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EFFECTS OF TEMPERATURE ON THE DEEP SUPERCOOLING CHARACTERISTICS OF DORMANT AND DEACCLIMATING SWEET CHERRY FLOWER BUDS.

Author(s) : ANDREWS P. K., PROEBSTING E. L. Jr

Type of article: Article

Summary

SEASONAL CHANGES IN THE TEMPERATURE OF THE MEDIAN LOW-TEMPERATURE EXOTHERM (LTE50 ) OF DORMANT SWEET CHERRY FLOWER BUDS WERE SIGNIFICANTLY CORRELATED WITH THE PRECEDING MINIMUM AIR TEMPERATURE IN THE ORCHARD AND THE WATER CONTENT OF THE FLOWER PRIMORDIA. WHEN BUDS WERE EXPOSED TO TEMPERATURES JUST BELOW THE HIGH TEMPERATURE EXOTHERMS, WATER MIGRATED FROM THE PRIMORDIA TO THE BUD SCALES. UNDER THESE CONDITI LTE50 DECREASED ALMOST 5 K DURING THE FIRST DAY, BUT ONLY 1 K THE DAY THEREAFTER. THESE CHANGES WERE ACCOMPANIED BY FLUCTUATIONS IN THE CAPACITY OF THE FLOWER BUDS TO EXHIBIT DEEP SUPERCOOLING, EXPRESSED AS THE FRACTION OF AN LTE PRODUCED PER FLOWER PRIMORDIUM.

Details

  • Original title: EFFECTS OF TEMPERATURE ON THE DEEP SUPERCOOLING CHARACTERISTICS OF DORMANT AND DEACCLIMATING SWEET CHERRY FLOWER BUDS.
  • Record ID : 1988-0613
  • Languages: English
  • Source: J. am. Soc. hortic. Sci. - vol. 112 - n. 2
  • Publication date: 1987/03
  • Document available for consultation in the library of the IIR headquarters only.

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