Abstract
The present study is an attempt to investigate whether triphenyltetrazolium chloride (TTC), a chemical compound which measures dehydrogenase activity, could be used to study fine-root vitality from two different points of view: (i) in relation to ageing; (ii) as an indicator of environmental stress, in this case of excess nitrogen. The study was performed with excavated fine-roots from middle-aged Norway spruce and Scots pine stands.
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