Supplementary Data 2 and 3

The dataset retains results meeting the thresholds of Pearson’s correlation coefficient (PPC) > 0.8 and p-value < 0.01. - Supplementary Data 2: Pearson's correlations between genes and annotated metabolites (PPC > 0.8, p < 0.01). - Supplementary Data 3: Pearson's correlations between genes and unknown metabolites (PPC > 0.8, p < 0.01).  Data Fields - Gene ID: Gene identifiers from the barley Morex v3 reference genome. - Peak number: Unique identifier for metabolites. - Compound: Name of the annotated metabolite (applies to Supplementary Data 2 only). - Class: Classification category of the metabolite. - Correlation_coefficient: Pearson’s correlation coefficient between metabolite abundance and gene expression levels. - pvalue: Results of the two-tailed t-test for null hypothesis testing .  The dataset provides a comprehensive resource for exploring gene-metabolite regulatory interactions in barley grain metabolism.