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Diseases

Peach leaf curl

Taphrina deformans

Peach leaf curl is a dangerous stone fruit disease caused by the fungus Taphrina deformans. It manifests as blistering and deformation of leaves, shoots, and fruits, leading to mass defoliation and a yield loss of up to 80%.

Mentioned in descriptions 3 891 varieties reference book.

The disease affects peach, nectarine, apricot, and almond, appearing immediately after bud break. Blisters of a pale green, yellow, or scarlet red color form on the leaves, and a whitish waxy coating eventually appears on their undersides. Shoots thicken and become twisted, while affected fruits develop a smooth surface, become covered in cracks, and drop off.

Pathogen development depends on weather conditions: the critical infection period is a cool and humid spring with temperatures between +6 and +15°C. The fungus overwinters on the surface of branches, in bark crevices, and within bud scales. Upon the arrival of dry and hot weather with temperatures above +26°C, infection activity ceases.

The concept of complete resistance to the disease does not exist; however, varietal resistance is often linked to differences in bud break timing: late-maturing varieties are less likely to encounter the peak of pathogen activity. Resistance evaluation in variety testing is conducted visually using a point scale in collection orchards under comparative monitoring in identical conditions.

Sources10

Breakdown by crop

Tomato Leaf Curl 732 Peach leaf curl 283 Bean leaf curl 32 Squash Leaf Curl 24 Lettuce leaf curl 23 Tomato leaf curl 22 Cucumber leaf curl 19 Parsley leaf curl 12 Leaf curl — Kale 8 Pepper Leaf Curl 6 Peach leaf curl of nectarine 6 Curly Top — Sugar Beet 5 Melon Leaf Curl 4 Peach leaf curl of almond 4 Leaf curl — Savoy cabbage 4 Apricot leaf curl 3

Found in these crops

Tomato 942 Peach 280 Field pumpkin 33 Tomato 24 Cucumber 16 Lettuce 14 Nectarine 6 Melon 6 Bell pepper 5 hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner 4 Almond 4 Corn salad 3

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.

Azarbe

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Astrolabio

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Astro 5

Active

Prunus persica (L.) Batsch · Peach

IT
2 records

Bhomber

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Chocolina

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Almiraya

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Bukanito

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Bocamegra

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Big Boss

Active

Solanum lycopersicum L. · Tomato

HU
2 records

Benino

Active

Capsicum annuum L. · Bell pepper

NL
2 records

Atenyia

Active

Solanum lycopersicum L. · Tomato

NL
2 records

Ananasová

Active

Prunus armeniaca L. · Apricot

CZ
4 records

Avalon Pride

Active

Prunus persica (L.) Batsch · Peach

NL
4 records

Arsis

Terminated

Brassica oleracea L. (Curly kale Group) · Curly kale

NL
2 records

Alexsia

Terminated

Solanum lycopersicum L. · Tomato

NL
3 records

Aliblanca

Active

Prunus persica (L.) Batsch · Peach

IT
2 records

TOM GRAND

Active

Prunus persica (L.) Batsch · Peach

2 records

Mamie Ross

Active

Prunus persica (L.) Batsch · Peach

2 records

Armgold

Active

Prunus persica (L.) Batsch · Peach

2 records

Bonanza

Active

Prunus persica (L.) Batsch · Peach

3 records

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