acronym method_of entity 3 seeds per tube and occasionally four for verry small seeds from multiple replicate plants per accession were left to soak in nitric acid over night and then digested in block heaters prior to analysis by inductively coupled plasma-mass spectrometry (ICP-MS). This data was then weight normalised so that data from each element was in the units mg/kg Seed mineral analysis - Measurement scale_of variable_of attribute