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. 2014 Sep 30;9(9):e108568. doi: 10.1371/journal.pone.0108568

Figure 2. Root characteristics of three S. integra varieties exposed to different Pb concentrations for 14 days.

Figure 2

(A) Total root length. (B) Surface area. (C) Root volume. (D) Average diameter. Data points and error bars represent means ± S.D. of three replicates (n = 3). Different letters indicate significant differences (P<0.05) across the treatments according to Fisher's LSD test.