Abstract
AbstractAnalysis of cabbages grown on the same plot at Greenford (Middlesex) from seed of both English and South African varieties revealed that, in general, the English varieties had higher concentrations of vitamin C. Results of a similar experiment, with a smaller number of plants, at two places in South Africa tended to confirm this conclusion. Agreement between the results from the two places was sufficiently good to indicate that location had little or no influence. Unusually high concentrations of dehydroascorbic acid, probably caused by some seasonal effect, were found in the cabbages grown at Greenford. English spring cabbages grown in South Africa, under the same conditions as the other varieties, showed vitamin C contents of the same order, whereas in England, in previous seasons, it has been found that spring cabbages contain a higher concentration of vitamin C than those harvested in summer and winter.
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