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

Bread wheat 933 Triticale 143 Durum wheat 127 Oat 30 Rye 26 Celeriac 25 Sunflower 23 Soybean 22 Gooseberry 21 Barley 20 Blackcurrant 16 Celery 16

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.

Gepard

Active

Avena sativa L. · Oat

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

4 records

Fuzja

Active

Triticum aestivum L. · Bread wheat

Poznanska Hodowla Roslin Sp. z o.o

4 records

Fortetsia

Active

Triticum aestivum L. · Bread wheat

Vlashcuk Anatolii Mykolaiovych, Biliaieva Iryna Mykolaivna, Zhupyna Andrii IUriiovych, Lavrynenko IUrii Oleksandrovych, Bazalii Halyna Hryhorivna, Usyk Liudmyla Oleksandrivna,

5 records

Burshtyn

Active

Triticum durum Desf. · Durum wheat

Nesterova Nataliia Havrylivna, Kotelenets` Olena Hryhorivna, Vasyliev Oleksii Anatoliiovych, Parfentiev Mykhailo Hryhorovych, Lytvynenko Mykola Antonovych, Albul Anatolii Oleksiiovych, Palamarchuk Anatolii Ivanovych,

4 records

Burbon

Active

Triticum durum Desf. · Durum wheat

MAL'ChIKOV PETR NIKOLAEVICh / MYaSNIKOVA MARINA GERMANOVNA / NATOLI VINCENZO

3 records

Blyskuchyi

Active

Triticum durum Desf. · Durum wheat

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

2 records

Bestia

Active

Triticum aestivum L. · Bread wheat

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

3 records

Arden

Active

Avena sativa L. · Oat

Danko Hodowla Roslin Sp.z.o.o.

4 records

Astarta

Active

Triticum aestivum L. · Bread wheat

Morhun Bohdan Volodymyrovych, Oksom Volodymyr Polikarpovych, Skryplov Volodymyr Oleksandrovych, Morhun Volodymyr Vasylovych,

4 records

Araucaria

Active

Triticum aestivum L. · Bread wheat

GDM ARGENTINA S.A

3 records

Abissina

Active

Avena sativa L. · Oat

GENETIC SERVICES S.R.L.

2 records

Bulel

Active

x Tritordeum (Hordeum chilense x Triticum turgidum)

Agrasys S.L.

2 records

ZL-22A

Terminated

Helianthus annuus L. · Sunflower

Kutischeva Nataliia Mykolaivna, Lytovchenko Borys Kyrylovych, Scherban` Nataliia Fedorovna, Scherban` Serhii Vasyl`ovych, Riabota Oleksandr Mykolaiovych,

2 records

Zuzana

Active

Triticum aestivum L. · Bread wheat

3 records

Kompakt

Active

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

CZ SK

3 records

Nuget

Active

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

CZ SK

3 records

Black Reward

Active

Ribes nigrum L. · Blackcurrant

NL SI

6 records

Izabela

Active

Triticum aestivum L. · Bread wheat

4 records

Kolor

Protection expired

x Triticosecale Wittm. ex A. Camus · Triticale

4 records

Verita

Active

Triticum aestivum L. · Bread wheat

4 records

Sani

Active

Triticum aestivum L. · Bread wheat

6 records

Mv Medal

Protection expired

x Triticosecale Wittm. ex A. Camus · Triticale

3 records

NS Tor

Active

Helianthus annuus L. · Sunflower

3 records

Octavus

Terminated

Triticum aestivum L. · Bread wheat

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.