Rhizomes Help the Forage Grass Leymus chinensis to Adapt to the Salt and Alkali Stresses
Table 1
The effects of salt stress (S) and alkali stress (A) on biomass and vegetative reproduction of L. chinensis.
Stress category
Concentration
Biomass (means ± SE, mg)
Vegetative reproduction (means ± SE,/plant)
Leaf
Stem
Rhizome
Root
DSR
DST
RN
TDN
Salt stress
C
0.24 ± 0.003a
0.16 ± 0.004a
0.05 ± 0.004a
0.05 ± 0.007a
7.57 ± 0.541a
2.86 ± 0.218a
3.10 ± 0.048a
10.43 ± 0.378a
S100
0.17 ± 0.007b
0.11 ± 0.005b
0.04 ± 0.005b
0.05 ± 0.006a
5.38 ± 0.497b
1.90 ± 0.265b
2.81 ± 0.454a
7.29 ± 0.756b
S200
0.16 ± 0.018b
0.10 ± 0.012b
0.03 ± 0.003c
0.04 ± 0.002b
4.38 ± 0.172b
1.90 ± 0.126b
2.29 ± 0.000b
6.29 ± 0.286b
Alkali stress
C
0.24 ± 0.003a
0.16 ± 0.004a
0.05 ± 0.004a
0.05 ± 0.007a
7.57 ± 0.541a
2.86 ± 0.218a
3.10 ± 0.048a
10.43 ± 0.378a
A100
0.19 ± 0.012b
0.12 ± 0.008b
0.04 ± 0.007b
0.04 ± 0.004b
5.86 ± 1.072a
1.53 ± 0.126b
2.38 ± 0.290b
7.38 ± 1.061b
A200
0.08 ± 0.008c
0.06 ± 0.005c
0.02 ± 0.002c
0.02 ± 0.003c
1.90 ± 0.265c
1.43 ± 0.082b
1.71 ± 0.143c
3.33 ± 0.208c
The means and standard errors are reported. C: without salt or alkali stresses, S100: salt stress with 100 mmol/L concentration, S200: salt stress with 200 mmol/L concentration, A100: alkali stress with 100 mmol/L concentration, and A200: alkali stress with 200 mmol/L concentration. In the same stress category, within each column, the different letters indicate significant difference among treatments (, < 0.05). DSR: daughter shoots from rhizome; DST: daughter shoots from tillers; RN: rhizome number; TDN: total daughter number.