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DEEP SUPERCOOLING AND COLD HARDINESS IN GENUS PYRUS.

Author(s) : RAJASHEKAR C., WESTWOOD M. N., BURKE M. J.

Type of article: Article

Summary

DEEP SUPERCOOLING WAS FOUND IN THE STEM TISSUES OF ALL THE PYRUS SPECIES STUDIED. THERE WAS MORE THAN 1 LOW TEMPERATURE EXOTHERM RESULTING FROM THE FREEZING OF SUPERCOOLED WATER IN STEM TISSUE, AND THESE EXOTHERMS WERE ASSOCIATED WITH THE TISSUE INJURY. THE SUPERCOOLED WATER IN THE STEMS OF P. NIVALIS JACQ., P. CORDATA (DESV.) SCHNEIDER AND P. ELAEAGRIFOLIA PALL. WAS FOUND IN BOTH XYLEM AND BARK TISSUES. THE SUPERCOOLING CHARACTERISTICS OF VEGETATIVE AND FLOWER BUDS ARE ALSO DESCRIBED. THE HARDIEST AND LEAST HARDY SPECIES FOUND WERE P. CAUCASICA FED. AND P. PASHIA D. DON., RESPECTIVELY.

Details

  • Original title: DEEP SUPERCOOLING AND COLD HARDINESS IN GENUS PYRUS.
  • Record ID : 1983-1336
  • Languages: English
  • Source: J. am. Soc. hortic. Sci. - vol. 107 - n. 6
  • Publication date: 1982/11
  • Document available for consultation in the library of the IIR headquarters only.

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