Table 3. Statistic results of all samples’ TNCs-DC.

Samples	Positions	N.[1]	Mean (%) ± S. D.[2]
Leaf	Upper	40	4.053±0.498a
	Middle	40	3.129±0.321b
	Lower	40	2.703±0.325c
Stem	Upper	40	1.390±0.366a
	Middle	40	0.849±0.175b
	Lower	40	0.736±0.102c
Leaf	All	120	3.295±0.686a
Stem	All	120	0.992±0.374c
Root	All	40	1.186±0.143b
Leaf-root-stem	All	280	2.007±1.231

Note: Different letters (a, b, c) in the same column indicate statistical significance at the 5% level by Tamhane’s T2 test.

^[1]N.: Number of samples;

^[2]S. D.: Standard deviation of the group.

One-way analysis of variance (ANOVA) was used to generate these results, which were obtained using IBM SPSS Statistics (Version 20.0, IBM Corporation, Armonk, New York, USA). The results of TNCs-DC exhibited significant differences between groups (leaf, stem, and root) and within groups (leaves/stems in different positions).