Diseases
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.
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.
Solanum lycopersicum L. · Tomato
Zamytska Tetiana Mykolaivna, Kuts Oleksandr Volodymyrovych, Mykhailyn Volodymyr Ihorevych, Kondratenko Serhii Ivanovych, Samovol Oleksii Petrovych,
Solanum lycopersicum L. · Tomato
Moshe Zalsman
Solanum lycopersicum L. · Tomato
Harmoniz
Prunus persica (L.) Batsch · Peach
INCONNU (FR)
Solanum lycopersicum L. · Tomato
Manier Tohumculuk
Solanum lycopersicum L. · Tomato
PETOSEED CO
Prunus persica (L.) Batsch · Peach
GAEC des Pepinieres Gromolard (FR)
Solanum lycopersicum L. · Tomato
BHN SEED RESEARCH
Prunus persica (L.) Batsch · Peach
Dufour Andre (FR)
Prunus persica (L.) Batsch · Peach
GAEC des Pepinieres Gromolard (FR)
Prunus persica (L.) Batsch · Peach
Smykov Volodymyr Karpovych, Oriekhova Valentyna Petrivna, Perfil`ieva Zoia Mykolaivna, Smykov Anatolii Volodymyrovych,
Prunus persica (L.) Batsch · Peach
F.ZAIGER
Prunus persica (L.) Batsch var. nucipersica (Suckow) C. K. Schneid. · Nectarine
Latsko Tetiana Anatoliivna, Shoferistov IEvheniia Hryhorivna, Shoferistov IEvhenii Petrovych,
Solanum lycopersicum L. · Tomato
HAZERA SEEDS BV
Solanum lycopersicum L. · Tomato
J. Hoogstarten
Solanum lycopersicum L. · Tomato
P. de Vries
Prunus persica (L.) Batsch · Peach
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Solanum lycopersicum L. var. lycopersicum · Tomato
LAMBOSEEDS S.R.L.
Solanum lycopersicum L. · Tomato
Gautier Semences SAS (FR)
Solanum lycopersicum L. · Tomato
Jean Clause Mercier
Solanum lycopersicum L. var. lycopersicum · Tomato
ISI SEMENTI SPA
Prunus persica (L.) Batsch · Peach
INCONNU (FR)
Solanum lycopersicum L. · Tomato
HAZERA SEEDS BV
Solanum lycopersicum L. · Tomato
NEZZALEZ, S.L.