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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 Sweet cherry 3 Plum 3 Prunus cerasifera x Prunus domestica 2 Prunus x fruticans Weihe 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.

Topstar

Active

Prunus domestica L. · European plum

DE
3 records

Sulmona

Active

Prunus armeniaca L. · Apricot

RO
2 records

Stanley

Active

Prunus domestica L. subsp. insititia (L.) C. K. Schneid. · Damson

NL
3 records

Topking

Active

Prunus domestica L. · European plum

DE
5 records

Top

Active

Prunus domestica L. · European plum

DE
3 records

Timočanka

Active

Malus domestica (Suckow) Borkh. · Apple

SI
3 records

Roxana

Active

Prunus armeniaca L. · Apricot

HU
2 records

Romanța

Active

Prunus domestica L. · European plum

RO
3 records

Siberian C

Active

Prunus persica (L.) Batsch · Peach

PL
4 records

Simona

Active

Prunus domestica L. · European plum

CZ
8 records

MITGER

Active

Prunus armeniaca L. · Apricot

ES
2 records

Marlen

Active

Prunus armeniaca L. · Apricot

CZ
4 records

Nora

Active

Prunus armeniaca L. · Apricot

CZ
7 records

Miroval

Active

Prunus domestica L. · European plum

RO
2 records

Minaret

Active

Prunus armeniaca L. · Apricot

CZ
4 records

Milenium

Active

Prunus domestica L. · European plum

RO
3 records

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