Diseases

Tissue necrosis

Alternaria cucumerina, Leptosphaeria maculans, Nectria cinnabarina, Rhacodiella vitis, Pseudomonas syringae, Pseudomonas corrugata, Beet necrotic yellow vein virus, Prunus necrotic ringspot

Necrosis is a pathological process of plant tissue death caused by infectious agents (fungi, bacteria, viruses) or non-infectious environmental factors. It is characterized by localized damage that can lead to the loss of a significant portion of the crop or the plant itself.

Mentioned in descriptions 2 111 varieties reference book.

Necrosis manifests as tissue death, visually expressed as spotting, lesions on fruits and shoots, and the death of bark, cambium, and the vascular system. Cracks may form on affected areas, gummosis can be observed in stone fruit crops, or specific fungal sporulation may appear in the form of tubercles and pustules.

The development of the process depends both on the presence of an infectious source and on environmental conditions, including humidity and sharp temperature fluctuations that cause frost cracks or sunburn. Mechanical damage often serves as an entry point for infection, which persists in plant debris, soil, or planting material.

Varietal resistance is based on anatomical features, such as bark strength, which can limit pathogen penetration, or the plant's ability to rapidly form a protective callus layer around the damaged zone. Resistance evaluation in variety trials is conducted using scales of disease intensity under conditions of artificial or natural infection.

The concept of necrosis resistance in crop production always requires specification of the particular pathogen, as immunity to the pathological process as a whole does not exist. When selecting a variety, one should prioritize documented resistance to pathogen species relevant to the region, as indicated in the originator's data or the state register.

Sources10

Breakdown by crop

Lettuce tissue necrosis 424 Melon tissue necrosis 73 Tomato Pith Necrosis 48 Tissue Necrosis in White Cabbage 38 Potato tissue necrosis 18 Endive tissue necrosis 14 Tissue necrosis — Chinese cabbage 12 Apple tissue necrosis 12 Grapevine tissue necrosis 9 Tissue necrosis — red cabbage 8 Tissue necrosis in lettuce 8 Tissue necrosis — soft wheat 6 Tissue necrosis — cauliflower 5 Cucumber tissue necrosis 5 Sunflower tissue necrosis 4 Tobacco tissue necrosis 4 Bean tissue necrosis 4 Sweet Cherry Tissue Necrosis 4 Tulip Tissue Necrosis 4 Chrysanthemum stem necrosis 4 Pepper tissue necrosis 4 Maize Tissue Necrosis 3 Lily tissue necrosis 3 Apricot Tissue Necrosis 3

Found in these crops

Lettuce 293 Tomato 41 White cabbage 30 Potato 21 Grapevine 18 Endive 11 Common grape vine 10 Napa cabbage 8 Leaf lettuce 7 Common bean 6 Red cabbage 6 Bread wheat 6

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.

Argentinas

Active

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

9 records

Saula

Active

Lactuca sativa L. · Lettuce

Enza Zaden Beheer B.V.

8 records

Korbi

Active

Active

Lactuca sativa L. · Lettuce

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

7 records

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.