As both plant biomass and total leaf area increased with
time, especially under CO2 enrichment, SLA showed a
decreasing trend (Fig. 3). However, SLA was only influenced
(P C 0.05) by CO2 levels, on week 15, which recorded
lower SLA in plants exposed to 800 and 1,200 lmol/
mol compared to control by 37% (61 vs 98 cm2/g).