Seed phosphorus content per seed dry mass

Formal name:  seed phosphorus content per seed dry mass
Local identifier:  TOP578
Synonym Term:  seed P content per dry mass
Related Term:  seed P content
Related Term:  seed P concentration
Definition:  The ratio of the quantity (SEP:quantity) of phosphorus (CHEBI:phosphorus atom) in the seed (PO:seed) to the corresponding seed (PO:seed) mass (PATO:mass) assessed after drying
Formal Unit:  mass unit / mass unit or amount unit / mass unit

Comment:  The quantity of phosphorus 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