Freezing of xylem sap without cavitation.

@article{Hammel1967FreezingOX,
  title={Freezing of xylem sap without cavitation.},
  author={Harold T. Hammel},
  journal={Plant physiology},
  year={1967},
  volume={42 1},
  pages={55-66}
}
Freezing of stem sections and entire twigs of hemlock (Tsuga canadensis) has been demonstrated to occur without increasing the resistance to the movement of water through the frozen part after rewarming. This was interpreted to mean that freezing did not produce cavitation in the xylem sap even though A) the sap was unquestionably frozen; B) it contained dissolved gases; and C) it was under tension before freezing and after. Freezing stem sections of some other evergreen gymnosperms during the… CONTINUE READING

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