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Diseases

Alternaria Leaf Blight of Carrot

Daucus carota L.

A complex of carrot diseases caused by the fungi Alternaria dauci (leaf blight) and Alternaria radicina (black rot), characterized by polygenic resistance and the need for pathogen differentiation in breeding.

In the reference 185 varieties crop Carrot, where this is mentioned in the description.

The causal agent of leaf blight, Alternaria dauci, infects carrot foliage, manifesting as dark brown or black necrotic spots with a chlorotic halo, which, under high humidity, leads to mass leaf dieback. Alternaria radicina is the causal agent of black rot, which affects seedlings in the manner of damping-off and forms deep, dark, sunken lesions on root crops during storage.

Carrot resistance to this pathocomplex is polygenic in nature, with the term tolerance being more frequently used in breeding to account for the influence of interallelic interactions and environmental factors. In professional documentation, codes Ad for Alternaria dauci and Ar for Alternaria radicina are used to denote resistance to the pathogens, although there is no clear classification into pathogen races.

General information about the subject — on the page Alternaria blight.

Sources8

Varieties of Carrot 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.

SV 5300 DN

Active

Daucus carota L. · Carrot

Seminis Vegetable Seeds

NL
7 records

SV 7381 DH

Active

Daucus carota L. · Carrot

LAURA MAUPIN

UA
5 records

Napoli

Active

Daucus carota L. · Carrot

Bejo Zaden, NL

BG CZ HR HU LT NL +3
17 records

Boléro

Active

Daucus carota L. · Carrot

Vilmorin, F

BG CZ FR HR HU PL +2
20 records

Niagara

Active

Daucus carota L. · Carrot

Ger Beemsterboer

CZ HR NL PL SK UA
16 records

Maestro

Active

Daucus carota L. · Carrot

Vilmorin, F

CZ FR HR HU PL SK
16 records

Allyance

Active

Daucus carota L. · Carrot

ROGER FREEMAN

NL UA
24 records

Brillyance

Active

Daucus carota L. · Carrot

Robert Oostveen

NL UA
19 records

Scarla

Active

Daucus carota L. · Carrot

Robert Priieur

CZ ES FR HR HU PL +2
12 records

Narbonne

Active

Daucus carota L. · Carrot

Bejo Zaden B.V.

BG CZ HU LT NL PL +2
12 records

Mokum

Active

Daucus carota L. · Carrot

Bejo Zaden BV, NL-1749 ZH Warmenhuizen

CZ HR HU LT NL SI +1
12 records

Champion

Active

Daucus carota L. · Carrot

Syngenta Seeds B.V.

BG CZ LT NL PL SK +1
11 records

Sirkana

Active

Daucus carota L. · Carrot

Nunhems Zaden BV (NL)

FR HU NL PL UA
12 records

Vita Longa

Active

Daucus carota L. · Carrot

Bejo Zaden, NL

CZ HR HU NL PL SI
10 records

Monanta

Active

Daucus carota L. · Carrot

Yurhen Berh

CZ HR LT NL PL UA
10 records

Dordogne

Active

Daucus carota L. · Carrot

Syngenta Seeds, NL

HR NL PL
10 records

Soprano

Active

Daucus carota L. · Carrot

Vilomorin, F

FR HR
11 records

Natuna

Active

Daucus carota L. · Carrot

Ger Beemsterboer

NL UA
12 records

Napa

Active

Daucus carota L. · Carrot

Bejo Zaden BV (NL)

CZ HR HU LT NL PL +1
9 records

Nevis

Active

Daucus carota L. · Carrot

Bejo Zaden BV (NL)

CZ HR HU NL PL SK
10 records

Siroco

Active

Daucus carota L. · Carrot

Vilmorin SA (FR)

CZ FR HU PL
11 records

Naval

Active

Daucus carota L. · Carrot

Ger Beemsterboer

HR NL UA
9 records

Elegance

Active

Daucus carota L. · Carrot

NUNHEMS BV, NL

NL PL UA
9 records

Romance

Active

Daucus carota L. · Carrot

Paul Degreef

NL UA
13 records