Figure 4.

Distribution of tentatively identified secondary metabolites in strawberry achenes and receptacle at different developmental stages. The colors indicate the proportional content of each putatively identified metabolite among the samples as determined by the average peak response area during UPLC-QTOF-MS. The lowest response area receives light blue, and the highest response area receives light red (see color bar at bottom). The exact values for each metabolite peak area are provided in Supplemental Table S3. The compound names in italics represent single matches in the Dictionary of Natural Products database that were not verified by MS/MS analysis.