Variety traits

Bloom — european plum, gage, garden plum, plum, prune plum

Prunus domestica L. subsp. domestica

An important morphological trait of plum fruits that influences their shelf life, resistance to pathogens, and marketability.

In the reference 13 varieties crop Plum, where this is mentioned in the description.

The bloom on the surface of European plum fruits is a key varietal characteristic, the intensity of which is assessed using nine-point UPOV scales or instrumental methods, such as gloss meters and profilometry. A heavy bloom gives fruits a characteristic matte glaucous hue, whereas its absence makes the skin glossy.

This layer serves as a primary barrier to transpiration, ensuring the preservation of mass and marketability during storage. Its integrity is critical during mechanized harvesting, as mechanical abrasion of the wax leads to a loss of aesthetic appeal and increases susceptibility to fungal infections, including moniliosis. In addition to protective functions, the structure of the bloom determines the optical properties of the skin, participating in the formation of blue and purple fruit shades.

General information about the subject — on the page Waxy bloom.

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Prunus domestica L. subsp. domestica · Plum

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