Table 2.

Correlations between four photosynthesis-related traits under different P conditions.

LP/NP	Pn	Tr	Co	Ci
Pn	1.000	−0.100*	−0.108*	0.394**
Tr	0.016	1.000	0.886**	−0.167**
Co	0.015	0.924**	1.000	0.023
Ci	0.500**	−0.096	0.073	1.000

Pearson correlation coefficients under NP and LP conditions were listed above and below the diagonal, respectively.

^*and

^**: the 0.05 and 0.01 levels of significance, respectively.