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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.

Rudico

Active

Triticum turgidum L. subsp. dicoccum (Schrank ex Schübl.) Thell. · Emmer

Národní centrum zemědělského a potravinářského výzkumu, v. v. i. (CZ)

CZ
1 record

Rw Nadal

Terminated

Triticum aestivum L. · Bread wheat

RAGT CZECH S.R.O.

CZ
2 records

Saha

Active

Triticum aestivum L. · Bread wheat

Traskovetska Vita Anatoliivna, Rybalka Oleksandr Illich, Fedchenko Volodymyr Pavlovych, Bosakovska Nataliia IUriivna, Narhan Tetiana Pavlivna, Nakonechnyi Mykola IUriiovych, Lyfenko Savelii Pylypovych,

UA
2 records

RW41862

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n

NL
1 record

RW20957

Active

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

IT
1 record

Salviai

Terminated

Ribes nigrum L. · Blackcurrant

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
1 record

Sacramento

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

FR
1 record

RGT Labelur

Withdrawn

Triticum durum Desf. · Durum wheat

RAGT 2n, FR

FR
1 record

RGT Moneo

Withdrawn

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

FR
1 record

Triticum durum Desf. · Durum wheat

RAGT 2n, FR

FR
1 record

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

FR
1 record

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

FR
1 record

Triticum aestivum L. · Bread wheat

RAGT 2n, FR

FR
1 record

Quintus

Withdrawn

x Triticosecale Wittm. ex A. Camus · Triticale

NORD| NORDSAAT Agrargesellschaft mit beschraenkter Haftung

DE
1 record

Triticum aestivum L. · Bread wheat

Zhurbin Volodymyr Dmytrovych, Horhan Al`ona Mykhailivna, Horhan Tetiana Mykhailivna, Horhan Nadiia Oleksandrivna, Horhan Mykhailo Dmytrovych,

UA
2 records

Triticum aestivum L. · Bread wheat

STARYCHENKO VASYL, KOVAL OLHA, MARCHENKO MARIIA, TYMOSHENKO OLHA, BURIAK VASYL

UA
2 records

PUNTAL

Terminated

Triticum aestivum L. · Bread wheat

NICKERSON S.A.

ES
1 record

Previa

Terminated

Triticum aestivum L. · Bread wheat

TAYLOR MIKE

DE
2 records

Triticum aestivum L. · Bread wheat

Moskalets Valentyn Vitaliiovych, Kobyzhcha Ivan Oleksandrovych, Derev'ianko Stanislav Vasyl`ovych, Moskalets` Vitalii Ivanovych,

UA
2 records

Polians`ke

Terminated

x Triticosecale Wittm. ex A. Camus · Triticale

Bortnovskyi Vitalii Mykolaiovych, Petrychenko Vasyl Florovych, Lilyk Tetiana Volodymyrivna, Buhaiov Vasyl Dmytrovych,

UA
2 records

Pilėnai

Terminated

Ribes nigrum L. · Blackcurrant

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
1 record

x Triticosecale Wittm. ex A. Camus · Triticale

Shcechenko Olha IEvheniivna, Melnyk Vira Serhiivna, Kapustina Tetiana Borysivna, Riabchun Viktor Kuzmych,

UA
1 record

Triticum aestivum L. · Bread wheat

Vlaschuk Anatolii Mykolaiovycha, Bazalii Halyna Hryhorivna, Usyk Liudmyla Oleksandrivna, Vozhehova Raisa Anatoliivna,

UA
2 records

Oriika

Terminated

Triticum aestivum L. · Bread wheat

Skryplov Volodymyr Oleksandrovych, Oksom Volodymyr Polikarpovych, Morhun Bohdan Volodymyrovych, Bratuschak Serhii Petrovych, Artemchuk Iryna Petrivna, Morhun Volodymyr Vasylovych,

UA
2 records

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