Search Results

You are looking at 1 - 3 of 3 items for :

  • Author or Editor: C. Willemot x
  • HortScience x
Clear All Modify Search

Mature-green `Vedette' tomato (Lycopersicon esculentum Mill.) fruit were stored with (+P) or without (-P) peduncles at 1C. During storage and after return to ambient temperature, pigment content and electrolyte leakage of pericarp tissue and fruit internal atmosphere composition were monitored. The +P fruit showed severe chilling injury (CI) symptoms-shriveling and brown discoloration of the surface-on transfer to 20C after at least 8 days of exposure to low temperature. The chilling-injured fruit did not ripen normally; i.e., pigmentation did not change at 20C. The -P fruit were largely unaffected and ripened normally at 20C. Severely injured tomatoes showed an apparent decrease in electrolyte leakage after transfer to ambient temperature. The CO, content of the -P fruit internal atmosphere was significantly lower than in +P tomatoes after return to 20C. The peduncle scar has a greater permeability to gases than the skin and facilitates gas exchange with the external atmosphere. The accumulation of CO, in the internal atmosphere of the chilled +P fruit after transfer to 20C apparently promoted CI symptom development.

Free access

The objective of this study was to compare the effects of the foliar application of CaCl2 on the shelf life and Ca content of the fruit of the strawberry (Fragaria × ananassa) cultivars Kent and Glooscap, which differ in fruit firmness. Calcium was applied repeatedly, 3 days, 3 and 6 days, or 3, 6, and 9 days before harvest at 0, 10, or 20 kg·ha-1. Calcium treatment influenced amounts of free sugars and organic acids, color, texture, and disease development during storage in air at 4C. Calcium application had more effect on the fruit of the softer `Glooscap', which contained relatively low levels of Ca at the time of treatment. Calcium content of the fruit appeared to depend mainly on the ability of the plant to accumulate and distribute Ca.

Free access


Controlled atmosphere (CA) conditions were assessed for long-term broccoli (Brassica oleracea L. Italica Group) storage. Broccoli was stored for 6 weeks at 1C under N2 containing the following percentages of CO2/O2: 0%/20%; 10%/20%; 6%/2.5%; I0%/2.5%; and 15%/2.5%. Color and chlorophyll retention was better under CA than in air. This improved retention was mainly due to increased CO2 concentration. Storage under CA also delayed the development of soft rot and mold. However, after 6 weeks of storage under an atmosphere containing 10% or more CO2, the rate of respiration increased simultaneously with the development of undesirable odors and physiological injury. Among the atmospheres tested, 6% CO2 and 2.5% O2 was the best for long-term (>3 weeks) maintenance of broccoli quality while avoiding physiological injury.

Open Access