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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.

P64LL187

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION US

AT FR RO UA
11 records

P63LL209

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION US

ES FR IT UA
9 records

KWS Flexes CL

Active

Helianthus annuus L. · Sunflower

KWS SAAT SE, DE

RO SI SK UA
8 records

Hysun 298

Active

Helianthus annuus L. · Sunflower

Roberto Reid

IT PT RO UA
8 records

ES Ceylon SU

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG ES IT UA
8 records

ES Epic

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG FR IT UA
9 records

Reall

Active

Helianthus annuus L. · Sunflower

Sebastien Chatre

FR IT UA
7 records

ES Belfis

Active

Helianthus annuus L. · Sunflower

Euralis Semences

BG IT UA
8 records

SY Cadix

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG

ES UA
6 records

SY Barbati

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

IT PT UA
7 records

SY Arco

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

ES PT UA
6 records

P64LL264

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION US

FR RO UA
9 records

Hysun 254

Active

Helianthus annuus L. · Sunflower

PHILIPPE JOUVE

IT PT UA
8 records

Hysun 231 HO

Active

Helianthus annuus L. · Sunflower

PHILIPPE JOUVE

PT RO UA
7 records

Hysun 45

Terminated

Helianthus annuus L. · Sunflower

Pacific Seeds Pty Ltd

ES HR IT
6 records

Estrada

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG, CH

FR SK UA
8 records

Acordis CLP

Active

Helianthus annuus L. · Sunflower

Olivier Soulie

BG HU UA
8 records

Sanay MR

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS A.G.

ES UA
7 records

R1119JI

Active

Helianthus annuus L. · Sunflower

SOLTIS S.A.S

BG UA
6 records

Meteor CL

Active

Helianthus annuus L. · Sunflower

May Agro Seed Corporation (TR)

BG UA
7 records

Duet CL

Active

Helianthus annuus L. · Sunflower

MAY AGRO SEED COPR.

IT UA
9 records

ES Armonica

Active

Helianthus annuus L. · Sunflower

Euralis Semences, F

IT UA
8 records

ES Rosalia

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

FR RO UA
8 records

Sunaris

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG

ES IT RO UA
9 records

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