Variety traits

Bulb

The bulb is a storage organ of the plant that determines the commercial value of a cultivar through a combination of morphological and biological characteristics. It is evaluated by mass, number of bulbs per cluster, number of growing points, shape, and qualitative indicators of keeping quality and…

Mentioned in descriptions 7 519 varieties reference book.

The bulb is a storage organ of the plant, the parameters of which are key varietal traits when assessing crop marketability. The main morphological characteristics include bulb mass, its shape, defined as the ratio of height to diameter, as well as the color of dry and succulent scales and neck thickness. Important biological indicators are the number of bulbs per cluster, which characterizes the ability to form several bulbs from a single basal plate, and the number of growing points, which reflects the number of buds.

Evaluation of these traits during variety testing is carried out through biometric analysis, laboratory determination of sugar and dry matter content, and the study of keeping quality and taste. Bulb mass and shape depend directly on agronomic conditions: planting density, cultivation method, and availability of mineral nutrients. Bulb uniformity in size is an important advantage, as it facilitates the mechanization of harvesting and pre-sale preparation processes.

Cultivar resistance and productivity are predetermined by genetically fixed features of the number of growing points and the number of bulbs per cluster. For bulb onion varieties, a low number of bulbs per cluster is preferred, which allows for obtaining large marketable produce, whereas a high number of bulbs per cluster is characteristic of certain species, for example, shallots. Bulb quality also includes its ability to retain commercial appearance during storage, which is assessed during special tests for resistance to rot and general keeping quality.

Sources10

Breakdown by crop

Bulb — Onion 691 Bulb — Onion 508 Lily bulb 216 Tulip bulb 185 Garlic bulb 157 Hippeastrum bulb 144 Gladiolus corm 119 Shallot Bulb 72 Leek bulb 54 Bulb — Welsh onion 41 Fennel leaf base thickening 33 Freesia corm 21 Fritillaria bulb 14 Iris bulb 11 Shallot bulb 10 Lachenalia bulb 8 Zantedeschia tuber 8 Narcissus bulb 7 Hyacinthus orientalis bulb 7 Muscari bulb 6 Ornamental Allium Bulb 6 Eucomis l'Her. bulb 5 Crocus corm 4 Corm — Crocosmia 4

Found in these crops

Onion 698 Onion 512 Lily 238 Tulip 209 Garlic 180 Amaryllis 146 Gladiolus 128 Fennel 102 Shallot 74 Leek 64 Welsh onion 41 Iris 36

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Stirling

Active

Allium cepa L. var. cepa · Onion

ALLIUM SEEDS UK LTD

2 records

Stamford F1

Application submitted

Allium cepa L. · Onion

Thaam Wiynker

2 records

Snowhill

Active

Tulipa L. · Tulip

G. Buis Bloembollen B.V.

1 record

Stalker

Application submitted

Allium cepa L. · Onion

Dymchenko, Tetiana Muzhylko, Viktor

1 record

Slipstream

Active

Lilium L. · Lily

Laan Flora Facilities B.V.

1 record

Slawa Ozarowa

Application submitted

Allium cepa L. · Onion

Henrikh IUst

2 records

Soprano

Active

Tulipa L. · Tulip

Testcentrum voor Siergewassen B.V.

1 record

Spirit F1

Terminated

Allium cepa L. · Onion

Her Bemsdeburh

1 record

Skaldis F1

Withdrawn

Allium cepa L. · Onion

Will van Haerke

2 records

Sirocco

Active

Tulipa L. · Tulip

G. Buis Bloembollen B.V.

1 record

Snow Queen

Withdrawn

Hippeastrum Herb. · Amaryllis

Zuidgeest Honselersdijk

3 records

Sierra Blanka F1/Serra Blanka F1

Active

Allium cepa L. · Onion

Hari Besels

1 record

Skarlet/Skarlet

Terminated

Allium cepa L. · Onion

Yezhy Matchak, Yadviha Tomchak, Yezhy Matchak,

1 record

Sierra

Active

Gladiolus L. · Gladiolus

Koomen Bloembollen-Ens/Balk Innovation B.V.

1 record

Simcoe

Terminated

Allium cepa L. · Onion

SUNSEEDS

1 record

Showcase

Active

Tulipa L. · Tulip

W. van Lierop & Zonen B.V.

1 record

Shining Star

Active

Hippeastrum Herb. · Amaryllis

Park Amaryllis V.O.F.

1 record

Shtutti

Active

Allium cepa L. · Onion

Herrit Vlaar, Lakusta Vasyl` Samsonovych,

2 records

Sherman F1

Terminated

Allium cepa L. · Onion

Ger Beemsterboer

1 record

Sissi

Active

Hippeastrum Herb. · Amaryllis

Park Amaryllis V.O.F.

1 record

SG8444

Application submitted

Allium cepa L. · Onion

Syngenta Crop Protection AG

1 record

Sensi

Active

Lilium L. · Lily

World Breeding B.V

1 record

Sebola F1

Terminated

Allium cepa L. · Onion

Zuhair Bibi

1 record

Shanghai

Active

Iris L. · Iris

World Flower B.V.

1 record

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Variety traits

Maturity group 89 063
Yield 67 000
Vigor 53 548
Plant height 51 504
Lodging 50 198
Taste and aroma 36 010
Variety origin 29 523
Productivity 27 845

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.