Diseases
Triticum aestivum L.
A group of fungal diseases of wheat, including Septoria tritici blotch, tan spot, and spot blotch. The diseases have similar symptoms but differ in pathogens and genetic mechanisms of interaction with the host plant.
In the reference 239 varieties crop Bread wheat, where this is mentioned in the description.
The most common pathogens of leaf blotch are Zymoseptoria tritici (Septoria tritici blotch), manifested by black pycnidia in light-colored spots; Pyrenophora tritici-repentis (tan spot), characterized by spots with a chlorotic halo; and Bipolaris sorokiniana (spot blotch), which forms brown spots with a dark border.
The genetic control of resistance involves specific loci. For Septoria tritici blotch, genes of the Stb series (e.g., Stb16q, Stb7) have been identified. Resistance to tan spot is closely linked to the Tsn1 locus: the presence of the dominant allele makes the variety susceptible to the ToxA toxin produced by the pathogen, which exacerbates necrotic lesions.
At least eight races have been described for tan spot, classified by virulence on sets of differential varieties. Physiological leaf spot, which arises as a reaction to stress factors or phytotoxicity of chemicals and has no genetic resistance nomenclature, should be distinguished from infectious leaf blotches.
General information about the subject — on the page Leaf spot diseases.
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.
Triticum aestivum L. · Bread wheat
Anne Ingver 20%, Merlin Haljak 10%, Reine Koppel 70% Centre of Estonian Rural Research and Knowledge
Triticum aestivum L. · Bread wheat
SELGEN A.S
Triticum aestivum L. · Bread wheat
Nina Pfeiffer
Triticum aestivum L. · Bread wheat
Limagrain Europe S.A.S
Triticum aestivum L. · Bread wheat
AGRIPRO SEEDS
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. · Bread wheat
Csoesz Laszlone / Matuz Janos / Kertesz Zoltan / Pusztai Laszlone / Falusi Janos / Schulcz Jozsefne / Beke Bela / Pauk Janos / Sandor Zoltan / Cseuz Laszlo
Triticum aestivum L. · Bread wheat
RAGT CZECH S.R.O.
Triticum aestivum L. · Bread wheat
Lietuvos agrarinių ir miškų mokslų centras
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Mariann Rákszegi^^^Klára Mészáros^^^Ildikó Karsai^^^Katalin Puskás
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. · Bread wheat
Pauk Janos / Cseuz Laszlo / Lantos Csaba / Papp Maria / Beke Bela / Ovari Judit / Pugris Tamas
Triticum aestivum L. · Bread wheat
Lietuvos agrarinių ir miškų mokslų centras
Triticum aestivum L. · Bread wheat
ASUR Plant Breeding S.A.S
Triticum aestivum L. · Bread wheat
SEMUNDO SAATZUCHT GMBH
Triticum aestivum L. · Bread wheat
SARL ADRIEN MOMONT ET FILS, FR
Triticum aestivum L. · Bread wheat
Výzkumné Centrum Selton s.r.o., Selgen A.S.
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Triticum aestivum L. · Bread wheat
Poznanska Hodowla Roslin Sp. z o.o
Triticum aestivum L. · Bread wheat
Dominique Lanoie
Triticum aestivum L. · Bread wheat
Nickerson SA (FR)
Triticum aestivum L. · Bread wheat
Dario Fossati
Triticum aestivum L. · Bread wheat
Lietuvos agrarinių ir miškų mokslų centras