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Variety traits

Fennel leaf base thickening

Foeniculum vulgare Mill.

In vegetable fennel, the 'bulb' is a pseudo-stem formed by overlapping fleshy leaf petiole bases. It is a morphologically dense thickening whose quality is determined by the absence of cavities and mass at market maturity.

In the reference 33 varieties crop Fennel, where this is mentioned in the description.

Morphological thickening is characteristic exclusively of the vegetable fennel variety and is formed due to the expansion of leaf petioles. During variety testing, the shape, mass, and diameter of this organ are evaluated, as well as its density and lack of tendency to crack. The marketable mass of a single thickening in breeding varieties usually ranges from 150–200 g.

The expression of the trait directly depends on agricultural practices and genetic resistance to bolting. As the plant transitions to flowering, the growth of the thickening ceases and its tissues become coarse, which reduces market quality. To obtain a tender, blanched product, hilling is required, as well as maintaining an optimal water balance, since moisture deficit or damage to the taproot suppresses the formation of a proper 'bulb'.

General information about the subject — on the page Bulb.

Sources8

Varieties of Fennel 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.

Terenzio

Active

Foeniculum vulgare Mill. · Fennel

Enza Zaden Beheer B.V.

NL
4 records

Orazio

Active

Foeniculum vulgare Mill. · Fennel

Bejo Zaden B.V.

NL
3 records

Spartaco

Active

Foeniculum vulgare Mill. · Fennel

Clause Tezier, FR

FR
2 records

Vero

Active

Foeniculum vulgare Mill. · Fennel

LA SEMIORTO SEMENTI SRL

IT
2 records

Tenore

Active

Foeniculum vulgare Mill. · Fennel

VIVOSEM S.R.L.

IT
2 records

Enea

Active

Foeniculum vulgare Mill. · Fennel

CORA SEEDS S.R.L

IT
2 records

Serpico

Terminated

Foeniculum vulgare Mill. · Fennel

Clause Tezier, FR

FR
2 records

Antares

Active

Foeniculum vulgare Mill. · Fennel

Bejo Zaden B.V.

NL
4 records

Vasari

Active

Foeniculum vulgare Mill. · Fennel

HM Clause SAS (FR)

FR
2 records

Finale

Active

Foeniculum vulgare Mill. · Fennel

Friedemann Ebner in Fa. Nunhems Germany GmbH

DE
3 records

Sirente

Active

Foeniculum vulgare Mill. · Fennel

Monsanto Vegetable IP Management B.V.

NL
4 records

Dover

Terminated

Foeniculum vulgare Mill. · Fennel

ASGROW SEED COMPANY

IT
2 records

Clodio

Active

Foeniculum vulgare Mill. · Fennel

Enza Zaden Beheer B.V.

NL
3 records

Bravo

Terminated

Foeniculum vulgare Mill. · Fennel

Clause Semences SA (FR)

FR
2 records

Tullio

Active

Foeniculum vulgare Mill. · Fennel

Enza Zaden Beheer B.V.

NL
4 records

Bola

Active

Foeniculum vulgare Mill. · Fennel

NL
3 records

Crono

Active

Foeniculum vulgare Mill. · Fennel

HU
3 records

Chiarino

Active

Foeniculum vulgare Mill. · Fennel

IT
3 records

Latina

Active

Foeniculum vulgare Mill. · Fennel

ES FR
3 records

Sirio

Terminated

Foeniculum vulgare Mill. · Fennel

IT
2 records

Fenno

Active

Foeniculum vulgare Mill. · Fennel

DE
2 records

Sampo

Active

Foeniculum vulgare Mill. · Fennel

DE
3 records