Contrastingly, the reduction in SLA was followed by
increasing trends of RGR from week 6 until 15 after start of
treatments (Fig. 4). The RGR of the seedlings was significantly
enhanced under elevated CO2 compared to the
control at weeks 9 and 15. Throughout the experiment,
palms exposed to 15 weeks of elevated treatments displayed
higher RGR than control palms (400 lmol/mol).
However, there was no enhancement of the RGR observed
between palms in 800 and 1,200 lmol/mol enrichment
treatments.