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Diseases

Helminthosporium Leaf Blight of Maize

Zea mays L. subsp. mays (Maize Group)

A group of maize diseases caused by pathogens Cochliobolus heterostrophus (southern corn leaf blight) and Setosphaeria turcica (northern corn leaf blight), affecting leaves and generative organs.

In the reference 244 varieties crop Maize, where this is mentioned in the description.

Southern corn leaf blight, caused by Bipolaris maydis, is subdivided into races O, T, and C. Race T possesses high virulence to hybrids with Texas male-sterile (T) cytoplasm by producing a host-specific toxin. Symptoms manifest as spindle-shaped lesions with a dark center and velvety mold on the ears, leading to kernel rot.

Northern corn leaf blight, caused by the pathogen Exserohilum turcicum, is characterized by the appearance of large brown lesions measuring up to 10–25 cm in length with a reddish-brown border. Under high humidity, the lesions are covered with the olive-colored sporulation of the pathogen.

Breeding for resistance relies on the use of specific genes, such as HM, responsible for the response to toxins, and the rhm1 gene associated with resistance to southern corn leaf blight. In most cases, varietal resistance is considered a quantitative trait inherited through additive and dominant gene effects, controlled at the level of QTL loci.

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.

Kolossalis

Active

Zea mays L. subsp. mays (Maize Group) · Maize

KWS SAAT SE & CO.KGAA

BE CZ FR NL PL
6 records

Oldham

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

SYNGENTA SEEDS AG, CH

CZ FR PL
5 records

Nerissa

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

SYNGENTA SEEDS AG, CH

BE CZ FR NL
5 records

ES Tryo

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

Euralis Semences

BE FR NL PL
5 records

LG30223

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

Limagrain Verneuil Holding (FR)

BE FR NL
6 records

SY Gordius

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Syngenta Crop Protection Lda.

BE CZ NL
4 records

RGT Trapixx

Active

Zea mays L. subsp. mays (Maize Group) · Maize

RAGT 2n, FR

CZ FR PL
4 records

Antaro

Active

Zea mays L. subsp. mays (Maize Group) · Maize

SAATBAU LINZ EGEN

CZ ES PL
4 records

RGT Oldanoxx

Active

Zea mays L. subsp. mays (Maize Group) · Maize

RAGT 2n, FR

CZ FR PL
4 records

P9944

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

CZ ES PL
5 records

P8244

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

CZ NL PL
4 records

P9255

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

CZ ES PL
4 records

P7948

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

CZ NL PL
4 records

Angeleen

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Limagrain Europe s.a.

BE FR NL
4 records

ES Crossman

Protection expired

Zea mays L. subsp. mays (Maize Group) · Maize

LIDEA FRANCE SAS

BE FR NL
4 records

Cabalio

Active

Zea mays L. subsp. mays (Maize Group) · Maize

KWS SAAT SE & CO.KGAA

CZ FR NL
4 records

ES Palladium

Active

Zea mays L. subsp. mays (Maize Group) · Maize

LIDEA FRANCE SAS

BE FR PL
4 records

DKC4795

Active

Zea mays L. subsp. mays (Maize Group) · Maize

MONSANTO TECHNOLOGY

ES FR HR
4 records

ES Asteroid

Active

Zea mays L. subsp. mays (Maize Group) · Maize

LIDEA FRANCE SAS

CZ FR PL
4 records

ES Garant

Protection expired

Zea mays L. subsp. mays (Maize Group) · Maize

Euralis Semences FR

CZ FR HR
4 records

ES Creative

Active

Zea mays L. subsp. mays (Maize Group) · Maize

Euralis Semences FR

CZ FR PL
4 records

P 8255

Active

Zea mays L. subsp. mays (Maize Group) · Maize

PIONEER OVERSEAS CORPORATION

CZ PL
3 records

MAS 35K

Active

Zea mays L. subsp. mays (Maize Group) · Maize

MAS Seeds,FR

FR HR
4 records

MAS 45 YG

Terminated

Zea mays L. subsp. mays (Maize Group) · Maize

Maisadour Semences, FR

FR
2 records