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Weight loss in sweet potatoes ipomoea batatas during curing and storage contribution of transpiration and respiration

Picha, D.H.

Journal of the American Society for Horticultural Science 111(6): 889-892

1986


ISSN/ISBN: 0003-1062
Accession: 006916126

Cured sweet potatoes [Ipomoea batatas (L.) Lam] were stored successfully at 15.6.degree. C and 90% RH for up to a year without sprouting. Contribution of respiration and transpiration to total weight loss was determined during curing and storage in 6 cultivars. Respiration rate was highest the day of harvest, decreased during curing, and continued to decrease at a slower rate during the first several months of storage, whereafter it remained constant (except for slight increases during the last several months in 2 cultivars). Respiration contributed more to total weight loss during the latter period of storage than during curing or the first months in storage. Transpiration, however, was the major source of weight loss. The highest rate of weight loss occurred during curing, followed by a gradual rate of loss during storage. Total weight loss of cured roots after 50 weeks of storage ranged from 6.7% ('Rojo Blanco') to 16.1% ('Travis').

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