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Respiration rates of apple trees, estimated by CO 2 ‐efflux measurements
Author(s) -
BUTLER D. R.,
LANDSBERG J. J.
Publication year - 1981
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1981.tb01037.x
Subject(s) - respiration , horticulture , respiration rate , botany , flux (metallurgy) , bloom , atmospheric sciences , zoology , environmental science , biology , chemistry , ecology , physics , organic chemistry
. Measurements of the efflux of CO 2 from 5–6 year old container grown apple trees, in the dark at a range of temperatures (T), indicated that respiration rate (R) can be described by the equation R = SL e kT . The temperature coefficient k, was the same at all times of the year and for all components of the trees, but the values of a varied. At the same temperature respiration rates were low when the trees were dormant, rose rapidly to a peak in spring (before full bloom) and then declined steadily through the season. When respiration was expressed as a flux density, rates for different components of the tree were usually similar. Differences were sometimes statistically significant but no clear pattern emerged. The results obtained are similar to those published for other plants and the equation can be used in the calculation of the carbon balance of apple trees.