Fig. 2
From: Genome-wide expression profiling of leaves and roots of watermelon in response to low nitrogen
Plant growth (fresh weight and dry weight) and relative chlorophyll measurement (SPAD index) of watermelon seedlings grown under different levels of N (0.2 mM, 4.5 mM, 9 mM). Different letters indicate significant differences by Duncan’s multiple range test at P ≤ 0.05. The data for fresh weight (a, b), dry weight (c, d) and SPAD index (e, f) was measured at days 7 and 14 days after N treatment. DAT: days after treatment