Plant chemical composition (mean ± SEM) of Stratiotes aloides after 4 months of different PAR and CO₂ treatments.

Significant differences among PAR treatments are indicated on the right by different capital letters (A, B, C) while significant differences among CO₂ treatments are indicated on the left by different lower case letters (a, b, c). See Table 1 for P and F values. Please note a different unit for C-content (mol kg DW^-1).

Plant chemical composition (mean ± SEM) of Stratiotes aloides after 4 months of different PAR and CO₂ treatments.