Figure 7.

Heat maps showing the log₂ fold changes in metabolite pool sizes in panicles under HNT compared to control conditions for the WS (A) and DS (B). Only metabolites with a significant change in at least three out of the eight cultivars are displayed. The level of significance is indicated by asterisks (* p < 0.05; ** p < 0.01; *** p < 0.001), and the log₂ fold change is represented by the indicated color code. Blue indicates a lower metabolite level under HNT compared to control conditions, and red, a higher level. Cultivars were sorted alphabetically within the respective O. sativa subspecies indica (1–4) and japonica (5–8).