Abstract

1. McIntosh apples respired approximately one-third as fast in controlled-atmosphere storage at 40⚬ F. as in ordinary cold storage at 32⚬ F. The residual effect of controlled-atmosphere storage on apples after their removal to high temperatures can be partially explained by a reduction in respiration rate following the storage treatment. The residual effect cannot be accounted for by persistence of a high carbon dioxide level in the tissues of the fruit. 2. McIntosh held in cold storage at 32⚬ F. evolved two and one-half to three times as much carbon dioxide during the same time period in storage as controlled-atmosphere fruit. The value and limitations of cumulative respiration curves for this type of study are indicated.

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