Tree Fruit Research & Extension Center

Cullage Assessment & Education

Quick Identification Guide to Apple Postharvest Defects & Disorders

Physiological Disorders

The Physiological Disorders section of the card set includes most the common disorders of physiological origins found during the sorting and packing of Washington apples. Bitter pit, scalds and lenticel conditions are just a few of the items presented in this section. At a later date more cards may be developed for this section which would include any emerging or reclassified disorders. For ordering information visit the Order Information section of the Introduction. The cards shown on this site are slightly modified to accomodate web formatting. Figures may appear fragmented in some browsers. Please report viewing problems here. Any reproduction of the card images or content without permission is in violation of WSU Copyright policies.

 

 

PHYSIOLOGICAL: Chilling Injury   

Chilling damage

Fruit stored below their tolerance point may show a variety of symptoms depending on the cultivar, temperature, and duration of storage at the adverse temperature. Symptoms may vary from browning of the skin to deep flesh browning and translucency. Dry internal cavities and flesh browning may also develop. Fruit also may have a bitter taste and smell of fermentation upon cutting.

Figure 1: A Red Delicious apple showing external browning and skin translucency constistant with chilling injury.

 

 

 

 

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