Stem sodium content per stem dry mass

Formal name:  stem sodium content per stem dry mass
Local identifier:  TOP499
Synonym Term:  stem Na content per dry mass
Related Term:  stem Na content
Related Term:  stem Na concentration
Definition:  The ratio of the quantity (SEP:quantity) of sodium (CHEBI:sodium atom) in the stem (PO:stem) to the corresponding stem (PO:stem) mass (PATO:mass) assessed after drying
Formal Unit:  mass unit / mass unit or amount unit / mass unit

Comment:  The quantity of sodium can be expressed either as a mass (with mass unit, e.g. gram) or as an amount (with amount unit, e.g. mol). The term concentration is polysemic and we suggest to not use it in this context.
Reference:  Eric Garnier, Jens Kattge, Stefan Klotz, Ingolf Kühn, Ulrike Stahl


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