Figure 3.

Change of OsSUT1 and OsSUT2 (OsSUTs) expression level of flag leaves under elevated CO₂ for three rice cultivars in each sink:source treatment. ‘Enhanced’ indicates the increased sink:source ratio through leaves removal, and the unaltered sink:source ratio is represented by ‘Control’. Bars represent the average (E‐A)/A (relative change at elevated CO₂ to those at ambient CO₂) of three replicates for OsSUTs expression level with relative standard errors. Symbols indicate the significant difference for the gene expression as a function of CO₂ treatment. ns, not significant. P > 0.1; †P ≤ 0.1; *P ≤ 0.05; **P ≤ 0.001.