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- Title
Evaluation of freezing injury and freeze-thaw injury to membranes of Saskatoon serviceberry twigs by measuring HCN release.
- Authors
Stout, Darryl G.
- Abstract
The influence of thawing on freeze-injured Saskatoon serviceberry (Amelanchier alnifolia Nutt.) twigs was evaluated by refreezing freeze-thawed twigs and comparing the HCN release at -5°C fro these twigs to the HCN release at -5°C from twigs that had not been thawed. An effect of thawing depended on the physiological state of the twigs, on the degree of freezing stress, or on both. Manifestation of membrane injury does not have an absolute dependence on thawing. Post-thaw temperature influences manifestation of injury, since twigs warmed to 30°C released more HCN than twigs warmed to 1°C when refrozen to -5°C Although thawing and post-thaw conditions can influence the magnitude of membrane injury, the critical event leading to injury occurs while plants are frozen.
- Subjects
THAWING; SASKATOON serviceberry; EFFECT of freezes on plants; CELL membranes; TWIGS; ACCLIMATIZATION; LOW temperatures
- Publication
Physiologia Plantarum, 1983, Vol 57, Issue 4, p573
- ISSN
0031-9317
- Publication type
Article
- DOI
10.1111/j.1399-3054.1983.tb02788.x