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Diseases

Sunflower rust

Helianthus annuus L.

A fungal disease caused by the autoecious obligate parasite Puccinia helianthi. The disease affects the vegetative organs of the plant throughout the entire growing season, leading to a reduction in oil content by up to 15% and yield losses of up to 45%.

In the reference 362 varieties crop Sunflower, where this is mentioned in the description.

The pathogen completes its full life cycle exclusively on sunflower. Symptoms appear as light green spots with pycnidia on the upper side of the leaf, orange aecia on the lower side, followed by the development of rusty-brown urediniopustules. By the end of the growing season, dark teliospores form within the pustules, ensuring the pathogen's overwintering.

Puccinia helianthi populations are characterized by high variability. A set of differential lines, such as SM 90, SM 29, P-386, and HA-R1–R5, is used to identify physiological races. In Russia, the presence of both old and aggressive new races is noted, including 700, 710, 722, and 772.

Crop resistance is determined by dominant genes, among which R1 and Radv are known. In total, about 19 resistance genes have been described; however, many of them are losing their effectiveness due to the constant evolution of the pathogen. Breeding is aimed at the introgression of new genes, for which molecular markers are used to monitor them.

General information about the subject — on the page Rust.

Sources8

Varieties of Sunflower 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 Regata

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG FR IT UA
10 records

RGT Capitoll

Active

Helianthus annuus L. · Sunflower

RAGT 2N S.A.S

FR IT SK UA
9 records

ES Anthemis CLP

Active

Helianthus annuus L. · Sunflower

Euralis Semences

AT BG IT UA
10 records

ES Magnific

Terminated

Helianthus annuus L. · Sunflower

Euralis Semences FR

CZ DE FR IT SK
8 records

SY Daxton

Active

Helianthus annuus L. · Sunflower

Syngenta Participations AG| CH

FR IT PT UA
10 records

ES Electric CLP

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG IT RO UA
10 records

SY Diamantis

Active

Helianthus annuus L. · Sunflower

Syngenta Participations,CH

FR SK UA
9 records

Dracaris CLP

Active

Helianthus annuus L. · Sunflower

Euralis Semences, F

BG ES UA
10 records

ES Isida

Active

Helianthus annuus L. · Sunflower

Euralis Semences, F

ES FR UA
9 records

ES Loris CLP

Active

Helianthus annuus L. · Sunflower

Euralis Semences, Mondonville FR

HU IT UA
10 records

Armada cl

Active

Helianthus annuus L. · Sunflower

MAY-AGRO SEED CORPORATION

BG ES
10 records

MAS 86OL

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

ES FR IT RO UA
9 records

MAS 98K

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

FR IT SK UA
9 records

ES Agora

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG FR IT UA
9 records

Suzuka

Active

Helianthus annuus L. · Sunflower

Syngenta Participations AG

ES PT UA
9 records

MAS 83SU

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

IT UA
8 records

ES Savana

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG ES UA
9 records

ES Janis

Active

Helianthus annuus L. · Sunflower

Euralis Semences

BG RO UA
9 records

Helesun SU

Active

Helianthus annuus L. · Sunflower

TEODORESCU ANDREEA

RO UA
9 records

Suvora

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG

ES IT RO UA
9 records

P64le269

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

ES PT RO UA
10 records

LG50500

Active

Helianthus annuus L. · Sunflower

Remy ROUANET

ES IT RO UA
8 records

SY Lazuri Clp

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

FR PT SK UA
10 records

SY Amazonia

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

PT RO SK UA
9 records

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