Louisa
TerminatedAllium cepa L. var. cepa · Onion
Enza Zaden Beheer B.V.
NL
3 records
Variety traits
Bulb — Onion
Allium cepa L. var. cepa
The main economically valuable organ of the onion, assessed by morphometric traits: size, weight, density, and shape index, which influence storage quality and suitability for mechanical harvesting.
In the reference 691 varieties crop Onion, where this is mentioned in the description.
For onions, the bulb is the primary object of evaluation, where the key parameters are size, determined by the maximum transverse diameter, and weight. Bulb shape is classified into six types — from flat to elongated — and is quantitatively expressed by the shape index, which represents the ratio of height to diameter.
Important agronomic characteristics include density and maturity, determined by the condition of the dry outer scales and the dried neck. Breeding also considers the trait of bulbil formation (nesting), where varieties that form a single bulb from the basal plate are preferred for commercial cultivation.
Technological quality indicators of the bulb include storability, determined by varietal traits, and dry matter content, which is important for industrial processing. Uniformity of bulbs in shape and weight is a critical factor for the efficiency of mechanical harvesting and grading.
General information about the subject — on the page Bulb.
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.
Rosanna
ActiveAllium cepa L. var. cepa · Onion
ALLIUM SEEDS UK LTD
NL
3 records
Mika
ActiveAllium cepa L. var. cepa · Onion
Hoza Zaden B.V.
NL
3 records
Calvera
ActiveAllium cepa L. var. cepa · Onion
TAKII & CO LTD
NL
2 records
Emerald Isle
Protection expiredAllium cepa L. var. cepa · Onion
Seminis Vegetable Seeds
ES
2 records
Colombina
Protection expiredAllium cepa L. var. cepa · Onion
VERA-AGRA SP. Z.O.O.
PL
2 records
Tornado
ActiveAllium cepa L. var. cepa · Onion
ALLIUM SEEDS UK LTD
NL
5 records
Yakama
ActiveAllium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
NL
3 records
Totana
ActiveAllium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
NL
3 records
Primo
TerminatedAllium cepa L. var. cepa · Onion
Domaine Public (FR)
FR
2 records
Sława Ożarowa
ActiveAllium cepa L. var. cepa · Onion
Instytut Ogrodnictwa - Państwowy Instytut Badawczy \Przedsiębiorstwo Nasiennictwa Ogrodniczego i Szkółkarstwa w Ożarowie Mazowieckim Spółka z o.o.
PL
3 records
Cordelia
ActiveAllium cepa L. var. cepa · Onion
MIRA SEEDS S.R.L.
PL
2 records
Harbour
ActiveAllium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
NL
3 records
Wega
TerminatedAllium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
PL
3 records
Ayoba
ActiveAllium cepa L. var. cepa · Onion
Bayer Holland B.V.
NL
2 records
Laskala
ActiveAllium cepa L. var. cepa · Onion
Landbruks- og matdepartementet, N - 0030 Oslo
Naranco
ActiveAllium cepa L. var. cepa · Onion
Bejo Zaden B.V., De Groot en Slot B.V.
NL
3 records
Extra-hâtif parisien
ActiveAllium cepa L. var. cepa · Onion
Domaine Public (FR)
FR
2 records
Sirio
ActiveAllium cepa L. var. cepa · Onion
RAMIRO ARNEDO, S.A.
ES
2 records
Morpheus
ActiveAllium cepa L. var. cepa · Onion
CROOKHAM COMPANY
NL
3 records
Hamaemi
ActiveAllium cepa L. var. cepa · Onion
KANEKO SEEDS CO LTD
NL
4 records
Polana
TerminatedAllium cepa L. var. cepa · Onion
PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
PL
2 records
Barbaro
TerminatedAllium cepa L. var. cepa · Onion
HORTAG SEED CO.
PL
3 records
Festival
Protection expiredAllium cepa L. var. cepa · Onion
CZ
NL
3 records