Articles
CHILL EFFECTS ON POPLAR METABOLISM
Article number
630_19
Pages
159 – 166
Language
English
Abstract
Effects of low nonfreezing temperature were analysed on a poplar clone (P. tremula L. x P. tremuloides Michaux cv.
Muhs 1). Poplar plants were cultured in vitro, then acclimatized in greenhouse.
After 3 months, during their active growth, they were exposed to chilling stress (4°C) for 14 days.
Growth, photosynthetic activity and levels of sucrose, fructose and glucose were determined.
Freezing tolerance was also evaluated during the treatment on days 0, 4, 7 and 14.
During the cold treatment, plant growth was greatly affected.
Simultaneously, photosynthetic activity showed a significant decrease in the stressed plants.
The contents of sucrose, fructose and glucose increased during cold exposure.
These accumulations could be positively related with an increase in freezing tolerance.
Muhs 1). Poplar plants were cultured in vitro, then acclimatized in greenhouse.
After 3 months, during their active growth, they were exposed to chilling stress (4°C) for 14 days.
Growth, photosynthetic activity and levels of sucrose, fructose and glucose were determined.
Freezing tolerance was also evaluated during the treatment on days 0, 4, 7 and 14.
During the cold treatment, plant growth was greatly affected.
Simultaneously, photosynthetic activity showed a significant decrease in the stressed plants.
The contents of sucrose, fructose and glucose increased during cold exposure.
These accumulations could be positively related with an increase in freezing tolerance.
Publication
Authors
J. Renaut, S. Lutts, J.F. Hausman
Keywords
Cold acclimation, soluble sugars, photosynthetic activity, Populus, poplar hybrid
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