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 Melon 6 Nectarine 6 Bell pepper 5 hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner 4 Almond 4 Upland cotton 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.

Botero

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

ISI SEMENTI SPA

1 record

BRACO

Application submitted

Solanum lycopersicum L. · Tomato

ZENITH SEMILLAS, S.L.

1 record

Bon Avida

Application submitted

Solanum lycopersicum L. · Tomato

KWS VEGETABLES B.V.

1 record

BOLUDO PS

Terminated

Solanum lycopersicum L. · Tomato

Seminis Vegetable Seeds

1 record

Calista F1

Application submitted

Solanum lycopersicum L. · Tomato

Moshe Zalsman

2 records

Bravet

Application submitted

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

2 records

Belle Impériale

Protection expired

Prunus persica (L.) Batsch · Peach

INCONNU (FR)

1 record

BERLANGA

Application submitted

Cucurbita pepo L. · Field pumpkin

MERIDIEM SEEDS S.L.

1 record

Belmontyno

Application submitted

Solanum lycopersicum L. · Tomato

Gautier Semences SAS (FR)

1 record

Banderas

Terminated

Solanum lycopersicum L. · Tomato

Dong-Wook Cho

4 records

ALUVIÓN

Application submitted

Solanum lycopersicum L. · Tomato

IBEROSEEDS COMPAÑIA IBERICA DE SEMILLAS, S.L.

2 records

Ariela

Terminated

Solanum lycopersicum L. · Tomato

Hazera Genetics Ltd (IL)

1 record

Andup

Terminated

Prunus persica (L.) Batsch · Peach

Frederic W. Anderson (US)

1 record

72-761

Terminated

Solanum lycopersicum L. · Tomato

Kees Reinink

2 records

Alexsia F1

Terminated

Solanum lycopersicum L. · Tomato

J. Hoogstarten

2 records

ALEXIA

Active

Prunus persica (L.) Batsch · Peach

IVASCU ANTONIA

1 record

03560 TOF

Active

Solanum lycopersicum L. · Tomato

Nunhems B.V.

2 records

73-PL2159

Active

Solanum lycopersicum L. · Tomato

Maarten Verlaan

2 records

76258

Active

Solanum lycopersicum L. var. lycopersicum · Tomato

NIRIT SEEDS

1 record

73-602

Terminated

Solanum lycopersicum L. · Tomato

RIJK ZWAAN Zaadteelt en Zaadhandel B.V.

1 record

114SA808

Withdrawn

Solanum lycopersicum L. var. lycopersicum · Tomato

S.A.I.S. Societa Agricola Italiana Sementi

1 record

Ichigo

Active

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

1 record

UPR 1

Active

Prunus persica (L.) Batsch · Peach

Jörg Büttner

1 record

Red Heaven

Active

Prunus persica (L.) Batsch · Peach

3 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.