Variety traits

Apple Waxy Bloom

Malus Mill.

Apple waxy bloom is an epicuticular protective layer on the fruit skin that reduces transpiration, prevents pathogen penetration, and influences fruit shelf life during storage.

In the reference 18 varieties crop Apple, where this is mentioned in the description.

The thickness of the wax layer on apple fruits varies depending on varietal characteristics, ranging from 2.5 to 4.1 μm when measured microscopically. Wax accumulation is also quantified by mass per unit area, where for high-wax varieties, values reach 290–410 μg/cm².

The biological role of the layer lies in the regulation of moisture loss, which directly influences the fruit's susceptibility to shriveling during storage. The physical barrier of epicuticular wax also limits the penetration of fungal disease spores and correlates with resistance to the development of superficial scald.

In breeding practice, the intensity of the bloom is evaluated organoleptically as weak, medium, or intense, with characteristics described as "matte," "glossy," or "greasy." Compromising the integrity of this coating through mechanical impact leads to increased susceptibility of the fruit to post-harvest rots.

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

Sources8

Varieties of Apple 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.

Amorosa

Active

Malus Mill. · Apple

SVERIGES LANTBRUKSUNIVERSITÄTET

DK SE

4 records

Starkrimson Delicious

Application submitted

Malus Mill. · Apple

Bisbee, Roy A

3 records

Merrigold

Active

Malus Mill. · Apple

Merrill, Grant|deceased, 325 Breese Ave., late of Red Bluff, CA by Lucille B. Merrill, legal representative, 325 Breese Ave., Red Bluff, CA 96080

2 records