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Diseases

Septoria leaf blotch

Septoria

Septoria leaf blotch is a complex fungal disease of cereal crops, manifesting as leaf and glume blotch, leading to tissue necrosis and yield reduction.

Mentioned in descriptions 4 644 varieties reference book.

The disease is caused by fungi of the genus Septoria and related species, which infect all above-ground parts of plants. Light beige or grey-brown spots form on leaves and stems, and black dots, known as pycnidia, develop on their surface over time. The disease is dangerous in temperate climates with high humidity and frequent rainfall.

Pathogen development depends on weather factors, particularly temperatures in the range of +15…+25 °C and air humidity above 80%. The disease leads to a reduction in the photosynthetic area, grain shriveling, and a decline in baking quality. The level of loss varies from 10–15% in normal years to 50% during epiphytotics.

Varietal resistance is divided into vertical, based on specific Stb genes, and horizontal, which is considered more long-lasting. Horizontal resistance is determined by morphological characteristics: cuticle density, pubescence, the presence of a waxy bloom, and lack of sensitivity to fungal toxins.

Resistance evaluation in variety trials is conducted using infectious-provocative backgrounds, visual assessment of the degree of infection, and laboratory methods, including molecular diagnostics. The obtained data are compared with reference indicators to determine the effectiveness of variety protection under specific conditions.

Sources10

Breakdown by crop

Found in these crops

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.

Triticum aestivum L. · Bread wheat

FLORIMOND DESPREZ VEUVE ET FILS

ES IT
2 records

Catalus

Terminated

Triticum aestivum L. · Bread wheat

Erhard Eher

UA
3 records

Bonadur

Terminated

Triticum durum Desf. · Durum wheat

Probstdorfer Saatzucht GmbH (AT)

AT FR
4 records

Aquilon

Protection expired

Triticum aestivum L. · Bread wheat

RAGT

ES FR
3 records

Triticum aestivum L. · Bread wheat

SEMILLAS BATLLE, S.A.

ES
3 records

x Triticosecale Wittm. ex A. Camus · Triticale

RAGT 2n

ES
3 records

Protano

Active

Triticum aestivum L. · Bread wheat

SEMILLAS BATLLE, S.A.

ES
3 records

LG Origen

Terminated

Triticum durum Desf. · Durum wheat

Limagrain Europe S.A.S

ES
3 records

Girisha

Active

Apium graveolens L. var. dulce (Mill.) Pers. · Celery

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
2 records

Triticum durum Desf. · Durum wheat

AGROVEGETAL, S.A.

ES
3 records

Zuch

Active

Avena sativa L. · Oat

Danko Hodowla Roslin Sp.z.o.o.

PL
3 records

Zira

Active

Triticum aestivum L. · Bread wheat

Morschads`ka Ol`ha Stepanivna, Yavdoshcenko Mykola Petrovych, Babich IUrii Valentynovych, Postryhan` Viktor Fedorovych, Romanenko Vasyl` Ivanovych,

UA
2 records

Triticum aestivum L. · Bread wheat

Ihnatovskyi Oleksandr Oleksandrovych, Alieksieienko IEvhenii Viktorovych, Reshetnikova Valentyna Semenivna, Lytvynenko Raisa Ivanivna, Honcharuk Nina Oleksandrivna, Holub IEvheniia Anatoliivna, Lytvynenko Mykola Antonovych,

UA
3 records

Yevropa

Active

Triticum aestivum L. subsp. spelta (L.) Thell. · Spelt

Liubych Vitalii Volodymyrovych, Zabolotna Ivanna Romanivna, Iliuchenko Oleksandr Serhiiovych, Rusavskyi Vladyslav Leonidovych, Parii IUliia Oleksandrivna, Parii IAroslav Fedorovych, Zhekova Iryna Olehivna, Novak Zhanna Mykolaivna, Parii Myroslav Fedorovyc

UA
3 records

Zagłoba

Active

Apium graveolens L. var. rapaceum (Mill.) Gaud. · Celeriac

Przedsiębiorstwo Nasiennictwa Ogrodniczego i Szkółkarstwa Spółka Akcyjna w upadłości likwidacyjnej \Instytut Ogrodnictwa - Państwowy Instytut Badawczy

PL
3 records

WOODSTOCK

Terminated

Triticum aestivum L. · Bread wheat

NICKERSON (UK)

IE
3 records

Triticum aestivum L. · Bread wheat

Rybalka Oleksandr Illich, Reshetnikova Valentyna Semenivna, Alieksieienko IEvhenii Viktorovych, Maksymov Mykola Havrylovych, Lytvynenko Raisa Ivanivna, Holub IEvheniia Anatoliivna, Honcharuk Nina Oleksandrivna, Lytvynenko Mykola Antonovych,

UA
3 records

Wasmond

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

DE
3 records

Vinzenz

Active

Triticum aestivum L. · Bread wheat

Lorenz Hartl^^^Adalbert Bund^^^Hubert Kempf

DE
3 records

Vanilia

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

PL
4 records

Vahoma

Active

Triticum aestivum L. · Bread wheat

Babaiants Olha Vadymivna, Rodenko Halyna Anatoliivna, Fedchenko Volodymyr Pavlovych, Bosakovska Nataliia IUriivna, Shpykuliak IEvhenii Anatoliiovych, Narhan Tetiana Pavlivna, Nakonechnyi Mykola IUriiovych, Yeryniak Mykola Ivanovych, Lyfenko Savelii Pylypo

UA
3 records

Unis

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

CZ
3 records

Titrinio

Terminated

x Triticosecale Wittm. ex A. Camus · Triticale

SEMILLAS BATLLE, S.A.

ES
2 records

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