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 Curly kale 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.

Santorino

Active

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

2 records

Satyna

Terminated

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

2 records

Santa Victoria

Active

Solanum lycopersicum L. · Tomato

Sakata Seed Corporation, JP

2 records

Saneh

Terminated

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)

4 records

Santy Yellow

Active

Solanum lycopersicum L. · Tomato

Enza Zaden Beheer B.V.

3 records

Sakhiya

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Saladoro

Active

Solanum lycopersicum L. · Tomato

VANDERLEI VARISI

2 records

Ruano

Active

Solanum lycopersicum L. · Tomato

MERIDIEM SEEDS S.L.

2 records

Rychka

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Sartylia

Terminated

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

3 records

Santy Naranja

Active

Solanum lycopersicum L. · Tomato

Enza Zaden Beheer B.V.

3 records

Roxabel

Active

Solanum lycopersicum L. · Tomato

Syngenta Crop Protection AG

4 records

Rozy

Active

Solanum lycopersicum L. · Tomato

HAZERA SEEDS BV

2 records

Rouven

Active

Solanum lycopersicum L. · Tomato

agro- Tip Handels-u. Consultingges. mbH

2 records

Sampras

Active

Solanum lycopersicum L. · Tomato

INTERSEMILLAS SAU

2 records

Rodolita

Active

Solanum lycopersicum L. · Tomato

HAZERA SEEDS BV

3 records

Rocasol

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Rodelinda

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

NIRIT SEEDS

2 records

Ricosol

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

3 records

Resolute

Active

Solanum lycopersicum L. · Tomato

Bejo Zaden B.V.

3 records

Rosende

Active

Solanum lycopersicum L. · Tomato

INTERSEMILLAS SAU

2 records

Rosalie

Active

Solanum lycopersicum L. · Tomato

HAZERA GENETICS

2 records

Rioalto

Terminated

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

Resisdom

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

4 records

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Diseases

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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.