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FREEZING WOODY PLANT STEMS PRODUCES ACOUSTIC EMISSIONS.

Author(s) : WEISER R. L., WALLNER S. J.

Type of article: Article

Summary

FREEZING WOODY STEM SEGMENTS OF SUPERCOOLING AND NON-SUPERCOOLING SPECIES RESULTED IN ACOUSTIC EMISSIONS IN CHARACTERISTIC REPRODUCIBLE PATTERNS. IN THE SUPERCOOLING SPECIES EXAMINED (FRAXINUS, MALUS AND PYRUS), MANY ACOUSTIC EMISSIONS BEGAN AFTER EXTRACELLULAR FREEZING, BUT BEFORE FREEZING OF THE SUPERCOOLED FRACTION, AND ENDED NEAR 233 K (-40 DEG C). ACOUSTIC EMISSIONS ALSO OCCURRED IN SPECIES THAT DID NOT SUPERCOOL (PINUS AND CORNUS), BUT TO A MUCH LESSER EXTENT. CAVITATION OF WATER WITHIN THE CELLS DURING FREEZING IS DISCUSSED AS A SOURCE OF ACOUSTIC EMISSIONS AND POSSIBLE CAUSE OF FREEZING INJURY.

Details

  • Original title: FREEZING WOODY PLANT STEMS PRODUCES ACOUSTIC EMISSIONS.
  • Record ID : 1989-0574
  • Languages: English
  • Source: J. am. Soc. hortic. Sci. - vol. 113 - n. 4
  • Publication date: 1988/07
  • Document available for consultation in the library of the IIR headquarters only.

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