Abstract:To explore diversity in cold hardiness mechanisms, high resolution
magnetic resonance imaging (MRI) was used to visualize freezing
behaviors in wintering flower buds of Daphne kamtschatica var.
jezoensis, which have no bud scales surrounding well-developed
florets. MRI images showed that anthers remained stably supercooled to
-14 ∼ -21°C or lower whilst most other tissues froze by -7°C. Freezing
of some anthers detected in MRI images at ∼ -21°C corresponded with
numerous low temperature exotherms and also with… Show more
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