TABLE 3.

Correlations between N/K values or PNS content and Chl a + b, Pn, and TSS content of P. notoginseng seedlings.

Index			Shoot			Root
			Chl a + b	Pn	TSS	TSS
2-year Seedling	Shoot	N/K	−0.845**	−0.586*	−0.762**	−0.739**
	Root	N/K	−0.870**	−0.605*	−0.745**	−0.774**
		PNS	0.666**	0.734**	0.672**	0.771**
3-year Seedling	Shoot	N/K	−0.551**	−0.564*	−0.647**	−0.560*
	Root	N/K	−0.542**	−0.549*	−0.643*	−0.540*
		PNS	0.585*	0.476	0.777**	0.643**

Note: Chl a + b, chlorophyll a + b; Pn, net photosynthesis rate; TSS, total soluble sugar. Correlation coefficients are calculated by Pearson correlation, n = 16. * and ** represent significant correlation at p < 0.05 and p < 0.01, respectively.