Diseases

Powdery mildew

Erysiphales

Powdery mildew is a fungal disease manifesting as a white web-like coating on plant organs, leading to tissue necrosis, fruit deformation, and significant crop losses.

Mentioned in descriptions 33 570 varieties reference book.

Powdery mildew is caused by ectoparasitic fungi of the order Erysiphales, which develop primarily on the surface of leaves, shoots, and fruits. The initial white web-like coating eventually densifies into "powdery" cushions, upon which fungal fruiting bodies may form as dark spots. As a result of the infection, tissues turn yellow and become necrotic, fruits may crack, and leaves drop prematurely.

The intensity of disease development depends on a complex of factors: high relative humidity, moderate temperatures, the presence of dense canopy, and excessive nitrogen nutrition. Risks increase with alternating dry and wet weather. The harmfulness of the disease is expressed in a reduction of the leaf assimilation area, deterioration of crop quality, and a decrease in the general winter hardiness of crops.

Assessment of variety resistance is conducted under field conditions at various stages of vegetation, most often during the full heading phase. To classify the degree of infection, scoring systems or intensity scales in percentages are used, where varieties with up to 10% infection are considered highly resistant (R), 11 to 40% as moderately resistant (M), and more than 41% as susceptible (S). Variety resistance is ensured by genetic mechanisms that prevent colonization by the pathogen or limit the development of its mycelium.

Sources10

Breakdown by crop

Powdery Mildew of Soft Wheat 1 157 Apple Powdery Mildew 1 127 Powdery mildew of cucumber 1 031 Powdery mildew of rose 785 Powdery Mildew of Barley 758 Powdery mildew of melon 670 Tomato powdery mildew 351 Powdery mildew of zucchini 333 Powdery mildew of strawberry 281 Powdery mildew of pea 268 Powdery mildew of triticale 241 Powdery mildew of lettuce 231 Powdery mildew — sugar beet 186 Powdery mildew of pepper 185 Gooseberry powdery mildew 176 Powdery mildew of oats 176 Apple powdery mildew 153 Powdery mildew — durum wheat 151 Powdery Mildew of Black Currant 143 Grape Powdery Mildew 110 Peach Powdery Mildew 81 Powdery mildew of rye 76 Powdery Mildew of Bigleaf Hydrangea 73 Verbena powdery mildew 69

Found in these crops

Bread wheat 1 186 Apple 1 130 Cucumber 1 080 Grapevine 980 Rose 785 Barley 762 Melon 681 Common grape vine 512 Tomato 361 Field pumpkin 335 Garden strawberry 280 Pea 279

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.

Zhaivoronok kharkivs'kyi

Active

x Triticosecale Wittm. ex A. Camus · Triticale

2 records

Vivat

Active

Hordeum vulgare L. · Barley

DONTSOVA ALEKSANDRA ALEKSANDROVNA / DONTSOV DMITRIJ PETROVICh / ROMANYuKIN ALEKSANDR EGOROVICh / TERNOVAYa ELENA ALEKSANDROVNA / IGNAT'EVA NATAL'Ya GENNAD'EVNA / ShIShKIN NIKOLAJ VASIL'EVICh / YaNKOVSKIJ NIKOLAJ GRIGOR'EVICh / FILIPPOV EVGENIJ GRIGOR'EVIC

4 records

Yaskravyi

Active

Triticum durum Desf. · Durum wheat

Nesterova Natalia Havrylivna, Molodchenkova Olha Olehivna, Babaiants Olha Vadymivna, Rybalka Oleksandr Illich, Kozlov Viktor Volodymyrovych, Lytvynenko Mykola Antonovych, Albul Anatolii Oleksiiovych, Palamarchuk Anatolii Ivanovych,

3 records

YuNONA

Active

Triticum aestivum L. · Bread wheat

PUChKOV YuRIJ MIHAJLOVICh / NABOKOV GENNADIJ DMITRIEVICh / SOLYaREK TAISIYa FEDOROVNA / KUDRYaShOV IGOR' NIKOLAEVICh / BESPALOVA LYuDMILA ANDREEVNA / ALFIMOV VLADIMIR ALEKSEEVICh / FILOBOK LEONTIJ PETROVICh / BUKREEVA GALINA IVANOVNA / VASIL'EVA ANNA MIHA

