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Variety traits

Leek bulb

Allium porrum L.

In leeks, a true bulb does not form; instead, it is replaced by a false stem, or 'shank,' consisting of tightly overlapping leaf sheaths. This organ is the plant's primary productive element, with quality determined by the length and diameter of the blanched portion.

In the reference 54 varieties crop Leek, where this is mentioned in the description.

The false bulb is a cylindrical organ formed by leaf bases that create a dense structure when tightly packed. At the base of the plant, some varieties may develop a slight thickening, the degree of which serves as a selection trait.

When assessing market quality, key parameters include the length and cross-sectional diameter of the false stem. The standard length of the blanched portion ranges from 10 to 60 cm, and the diameter varies from 2 to 7 cm, with the minimum acceptable market diameter being 8 mm.

The agronomy of the crop focuses on maximizing the development of the 'shank' and its blanching, which is achieved through hilling to protect the leaf bases from light. Inadequate cultivation conditions, including lack of moisture or failure to hill, lead to the coarsening and thinning of the false stem.

General information about the subject — on the page Bulb.

Sources8

Varieties of Leek 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.

Lancelot

Active

Allium porrum L. · Leek

Bejo Zaden BV, NL-1749 ZH Warmenhuizen

CZ HR HU NL PL
11 records

Lincoln

Active

Allium porrum L. · Leek

Bejo Zaden, NL

CY CZ HU NL PL SI
10 records

Bulgaarse Reuzen

Active

Allium porrum L. · Leek

Bejo Zaden BV (NL)

BG CZ HR HU PL SI +1
11 records

Pancho

Active

Allium porrum L. · Leek

Nickerson Zwaan B.V. (NL)

CZ HR HU NL PL SK
8 records

Prelina

Active

Allium porrum L. · Leek

Syngenta Seeds B.V.

CZ HU LT NL PL SK
8 records

Bandit

Active

Allium porrum L. · Leek

Ger Bimsdeboer

CZ HU NL PL SI UA
8 records

Tango

Active

Allium porrum L. · Leek

Moravoseed Spol. S.r.o

CZ DK PL SK
7 records

Merlin

Active

Allium porrum L. · Leek

Bejo Zaden B.V.

CZ HU LT NL PL SI
6 records

Armor

Active

Allium porrum L. · Leek

Tezier SA (FR)

FR HR
5 records

Renova

Terminated

Allium porrum L. · Leek

Lantmannen SW Seed AB, SE-268 81 Svalof

DK NL SE
5 records

Farinto

Active

Allium porrum L. · Leek

Nunhems BV (NL)

HR HU NL PL
4 records

Striker

Application submitted

Allium porrum L. · Leek

Bejo Zaden BV (NL)

HR NL
4 records

Kilima

Active

Allium porrum L. · Leek

CZ ES NL
4 records

Electra

Active

Allium porrum L. · Leek

HM.CLAUSE

FR
3 records

Volta

Active

Allium porrum L. · Leek

VEGETABLE MONSANTO B.V.

NL
3 records

Canterbury

Active

Allium porrum L. · Leek

TOZER SEEDS LTD

PL
3 records

Conora

Terminated

Allium porrum L. · Leek

L. DÆHNFELDT A/S

DK PL
3 records

Bowler

Active

Allium porrum L. · Leek

BEJO ZADEN

NL
4 records

Lancaster

Active

Allium porrum L. · Leek

TOZER SEEDS LTD

NL
3 records

Takrima

Active

Allium porrum L. · Leek

Enza Zaden Beheer B.V.

NL
4 records

Artemis

Terminated

Allium porrum L. · Leek

Syngenta Seeds B.V.

NL PL
3 records

Climber

Active

Allium porrum L. · Leek

BEJO ZADEN

NL
4 records