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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

Septoria blotch — soft wheat 945 Septoria blotch of triticale 147 Septoria tritici blotch — durum wheat 128 Septoria blotch of oats 30 Septoria Leaf Blotch of Rye 26 Septoria Leaf Spot of Sunflower 23 Septoria Brown Spot — Soybean 21 Septoria Leaf Spot — Celeriac 21 Gooseberry Septoria Leaf Spot 21 Septoria blotch of barley 20 Septoria Blotch of Spelt 17 Septoria Blotch — Common Wheat 16 Septoria Leaf Spot of Black Currant 15 Septoria Leaf Spot — Celery 14 Septoria leaf spot of red currant 12 Septoria Blight of Wheat 9 Pear Septoria Leaf Spot 9 Parsley Septoria leaf spot 9 Tomato Septoria Leaf Spot 7 Septoria Blight of Pea 5 Celery Septoria Blight 4 Septoria Leaf Spot of Lettuce 3 Septoria Leaf Blotch of Naked Oats 3

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.

Lanetto

Active

x Triticosecale Wittm. ex A. Camus · Triticale

Lantmännen SW Seed B. V.

CZ DE EE FI LT LU
13 records

LG Abilene

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe SA (FR)

BG FR HU RO SK UA
14 records

Faxe

Active

Triticum aestivum L. · Bread wheat

Sejet Planteforaedling I,S

EE LT PL SE UA
13 records

LG Arnova

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR IT SK UA
16 records

Ténor

Active

Triticum aestivum L. · Bread wheat

Unisigma GIE Recherche et Selection (FR)

FR HR IT PT UA
19 records

LG Aneri

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, FR

HU RO SK UA
13 records

LG Astrolabe

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR HU IT RO
14 records

LG Ascona

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR HU IT RO
15 records

Estivus

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH&Co KG

AT BE PL UA
11 records

Apache

Active

Triticum aestivum L. · Bread wheat

Nickerson SA (FR)

BG FR HR RO
15 records

WPB Troy

Active

Triticum aestivum L. · Bread wheat

WIERSUM PLANTBREEDING

EE FI LT PL UA
14 records

Altigo

Active

Triticum aestivum L. · Bread wheat

Nickerson International Research S.N.C.

BG FR HU RO SK UA
13 records

LG Asterion

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG ES FR HU RO SK
13 records

KWS Pulsor

Active

Secale cereale L. · Rye

KWS Lochow

AT DE DK EE PL UA
13 records

Cando

Active

x Triticosecale Wittm. ex A. Camus · Triticale

SW Seed BV (NL)

CZ DE DK EE FR SE
12 records

ES Governor

Active

Glycine max (L.) Merr. · Soybean

Patrice Jeanson

FR PL SK UA
11 records

LG Optimist

Active

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

BE EE NL PL SK UA
12 records

Lemmy

Active

Triticum aestivum L. · Bread wheat

Nordsaat Saatzucht GmbH, Böhnhausen DE

EE HU LT PL UA
13 records

Kris

Active

Triticum aestivum L. · Bread wheat

Societe RAGT 2N

DK LT LV PL SE
14 records

Inpetto

Active

x Triticosecale Wittm. ex A. Camus · Triticale

SW Seed B. V.

CZ DE EE LT LV SE
13 records

Colonia

Active

Triticum aestivum L. · Bread wheat

NICKERSON INTERNATIONAL RESEARCH SNC

BE HU LT LU PL
12 records

Viscount

Active

Triticum aestivum L. · Bread wheat

Limagrain UK

BE EE LT LV PL
13 records

Akvitan

Active

Triticum aestivum L. · Bread wheat

Landwirtschaftliche Lehranstalten Triesdorf

EE LT PL UA
14 records

Stromboli

Active

Triticum aestivum L. · Bread wheat

SARL ADRIEN MOMONT ET FILS, FR

FR HR IT SK UA
13 records

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