Variety traits

Shallot bulb

Allium ascalonicum L.

The shallot bulb is the primary object of breeding evaluation, with key traits including clustering, weight, and scale density, which determine the crop's yield and storage quality.

In the reference 10 varieties crop Shallot, where this is mentioned in the description.

Shallots are characterized by the ability of the mother bulb to divide into daughter bulbs, a trait evaluated by the clustering index. High clustering is defined as the formation of 8–9 or more daughter bulbs in a single cluster, which directly influences the propagation rate and the yield of planting material, though it may contribute to a reduction in the size of marketable produce.

The typical weight of a shallot bulb ranges from 20 to 50 g, with a diameter of up to 6 cm. Values exceeding these figures often indicate interspecific hybridization with common onion (Allium cepa). An important breeding criterion is the density of the outer scales, which ensures high storability and resistance to storage diseases.

General information about the subject — on the page Bulb.

Sources8

Varieties of Shallot 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.