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. 2020 Jan 24;10:1748. doi: 10.3389/fpls.2019.01748

Figure 7.

Figure 7

Stem elongation and thickening rates of 3-month-old WT, PdC3H17OE (17OE), and PdC3H17ΔCOE (17ΔCOE) poplars after well-watered or drought stress conditions for 20 days. (A) Stem elongation rate. (B) Stem thickening rate. At least six plants of two lines in each genotype were measured. Data are presented as mean ± Different letters above bars denote statistical significance between treatments of samples (P < 0.05).