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 Spelt 16 Blackcurrant 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.

TRIBAT

Withdrawn

Triticum aestivum L. · Bread wheat

SEMILLAS BATLLE, S.A.

1 record

UK 267

Terminated

Triticum aestivum L. · Bread wheat

Chebkaov Mykola Petrovych, Shelepov Volodymyr Vasyl`ovych, Zhyvotkov Leonid Oleksandrovych, Vlasenko Volodymyr Anattoliiovych, Ulich Oleksandr Leonidovych, Artemchuk Iryna Petrivna, Lohvynenko Valentyna Fedorivna, Morhun Volodymyr Vasylovych,

1 record

Trionfo

Application submitted

Triticum aestivum L. · Bread wheat

CO.SE.ME. S.R.L.

1 record

Tremie(+)

Withdrawn

Triticum L. · Wheat

GIE Serasem

1 record

Tybalt / Tiubalt

Terminated

Triticum aestivum L. · Bread wheat

Bertrand Schuling

2 records

Torrild/Torrild

Terminated

Triticum aestivum L. · Bread wheat

ERIK TYBIRK

2 records

Tifi

Terminated

Triticum monococcum L. · Einkorn wheat

Dr. Karl-Josef Müller

1 record

Syneva Nadii

Active

Lavandula angustifolia Mill. · English lavender

Svyrydovskyi Valerii Mykolaiovych, Dudchenko Volodymyr Viktorovych, Shpak Tetiana Mykolaivna, Svydenko Liudmyla Viktorivna,

2 records

TEMPLAR

Terminated

Triticum aestivum L. · Bread wheat

PLANT BREEDING INTERNATIONAL CAMBRIDGE

2 records

Taifun

Terminated

Triticum aestivum L. subsp. aestivum · Bread wheat

Lochow-Petkus GmbH Herrn Dr. Klaus Brunckhorst

2 records

Svitiaz

Terminated

Triticum aestivum L. · Bread wheat

Morhun Bohdan Volodymyrovych, Skrypl`ov Volodymyr Oleksandrovych, Morhun Volodymyr Vasyl`ovych,

2 records

Svoboda kharkivska

Active

x Triticosecale Wittm. ex A. Camus · Triticale

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

2 records

Sprytna

Terminated

Glycine max (L.) Merr. · Soybean

Kobyzieva Liubov Nykyforivna, Riabukha Serhii Stanislavovych, Chernyshenko Pavlo Volodymyrovych, Moshkova Olena Mykolaivna, Matushkin Viktor Oleksiiovych,

2 records

S-PRO-511

Application submitted

Helianthus annuus L. · Sunflower

Tovarystvo z obmezhenoiu vidpovidalnistiu «IEvrosem»

2 records

Solitaer

Terminated

Triticum aestivum L. subsp. aestivum · Bread wheat

SAATZUCHT SCHWEIGER GBR

1 record

Sotnytsia

Terminated

Triticum aestivum L. · Bread wheat

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

2 records

Sorial

Active

Triticum aestivum L. · Bread wheat

Caussade Semences SA (FR)

1 record

Soltan

Active

Helianthus annuus L. · Sunflower

Hyskie Ivan Mykolaiovych, Bohdan Ihor` Vyktorovych,

2 records

Sozonivs`kyi

Active

Hordeum vulgare L. · Barley

Savranchuk Volodymyr Viktorovych, Mel`nychenko Mykhailo Leontiiovych,

2 records

Solomiia

Terminated

Triticum aestivum L. · Bread wheat

Ushkarenko Viktor Oleksandrovych, Ranchevych Peter, Orliuk Anatolii Pavlovych, Lazer Petro Nartsysovych, Zhuzha Oleksandr Dmytrovych, Denchych Serbi Slav, Bazalii Valerii Vasyl`ovych,

4 records

Sicheslava

Active

Triticum aestivum L. · Bread wheat

Morhun Volodymyr Vasylovych, Oksom Volodymyr Polikarpovych, Morhun Bohdan Volodymyrovych

2 records

Schedrivka kyivs`ka

Active

Triticum aestivum L. · Bread wheat

Sheredeko Leonid Mykolaiovych, Buriak Mykola Vasyl`ovych, Buriak Vasyl` IUkhymovych, Oksom Volodymyr Polikarpovych, Skryplov Volodymyr Oleksandrovych, Morhun Volodymyr Vasylovych,

2 records

Scenic

Withdrawn

Hordeum vulgare L. · Barley

Florimond Desprez Veuve et Fils, FR

1 record

Samburs'ka

Terminated

Ribes rubrum L. · Redcurrant

Kopan Volodymyr Pavlovych, Kopan` Kira Mykolaivna,

2 records

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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.