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Diseases

Root rots — Onion

Allium cepa L. var. cepa

A complex disease of onions caused by soil-borne fungi and pseudofungi of the genera Fusarium, Pythium, Rhizoctonia, and Phoma. It leads to root necrosis, growth retardation, leaf wilting, and subsequent softening of the onion basal plate.

In the reference 13 varieties crop Onion, where this is mentioned in the description.

The pathogens infect the root system, causing it to turn brownish-red, black, or pinkish. Infection development is accompanied by gradual root necrosis, yellowing, and wilting of the leaves starting from the tips, which often leads to stand thinning and the death of young plants.

In the case of Fusarium basal rot, the pathogenic process spreads to the base of the bulb, causing it to soften, rot, and develop a characteristic mycelial growth on the basal plate. Unlike some other onion diseases, specific resistance genes have not been established for the pathogens of these rots; therefore, breeding is based on the evaluation of lines under infectious field conditions.

General information about the subject — on the page Root rots.

Sources8

Varieties of Onion 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.

Red Wing

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

BG CZ HR NL
6 records

Franzisco

Active

Allium cepa L. var. cepa · Onion

Nickerson Zwaan B.V. (NL)

CZ HR NL PL SK
6 records

Daytona

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

BG CZ HR NL PL
7 records

Centurion

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

CZ HR NL PL
6 records

Spirit

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V.

CZ NL PL
5 records

Vaquero

Active

Allium cepa L. var. cepa · Onion

Nunza B.V

BG HR NL
4 records

Cardinal

Active

Allium cepa L. var. cepa · Onion

SHAMROCK SEED COMPANY

ES NL
5 records

Corona

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V.

CZ NL PL
5 records

Sterling

Active

Allium cepa L. var. cepa · Onion

Seminis Vegetable Seeds

ES NL PL
4 records

Red Star

Active

Allium cepa L. var. cepa · Onion

Seminis Vegetable Seeds

NL
3 records

Perla

Protection expired

Allium cepa L. var. cepa · Onion

Texas Agricultural Experiment Station

HR NL
3 records

Fireball

Active

Allium cepa L. var. cepa · Onion

Seminis Vegetable Seeds

NL PL
3 records

Fallera

Terminated

Allium cepa L. var. cepa · Onion

NUNZA BV

ES NL
3 records

Ibis

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

CZ NL
4 records

Taresco

Active

Allium cepa L. var. cepa · Onion

Nickerson Zwaan B.V. (NL)

HR NL
3 records

Thunderstone

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

NL
4 records

Hytech

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V.

NL PL
3 records

Aspen

Terminated

Allium cepa L. var. cepa · Onion

Seminis Vegetable Seeds

ES NL
3 records

Taurus

Terminated

Allium cepa L. var. cepa · Onion

Asgrow Seed Company (US)

CZ FR
3 records

Venecia

Active

Allium cepa L. var. cepa · Onion

BEJO ZADEN BV, NL / DE GROOT EN SLOT B.V., NL

NL
4 records

Lovito

Active

Allium cepa L. var. cepa · Onion

Bayer Holland B.V. (NL)

FR NL
3 records

Safrane

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

HR NL
3 records

Talon

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden BV (NL)

HR NL
3 records

Pegase

Active

Allium cepa L. var. cepa · Onion

SAKATA VEGETABLES EUROPE SAS

ES FR
3 records