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Diseases

Maize leaf spots

Zea mays L. subsp. mays (Maize Group)

A group of fungal and bacterial diseases of maize that cause necrotic lesions on the foliage. Resistance to pathogens is provided by both monogenic loci and quantitative polygenic defense mechanisms.

In the reference 35 varieties crop Maize, where this is mentioned in the description.

The main causal agents of leaf spots include Cochliobolus heterostrophus, Setosphaeria turcica, Cercospora zeae-maydis, Cochliobolus carbonum, and Physoderma zeae-maydis, as well as bacterial pathogens Pseudomonas and Xanthomonas. Symptoms vary from streaks and stripes to rectangular or oval necroses, often delimited by leaf veins, with disease development typically starting from the lower canopy.

Genetic protection is based on specific genes, such as Hm1, responsible for the detoxification of Cochliobolus carbonum metabolites, and a series of Ht genes (Ht1, Ht2, Ht3, Htm1, Htn1) that reduce the severity of Setosphaeria turcica infection. In addition to monogenic resistance, quantitative resistance controlled by multiple QTLs is widely used in breeding, with its level evaluated using scoring scales.

General information about the subject — on the page Leaf spot diseases.

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.

KWS Editio

Active

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

KWS SAAT SE & CO.KGAA

CZ FR NL PL
5 records

LG31207

Active

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

Limagrain Europe s.a.

BE FR NL
4 records

ES Asteroid

Active

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

LIDEA FRANCE SAS

CZ FR PL
4 records

SM Furman

Active

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

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

CZ PL
4 records

Qualito

Active

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

KWS SAAT SE & CO.KGAA

BE PL
3 records

PR39H32

Terminated

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

PIONEER HI-BRED INTERNATIONAL

FR PL
4 records

LH190

Terminated

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

Holden Foundation Seeds Inc. (US)

ES FR
2 records

P7179

Active

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

PIONEER OVERSEAS CORPORATION

NL
2 records

P0640

Active

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

PIONEER HI-BRED INTERNATIONAL

ES
2 records

Dublino

Active

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

SAATBAU LINZ EGEN

PL
2 records

Concorde

Protection expired

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

Coop de Pau SCA (FR)

ES FR
3 records

See Star

Application submitted

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

Seed Solutions Sp.z.o.o.(PL)

HR
1 record

P7892

Active

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

NL
2 records

Anjou 510

Withdrawn

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

Limagrain Genetics Grandes Cultures SA (FR)

FR
1 record

P 3812

Withdrawn

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

Pioneer Hi-Bred International Inc (US)

FR
1 record

LH 117

Terminated

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

Holden Foundation Seeds Inc. (US)

FR
1 record

ICMC629

Terminated

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

CIBA GEIGY, S.A.

ES
1 record

6205

Terminated

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

Dekalb Genetics Corporation (usa) (US)

FR
1 record

331

Terminated

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

PANNAR UK LTD.

ES
1 record

SUM 405

Active

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

2 records

PR31R88

Terminated

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

1 record

Nova

Terminated

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

1 record

P1477W

Active

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

1 record

P1306W

Active

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

1 record