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Leaf dark respiratory CO2‐release (RD) is, according to some literature, dependent on the rate of leaf transpiration. If this is true, then at a given vapor pressure deficit, the leaf stomatal conductance (gs) will be expected to be a controlling factor of measured RD at any given time. We artificially lowered leaf gs by applying abscisic acid (ABA). Although leaf RD generally covaried temporally...
Leaf daytime respiration (leaf respiration in the light, RL) is often assumed to constitute a fixed fraction of leaf dark respiration (RD) (i.e. a fixed light inhibition of respiration (RD)) and vary diurnally due to temperature fluctuations.
These assumptions were tested by measuring RL, RD and the light inhibition of RD in the field at a constant temperature using the Kok method. Measurements...
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