Share

ARTIFICIAL CLIMATES AND THE DORMANCY OF BUDS. I. TEMPERATURES AND AUTUMNAL DORMANCY OF FRAXINUS EXCELSIOR L.

CLIMATS ARTIFICIELS ET DORMANCE DES BOURGEONS. 1. TEMPERATURES ET DORMANCE AUTOMNALE CHEZ LE FRENE (FRAXINUS EXCELSIOR L.).

Author(s) : LAVARENNE S., BARNOLA P., CHAMPAGNAT P.

Type of article: Article

Summary

CURRENT YEAR SHOOTS OF FRAXINUS EXCELSIOR L. ARE COLLECTED IN SEPTEMBER. THEY ARE SET IN ROOMS WITH A HIGH RELATIVE HUMIDITY LEVEL AT CONSTANT TEMPERATURES OF 277, 281, 285, 289, 291, 298 K (4, 8, 12, 16, 18 AND 25 C). FROM 277 TO 291 K THE BUDS DO NOT BUD DURING 4 TO 6 MONTHS. AFTER A PERIOD OF 4 TO 18 WEEKS, THE DORMANCY OF THE BUDS IS MEASURED AT 298 K BY THE STANDARD METHOD OF SINGLE NODE CUTTING. AT 277, 281 AND 285 K A 4 WEEK TREATMENT INDUCED A STRONG DORMANCY, DEEPER THAN THAT WHICH IS OBSERVED IN NATURAL CONDITIONS. THEREAFTER THIS DORMANCY DISAPPEARED RAPIDLY AND ENTIRELY AT 277 K, SLOWLY AND PARTLY AT 281 K AND 285 K. AT 291 K THE INITIAL DORMANCY SLIGHTLY INCREASED, THEN REMAINS CONSTANT AT LEAST DURING 6 MONTHS.

Details

  • Original title: CLIMATS ARTIFICIELS ET DORMANCE DES BOURGEONS. 1. TEMPERATURES ET DORMANCE AUTOMNALE CHEZ LE FRENE (FRAXINUS EXCELSIOR L.).
  • Record ID : 1981-0080
  • Languages: French
  • Source: C. R. Acad. Agric. Fr. - vol. 66 - n. 1
  • Publication date: 1980/01
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing