Fig. 3
From: Genome-wide expression profiling of leaves and roots of watermelon in response to low nitrogen
Photosynthetic assimilation (a), stomatal conductance (b), Intercellular CO2 (c), transpiration rate (d), vapor pressure deficit of leaf (vpdL) (e), and maximum photosynthetic efficiency (f) of watermelon seedlings grown at different levels of N (0.2 mM, 4.5 mM and 9 mM). Different letters indicate significant differences by Duncan’s multiple range test at P ≤ 0.05. The photosynthetic parameters (A-F) were measured at day 14 after N treatment