Diseases

Plum Pox (Sharka)

Plum pox virus

Plum pox (Sharka) is an incurable quarantine viral disease of stone fruit crops, leading to crop loss and fruit degradation. The disease manifests as chlorotic spots on leaves, necrosis on fruits, and premature fruit drop.

Mentioned in descriptions 1 410 varieties reference book.

Symptoms of the disease become noticeable 3–4 weeks after flowering. Characteristic chlorotic spots, rings, or arcs appear on the leaves, which are clearly visible when backlit. Sunken spots and streaks form on the fruits, often accompanied by tissue necrosis, flesh hardening, gum exudation, and loss of flavor, rendering the produce unsuitable for sale.

Virus development depends on the activity of vectors, which are aphids, and environmental conditions: at temperatures above +20…+25°C, symptoms on the leaves are often masked, complicating visual diagnosis. The virus affects a wide range of species of the genus Prunus and is spread primarily through infected planting material, causing crop losses from 10% to 100%.

Evaluation of variety resistance during trials is based on screening under artificial infection conditions and the use of ELISA and PCR methods. In breeding, a distinction is made between resistance, as the ability to withstand infection or limit virus development, and tolerance, which allows a variety to maintain productivity when infected without showing pronounced signs of damage on the fruits.

Sources10

Breakdown by crop

Plum Pox 178 Plum Pox of Apricot 145 Plum Pox on Peach 64 Plum Pox 8 Plum Pox on Cherry Plum 7 Plum Pox (Sharka) 6 Plum Pox (Sharka) — bullace, damson, mirabelle 6 Plum pox on sweet cherry 3

Found in these crops

European plum 210 Apricot 168 Peach 71 Plum 10 American plum 8 Cherry plum 7 Damson 6 Japanese plum 5 Plum 3 Sweet cherry 3 Prunus cerasifera x Prunus domestica 2 Apple 1

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.

Hoh 8679

Application submitted

Prunus domestica L. · European plum

Walter Hartmann

1 record

Hoh 7286

Application submitted

Prunus domestica L. · European plum

Walter Hartmann

1 record

Habella

Terminated

Prunus domestica L. · European plum

DR WALTER HARTMANN

1 record

Application submitted

Active

Prunus domestica L. · European plum

1 record

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Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

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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.