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Diseases

Septoria blotch — soft wheat

Triticum aestivum L.

A fungal disease of wheat caused by the pathogens Zymoseptoria tritici and Parastagonospora nodorum. It manifests as leaf spots with pycnidia and is managed through Stb resistance genes.

In the reference 945 varieties crop Bread wheat, where this is mentioned in the description.

The pathogens causing Septoria blotch in soft wheat are the fungi Zymoseptoria tritici, which primarily affects leaves, and Parastagonospora nodorum, which causes lesions on leaves, stems, and spikes. The infection progresses through a prolonged asymptomatic phase, followed by the development of light green to brown spots on the affected tissues. A key diagnostic sign of the disease is the appearance of pycnidia — small black fruiting bodies in the center of the spots.

Genetic resistance of the crop to Septoria blotch is based on the system of Stb genes, such as Stb2, Stb4, Stb6, Stb9, Stb11, and Stb13, which provide juvenile or adult-plant resistance. In breeding programs, the pyramiding of multiple Stb genes is practiced to increase the durability of protection. In the context of interaction with P. nodorum, the sensitivity gene Tsn1 also plays an important role, determining plant susceptibility through interaction with the fungus's necrotrophic effectors.

General information about the subject — on the page Septoria leaf blotch.

Sources8

Varieties of Bread wheat mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Shabras

Active

Triticum aestivum L. · Bread wheat

Syngenta Participations AG

4 records

Revelation

Active

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

4 records

Rabagast

Active

Triticum aestivum L. · Bread wheat

Graminor AS, N-2322 Ridabu

4 records

Pizza

Active

Triticum aestivum L. · Bread wheat

Getreidezüchtung Peter Kunz Peter Kunz

4 records

Panacea

Active

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

4 records

Moulton

Active

Triticum aestivum L. · Bread wheat

ELSOMS WHEAT

3 records

Mossette

Active

Triticum aestivum L. · Bread wheat

Dario Fossati

4 records

KWS Jackal

Active

Triticum aestivum L. · Bread wheat

KWS UK LTD

4 records

LG Cassidy

Terminated

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

4 records

Jorvik

Terminated

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

3 records

KWS Gator

Terminated

Triticum aestivum L. · Bread wheat

KWS UK LTD

4 records

KWS Curlew

Terminated

Triticum aestivum L. · Bread wheat

KWS UK LTD

3 records

Laban

Protection expired

Triticum aestivum L. · Bread wheat

Graminor AS, N-2322 Ridabu

3 records

Gallant

Active

Triticum aestivum L. · Bread wheat

Syngenta UK Ltd

5 records

Gulliver

Terminated

Triticum aestivum L. · Bread wheat

Nickerson International Research S.N.C.

3 records

Freiston

Active

Triticum aestivum L. · Bread wheat

ELSOMS WHEAT

4 records

Dilago

Active

Triticum aestivum L. · Bread wheat

Agroscope

4 records

Conqueror

Terminated

Triticum aestivum L. · Bread wheat

KWS UK LTD

3 records

Chilton

Terminated

Triticum aestivum L. · Bread wheat

DEUTSCHE SAATVEREDELUNG AG

3 records

Cadlimo

Active

Triticum aestivum L. · Bread wheat

Agroscope

4 records

Cougar

Terminated

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

6 records

Cambrena

Active

Triticum aestivum L. · Bread wheat

Dario Fossati Agroscope

5 records

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