4 records

Zadumka odes`ka

Active

Triticum aestivum L. · Bread wheat

Parfent`iev Mykhailo Hrhorovych, Babaiants Lazar Tihranovych, Reshetnikova Valentyna Semenivna, Maksymov Mykola Havrylovych, Kostiuk Stanislav Vasyl`ovych, Lytvynenko Raisa Ivanivna, Ptashenchuk Oleksandr Mykytovych, Honcharuk Nina Oleksandrivna, Lytvynen

3 records

YuMPA

Active

Triticum aestivum L. · Bread wheat

Vorob`ova Raisa Ahafonivna, Shurovenkova Liudmyla Ivanivna, Ablova Iryna Borysivna, Zynovkina Ol`ha Olenksandrivna, Soliarek Taisiia Fedorivna, Nabokov Henadii Dmytrovych, Puchkov IUrii Mykhailovych, Fomenko Nina Panteleivna, Kudriashov Ihor Mykolaiovych,

4 records

Vaiva

Active

Triticum aestivum L. · Bread wheat

Lietuvos agrarinių ir miškų mokslų centras

3 records

Vatazhok

Active

Triticum aestivum L. · Bread wheat

Babaiants Lazar Tihranovych, Rybalka Oleksandr Illich, Rodenko Halyna Anatoliivna, Nakonechnyi Mykola IUriiovych, Narhan Tetiana Pavlivna, Fedchenko Volodymyr Pavlovych, Yeryniak Mykola Ivanovych, Lyfenko Savelii Pylypovych,

3 records

Val`kiriia

Active

Hordeum vulgare L. · Barley

Stel`makh Adol`f Khomych, Sheremet Oleksandr Martynovych, Lehkun Ihor Borysovych, Linchevskyi Anatolii Adamovych,

3 records

Tendral EAN

Active

Cucumis melo L. · Melon

2 records

Tradytsiia odes`ka

Active

Triticum aestivum L. · Bread wheat

Parfentiev Mykhailo Hryhorovych, Babaiants Olha Vadymivna, Reshetnikova Valentyna Semenivna, Solomonov Ruslan V'iacheslavovych, Holub IEvheniia Anatoliivna, Maksymov Mykola Havrylovych, Rubakha Serhii Andriiovych, Lytvynenko Raisa Ivanivna, Honcharuk Nin

3 records

Stavento

Active

Triticum aestivum L. · Bread wheat

BALTZIS NIKOLAOS (GR)

2 records

Slavena

Active

Triticum aestivum L. · Bread wheat

Galya Katrandzhieva

2 records

Skorpion

Terminated

Triticum aestivum L. · Bread wheat

CROP RESEARCH INSTITUTE VYZKUMNY USTAV ROSTLINNE VYROBY, V.V.I.

3 records

SM Redstar

Active

Hordeum vulgare L. · Barley

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

3 records

Siwek

Terminated

Avena sativa L. · Oat

Malopolska Hodowla Roslin Spolka z o.o.

2 records

Saleroso

Active

x Triticosecale Wittm. ex A. Camus · Triticale

AGROVEGETAL, S.A.

3 records

Shliakhetnyi

Active

Triticum durum Desf. · Durum wheat

Nesterova Natalia Havrylivna, Molodchenkova Olha Olehivna, Babaiants Ol`ha Vadimovna, Rybalka Oleksandr Illich, Kozlov Viktor Volodymyrovych, Lytvynenko Mykola Antonovych, Albul Anatolii Oleksiiovych, Zaitsev Oleksii Borysovych,

3 records

RGT Furiosa

Active

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

3 records

Rachele

Active

Avena nuda L. · Naked oat

GENETIC SERVICES S.R.L.

2 records

PS Lubica

Active

Triticum aestivum subsp. aestivum x Triticum aestivum subsp. spelta

Národné Polnohospodárske a Potravinárske Centrum (NPPC)

2 records

Persona

Active

Triticum aestivum L. · Bread wheat

Poznanska Hodowla Roslin Sp. z o.o

4 records

Perlyna lisostepu

Active

Triticum aestivum L. · Bread wheat

Chaika Anatolii Mykolaiovych, Burdeniuk-Tarasevych Larysa Antonivna,

3 records

Paldin

Terminated

Hordeum vulgare L. · Barley

N. Ganusheva, G. Hristozova

2 records

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Diseases

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Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064
Grey mold 7 316

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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.