Skip to content
agronom.cc cultivar database

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.

Zanlophator

Active

Lilium L. · Lily

KONINKLIJKE VAN ZANTEN B.V.

2 records

Touch Me

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

White Rascal

Active

Hippeastrum Herb. · Amaryllis

Barnhoorn Hippeastrum

2 records

White Amadeus

Active

Hippeastrum Herb. · Amaryllis

Ben van Geest

2 records

Toba

Active

Lilium L. · Lily

Van Zanten Flowerbulbs B.V

2 records

White Garden

Active

Hippeastrum Herb. · Amaryllis

Ben van Geest

2 records

Sundew

Active

Lilium L. · Lily

Testcentrum voor Siergewassen B.V.

2 records

Sugar Babe

Active

Gladiolus L. · Gladiolus

Coöperatieve Kwekersvereniging "For Ever" U.A.

2 records

Sunny Bonaire

Active

Lilium L. · Lily

Mak Breeding Rights B.V.

2 records

Tineke Verburg

Active

Hippeastrum Herb. · Amaryllis

Penning Breeding B.V.

2 records

Splash

Active

Hippeastrum Herb. · Amaryllis

Ben van Geest

2 records

Swan Lake

Active

Hippeastrum Herb. · Amaryllis

Barnhoorn Hippeastrum

2 records

Spartacus

Active

Hippeastrum Herb. · Amaryllis

Ben van Geest

2 records

Spotlight

Active

Hippeastrum Herb. · Amaryllis

Ben van Geest

2 records

Siberia

Active

Hippeastrum Herb. · Amaryllis

Penning Breeding B.V.

2 records

San Siro

Active

Gladiolus L. · Gladiolus

Testcentrum voor Siergewassen B.V.

2 records

Socrates

Active

Gladiolus L. · Gladiolus

Testcentrum voor Siergewassen B.V.

2 records

Rotary

Active

Gladiolus L. · Gladiolus

Catharine J. Osselton^^^Testcentrum voor Siergewassen B.V.

2 records

Red Glory

Active

Hippeastrum Herb. · Amaryllis

Willem M.W. van Velden

2 records

Rodengo

Active

Lilium L. · Lily

Vletter & Den Haan Beheer B.V

2 records

Royal Class

Active

Gladiolus L. · Gladiolus

Coöperatieve Kwekersvereniging "For Ever" U.A.

2 records

Jump to page 16 31 32 48 51 63 79 95