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.
Triplex
ActiveLactuca sativa L. · Lettuce
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
NL
12 records
Barlach
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
12 records
Gaugin
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
HR
NL
12 records
Argentinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
HR
NL
9 records
Expertise
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Crunchita
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V, Rijk Zwaan Lettuce Breeding department
NL
9 records
Auvona
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Sementel
ActiveLactuca sativa L. · Lettuce
Bejo Zaden, NL
NL
8 records
Ice Wave
ActiveLactuca sativa L. · Lettuce
ZONNEVELD OLAF
NL
12 records
Experience
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Matador
ActiveLactuca sativa L. · Lettuce
ISI SEMENTI SPA
FR
NL
6 records
Lagunas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
ES
NL
7 records
Fiorette
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
HR
NL
7 records
Explore
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V. (NL)
HR
NL
9 records
Wintex
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
9 records
Saula
ActiveLactuca sativa L. · Lettuce
Enza Zaden Beheer B.V.
NL
8 records
Izanas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Kiribati
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
FR
8 records
Ice Music
ActiveLactuca sativa L. · Lettuce
Syngenta UK Ltd
NL
9 records
Exam
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
10 records
Fortunas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
8 records
Cartagenas
ActiveLactuca sativa L. · Lettuce
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL BV
NL
9 records
Diamantinas
ActiveLactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
NL
9 records