Fig. 4
From: Genome-wide expression profiling of leaves and roots of watermelon in response to low nitrogen
Figures related with maximum photosynthetic efficiency (Fv/Fm) of leaves of watermelon seedlings grown under hydroponic conditions at 0.2 mM N (a), 4.5 mM N (b), and 9 mM N (c). Pictures were taken at day 14 after N treatment