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Variety traits

Uniformity — Onion

Allium cepa L. var. cepa

Onion uniformity is a key morphological trait that determines the consistency of bulbs in terms of size, shape, and plant maturation rate, which is essential for mechanized harvesting and commercial sorting.

In the reference 30 varieties crop Onion, where this is mentioned in the description.

When assessing onion uniformity, bulb caliber and geometry are taken into account, as well as the synchronicity of plants entering the leaf senescence phase. High uniformity means that the bulk of the harvest is homogeneous, which is critical for minimizing losses during mechanized harvesting and reducing costs associated with manual post-harvest processing.

In scientific research, the degree of uniformity of quantitative traits is determined using the coefficient of variation, where low values indicate high population homogeneity. In practice, commercial uniformity is evaluated through the distribution of produce into fractions based on bulb diameter in accordance with current standards.

General information about the subject — on the page Uniformity.

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.

Allium cepa L. var. cepa · Onion

ALLIUM SEEDS UK LTD

NL
2 records

Storo

Application submitted

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

NL
3 records

Allium cepa L. var. cepa · Onion

Nunhems B.V.

NL
2 records

Manesco

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

NL
4 records

Allium cepa L. var. cepa · Onion

CROOKHAM COMPANY

NL
3 records

Elsye

Active

Allium cepa L. var. cepa · Onion

Enza Zaden Beheer B.V.

NL
3 records

Sirius

Active

Allium cepa L. var. cepa · Onion

Enza Zaden Beheer B.V.

NL
2 records

Tacana

Active

Allium cepa L. var. cepa · Onion

Bayer Holland B.V.

NL
3 records

Sopelek

Active

Allium cepa L. var. cepa · Onion

TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.

PL
3 records

Chico

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

NL
3 records

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V., De Groot en Slot B.V.

NL
3 records

SV4043NM

Active

Allium cepa L. var. cepa · Onion

Bayer Holland B.V.

NL
2 records

Octavia

Active

Allium cepa L. var. cepa · Onion

TORSEED - Przedsiebiorstwo Nasiennictwa Ogrodniczego i Szkolkarstwa S.A.

PL
3 records

Galaxia

Active

Allium cepa L. var. cepa · Onion

SEMILLAS FITO, S.A.

ES
2 records

Allium cepa L. var. cepa · Onion

Nunhems B.V.

NL
2 records

Majka

Active

Allium cepa L. var. cepa · Onion

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

PL
3 records

Sumatra

Active

Allium cepa L. var. cepa · Onion

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

PL
2 records

Reks

Active

Allium cepa L. var. cepa · Onion

TAKII & CO LTD

NL
3 records

Redshine

Active

Allium cepa L. var. cepa · Onion

Hazera Seeds B.V.

NL
3 records

Allium cepa L. var. cepa · Onion

ALLIUM SEEDS UK LTD

NL
2 records

Red Silk

Active

Allium cepa L. var. cepa · Onion

Bejo Zaden B.V.

NL
3 records

Codal

Active

Allium cepa L. var. cepa · Onion

Bayer Holland B.V.

NL
3 records

Allium cepa L. var. cepa · Onion

CROOKHAM COMPANY

NL
2 records

Cirrus

Active

Allium cepa L. var. cepa · Onion

SEMINIS INC

ES
2 records