Donacion
ActiveLilium L. · Lily
Testcentrum voor Siergewassen B.V.
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.
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
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.
Buriano
ActiveLilium L. · Lily
Vletter & Den Haan Beheer B.V
Costa Blanca
ActiveHippeastrum Herb. · Amaryllis
Marco Penning
Black Charm
ActiveLilium L. · Lily
Van Zanten Flowerbulbs B.V
Cevennes
ActiveLilium L. · Lily
Vletter & Den Haan Beheer B.V
Diantha
ActiveLilium L. · Lily
Vletter & Den Haan Beheer B.V
Caserta
ActiveLilium L. · Lily
Vletter & Den Haan Beheer B.V
Cantate
ActiveGladiolus L. · Gladiolus
Coöperatieve Kwekersvereniging “Horizon” U.A.
Casablanca
ActiveHippeastrum Herb. · Amaryllis
Penning Breeding B.V.
Bocelli
ActiveGladiolus L. · Gladiolus
Testcentrum voor Siergewassen B.V.
Costa
ActiveGladiolus L. · Gladiolus
Coöperatieve Kwekersvereniging "For Ever" U.A.
Charlotte
ActiveGladiolus L. · Gladiolus
Coöperatieve Kwekersvereniging "For Ever" U.A.
Challenger
ActiveHippeastrum Herb. · Amaryllis
Penning Breeding B.V.
Aqua
ActiveHyacinthus orientalis L. · Common hyacinth
Testcentrum voor Siergewassen B.V.
Bendigo
ActiveLilium L. · Lily
Van Zanten Flowerbulbs B.V
Armandale
ActiveLilium L. · Lily
Van Zanten Flowerbulbs B.V
Balentino
ActiveHippeastrum Herb. · Amaryllis
Barnhoorn Hippeastrum
Alasca
ActiveHippeastrum Herb. · Amaryllis
Barnhoorn Hippeastrum
Aswan
ActiveTulipa L. · Tulip
Hybris B.V.
Amistad
ActiveLilium L. · Lily
Vletter & Den Haan Beheer B.V
Amandi
ActiveNerine bowdenii W. Watson · Corn lily
Agrofleur Select B.V.
Amadeus Candy
ActiveHippeastrum Herb. · Amaryllis
Ben van Geest
Akiko
ActiveHippeastrum Herb. · Amaryllis
Isamu Miyake
Adagio
ActiveGladiolus L. · Gladiolus
Coöperatieve Kwekersvereniging “Horizon” U.A.