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The effects of dehydration on freezing injury in a range of carrot cultivars
Author(s) -
TUCKER W. G.,
COX C. J.
Publication year - 1978
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1978.tb02633.x
Subject(s) - cultivar , dehydration , hardiness (plants) , biology , ice formation , horticulture , botany , biochemistry , atmospheric sciences , geology
SUMMARY Carrot cultivars given a mild freezing treatment (–2.5°C for 16 h) showed significant differences in the amounts of external and internal ice formed and in the amounts of electrolytes diffusing from broken tissues after thawing. Dehydrating the carrots in vitro up to 9% loss of fresh weight decreased the formation of external ice in all cultivars but decreased internal ice formation only in the Chantenay and Autumn King cvs; internal ice formation in the Amsterdam Forcing cv. was unaffected by up to a 7% loss of fresh weight. Of the cultivars tested, the Chantenay cv. withstood the freezing treatments best and the Amsterdam Forcing cv. the least with the Autumn King cv. intermediate between the two. There was no indication of cold hardiness by a natural adjustment of the water content of the carrots in the field during the winter in any cultivar.