Variety traits
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.
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
Bejo Zaden B.V.
Allium cepa L. var. cepa · Onion
Seminis Vegetable Seeds
Allium cepa L. var. cepa · Onion
Seminis Vegetable Seeds
Allium cepa L. var. cepa · Onion
O'CONNOR DAVID
Allium cepa L. var. cepa · Onion
Hazera Seeds B.V.
Allium cepa L. var. cepa · Onion
Bejo Zaden BV (NL)
Allium cepa L. var. cepa · Onion
Takii & Company LTD (JP)
Allium cepa L. var. cepa · Onion
Takii & Company Ltd
Allium cepa L. var. cepa · Onion
TAKII EUROPE B V
Allium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Allium cepa L. var. cepa · Onion
TAKII EUROPE B V
Allium cepa L. var. cepa · Onion
Bayer Holland B.V.
Allium cepa L. var. cepa · Onion
SAKATA VEGETABLES EUROPE SAS
Allium cepa L. var. cepa · Onion
Hazera Seeds B.V.
Allium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
Allium cepa L. var. cepa · Onion
Syngenta Crop Protection AG
Allium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
Allium cepa L. var. cepa · Onion
EM Key & Son Ltd (GB)
Allium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
Allium cepa L. var. cepa · Onion
CROOKHAM COMPANY
Allium cepa L. var. cepa · Onion
RAMIRO ARNEDO, S.A.
Allium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Allium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
Allium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.