Figure 7 | Scientific Reports

Figure 7

From: Effects of soil nitrogen (N) deficiency on photosynthetic N-use efficiency in N-fixing and non-N-fixing tree seedlings in subtropical China

Figure 7

Regression analysis of gm (mesophyll conductance) with the PNUE (photosynthetic nitrogen [N] use efficiency) in the seedling leaves of four tree species following exposure to different soil N treatments. The determination coefficients (R2) and P-values are shown. The lines fitted for the N-fixing and non-N-fixing trees are significantly different (P < 0.05) according to the results of a one-way analysis of covariance (ANCOVA) with the PNUE as a dependent variable, whether it could fix nitrogen as a fixed factor, and gm as a covariate.

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