Data from: An energy dispersive X-ray fluorescence method for screening grain calcium, zinc, iron, manganese, and copper in wheat

This dataset contains multi-element concentration measurements for wheat
(Triticum aestivum L.) grain samples collected from diverse genotypes used
to calibrate and validate an energy-dispersive X-ray fluorescence (EDXRF)
method. The dataset includes elemental concentrations for calcium (Ca),
manganese (Mn), iron (Fe), copper (Cu), and zinc (Zn), with values
generated using both EDXRF (non-destructive estimates) and a microwave
plasma–atomic emission spectrometer (MP-AES) as reference measurements.
Data are organized by genotype (sample_id), sample group (calibration or
validation), and analytical method (MP-AES or EDXRF), with corresponding
elemental concentration values (mg kg⁻¹). These data enable a comparative
assessment of elemental methods and studies related to crop
biofortification and nutrient phenotyping. The dataset is particularly
relevant for researchers working on high-throughput screening methods in
plant breeding programs.