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Diseases

Helminthosporium leaf blight of maize

Zea mays L.

A group of maize diseases caused by the fungi Helminthosporium maydis and Exserohilum turcicum, manifesting as specific leaf spots and ear rot.

In the reference 613 varieties crop Maize, where this is mentioned in the description.

Southern corn leaf blight is caused by the fungus Helminthosporium maydis and is characterized by spindle-shaped spots on the leaves with a dark brown center. Races O, T, and C are known, of which race T is considered the most aggressive, as it is capable of causing ear rot and infecting plants with CMS-type cytoplasm.

Northern corn leaf blight is caused by the pathogen Exserohilum turcicum and manifests as large, elongated necrotic spots up to 20 cm in length. When breeding for resistance to this disease, race-specific Ht genes (Ht1, Ht2, Ht3) are used, which provide qualitative protection, as well as the Htn1 gene, which suppresses the fungus sporulation process.

General information about the subject — on the page Helminthosporiosis.

Sources8

Varieties of Maize 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.

ES Katamaran

Active

Zea mays L. · Maize

LIDEA FRANCE SAS

AT BG HU UA
7 records

Delphine

Active

Zea mays L. · Maize

Yevralis Semans

DE IT LT UA
7 records

Amelior

Active

Zea mays L. · Maize

MAS SEEDS

AT BE UA
10 records

KWS Kavalier

Active

Zea mays L. · Maize

Rainer Leipert

AT DE SK UA
9 records

ES Mosquito

Active

Zea mays L. · Maize

Pierre CAROLO

AT BG SK UA
8 records

Cadixxio

Active

Zea mays L. · Maize

Ragt, F

IT UA
8 records

P9960

Active

Zea mays L. · Maize

Pioneer Overseas Corporation, USA

HU IT UA
10 records

Occitan

Active

Zea mays L. · Maize

SYNGENTA SEEDS AG, CH

BG HU SI SK
7 records

LID1015C

Active

Zea mays L. · Maize

LIDEA FRANCE SAS

LT SI UA
8 records

Bourbon

Active

Zea mays L. · Maize

MAS SEEDS

IT LT UA
7 records

Bigstar

Terminated

Zea mays L. · Maize

EURALIS Semences Direction Recherche

BE DE IT UA
5 records

ES Inventive

Active

Zea mays L. · Maize

Pierre CAROLO

AT DE UA
9 records

SY Aladium

Active

Zea mays L. · Maize

SYNGENTA FRANCE S.A.S.

IT PT UA
7 records

Roberto

Active

Zea mays L. · Maize

TAUCHER ROBERT

AT SI UA
5 records

Kerala

Active

Zea mays L. · Maize

Monsanto Technology, Missouri US

AT HU SK UA
7 records

ES Yakari

Active

Zea mays L. · Maize

LIDEA FRANCE SAS

AT UA
8 records

Es Mylord

Active

Zea mays L. · Maize

Pierre CAROLO

BG HU SK UA
7 records

ES Karru

Active

Zea mays L. · Maize

LIDEA FRANCE SAS

LT SI UA
7 records

Turbojet

Active

Zea mays L. · Maize

PETIARD Benoit

IT SK UA
7 records

RGT Coruxxo

Active

Zea mays L. · Maize

Ragt, F

IT PT
9 records

NK Lucius

Active

Zea mays L. · Maize

Syngenta Crop Protection AG

HU IT UA
8 records

P9170

Active

Zea mays L. · Maize

Travis Coleman Johann Fangl

AT HU UA
6 records

P9650

Active

Zea mays L. · Maize

PIONEER OVERSEAS CORPORATION

HU IT UA
7 records

MAS 20A

Active

Zea mays L. · Maize

MAS SEEDS

IT UA
5 records

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