In vitro growth and carbon utilization of the green-leaved orchid Dendrobium officinale are promoted by mycorrhizal associations

Botanical Studies

Table 1 Effects of S1 and S3 on the growth of Dendrobium officinale seedlings (n = 25 each)

Parameters	S1	S3	Control
Increment in fresh weight (g)	0.96 ± 0.06b	1.27 ± 0.05c	0.57 ± 0.02a
Dry weight (g)	0.06 ± 0.00b	0.09 ± 0.00c	0.03 ± 0.00a
Plant height (cm)	2.16 ± 0.04b	2.12 ± 0.06b	1.81 ± 0.07a
Stem length (cm)	1.01 ± 0.02b	1.14 ± 0.04c	0.89 ± 0.03a
Stem diameter (cm)	0.18 ± 0.01b	0.28 ± 0.01c	0.15 ± 0.01a
Number of nodes	3.09 ± 0.06b	3.22 ± 0.11b	2.72 ± 0.01a
Internode length (cm)	0.31 ± 0.01b	0.33 ± 0.01b	0.25 ± 0.01a
Number of tillers	26.24 ± 0.99c	19.40 ± 0.75b	7.24 ± 0.60a
Number of new roots	21.80 ± 1.45c	15.00 ± 1.00b	9.68 ± 0.68a

Different letters within the same row indicate that values (mean ± standard error) are significantly different among treatments at P < 0.05, based on LSD test. Control, non-inoculated seedlings.