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Explores frost injury impacts on strawberry leaves and receptacles, highlighting vulnerability in blossoms.
Simulation tests of spring frost in strawberry (Fragaria ananassa) leaves and receptacles involved use of an artificial climate chamber. Leaves could tolerate intercellular freezing to some extent. At a tissue temperature of -6.4 ℃, leaves could survive 90-min freezing, but receptacles were not able to tolerate intercellular freezing. Receptacles resisted frost injury by maintaining a state of supercooling to avoid freezing. The proportion of receptacles injured was inversely related to decreased receptacle temperature, reaching 50% at -5.4 ℃. Full-blossom flowers and those with heavier fresh weight were susceptible to frost injury even at higher temperatures.
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Xiu-li et al. (2005) studied this question.
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