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Diseases

Smut

Ustilaginomycetes

Smut is a group of cereal diseases caused by fungi, in which plant tissues are destroyed and replaced by a mass of black or dark brown spores. The disease is difficult to diagnose until the heading stage, yet it can lead to the loss of half the crop yield.

Mentioned in descriptions 5 110 varieties reference book.

Smut manifests as the destruction of plant tissues, which are replaced by a powdery mass of teliospores. In the case of loose smut, the entire ear is affected, becoming dusty, while its rachis often remains bare. Covered smut is characterized by the preservation of the grain coat, inside which the mycelium develops; when crushed, a specific "herring" odor is detected.

The development of the disease depends on the biological characteristics of the pathogen and environmental conditions. Loose smut infects the plant during the flowering phase under high humidity and temperatures from +22 to +27 °C, overwintering inside the grain. Covered smut infects the plant during the seed germination period from inoculum present on the surface of the caryopsis or in the soil.

Varietal resistance is provided by genetic mechanisms that prevent the pathogen from penetrating the ovary or block the development of mycelium in the seedling. In the variety testing system, the degree of infection is assessed visually at the full maturity stage, and varieties demonstrating a minimal percentage of infected ears compared to the standards receive higher ratings.

Sources10

Breakdown by crop

Found in these crops

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.

Skarlet

Application submitted

Hordeum vulgare L. · Barley

UA
1 record

MAS 25M

Withdrawn

Zea mays L. · Maize

SK
1 record

Metelytsia

Application submitted

Hordeum vulgare L. · Barley

UA
1 record

Mecano

Withdrawn

Zea mays L. · Maize

DE
1 record

LG30272

Terminated

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

CZ
1 record

Krupynka 10

Application submitted

Sorghum Moench · Sorghum

UA
1 record

Kometa MV

Application submitted

Zea mays L. · Maize

UA
1 record

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

1 record

Suporto

Active

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

1 record

Sarolta

Active

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

1 record

Grandio

Active

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

1 record

Dobroto

Active

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

1 record

LG30352

Active

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

1 record

POLLANUM

Terminated

Lolium multiflorum Lam. ssp. italicum (A. Br.) Volkart · Italian ryegrass

HR
1 record

BC 418

Terminated

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

HR
1 record

P 3965

Terminated

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

HR
1 record

P9721

Terminated

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

1 record

P8307

Active

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

1 record

P0900

Active

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

1 record

P9486

Active

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

1 record

P9415

Active

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

1 record

P9241

Active

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

1 record

P7515

Active

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

1 record

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