Chin J Plant Ecol ›› 2009, Vol. 33 ›› Issue (1): 141-149.DOI: 10.3773/j.issn.1005-264x.2009.01.016
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LIU Bin-Yang1, LIU Wei-Qiu1,*(), LEI Chun-Yi2, ZHANG Yi-Shun1
Received:
2007-11-01
Accepted:
2007-12-10
Online:
2009-11-01
Published:
2009-01-30
Contact:
LIU Wei-Qiu
About author:
*E-mail: lsslwq@mail.sysu.edu.cnLIU Bin-Yang, LIU Wei-Qiu, LEI Chun-Yi, ZHANG Yi-Shun. PHYSIOLOGICAL RESPONSES OF THREE BRYOPHYTE SPECIES OF SOUTH CHINA TO SIMULATED NITROGEN DEPOSITION[J]. Chin J Plant Ecol, 2009, 33(1): 141-149.
氮处理浓度 N treatments (kg N·hm-2) | 光合速率 Pn (nmol·s-1·g-1 FW) | 淀粉 Starch (mg·g-1 FW) | 可溶性糖 Soluble sugar (mg·g-1 FW) | 总氮 Total N (mg·g-1 DW) | 可溶性蛋白 Soluble protein (mg·g-1 FW) |
---|---|---|---|---|---|
大灰藓 Hypnum plumaeforme | |||||
0 | 21.87±0.84a | 19.23±2.28a | 9.93±0.68a | 9.09±2.15a | 2.71±0.14a |
20 | 27.68±2.59b | 23.96±1.45b | 12.07±0.99b | 17.89±1.14b | 3.53±0.02b |
40 | 41.44±2.10c | 28.28±1.22c | 13.8±0.09c | 20.45±0.79c | 3.84±0.07c |
60 | 45.61±2.96d | 32.38±0.85d | 15.09±0.51d | 24.22±0.53d | 3.89±0.13c |
刺边小金发藓拟刺亚种 Pogonatum cirratum subsp. fuscatum | |||||
0 | 37.71±1.96a | 36.72±1.68a | 19.13±1.11a | 8.97±1.13a | 2.69±0.08a |
20 | 41.36±1.94b | 44.42±2.03b | 15.41±1.02b | 10.82±0.49b | 2.88±0.06b |
40 | 43.32±1.61c | 52.32±2.25c | 12.83±1.1c | 15.5±1.37c | 3.08±0.15c |
60 | 37.03±1.44a | 39.78±0.97a | 15.35±0.28b | 13.13±0.44d | 3.08±0.08c |
石地钱 Reboulia hemisphaerica | |||||
0 | 20.79±1.18a | 19.28±1.14a | 5.56±0.77 | 15.43±2.91a | 3.09±0.19 |
20 | 15.88±1.51b | 16.65±0.55b | 4.78±0.78 | 27.78±1.15b | 3.16±0.15 |
40 | 15.81±2.29b | 14.55±1.05c | 5.16±0.35 | 29.4±1.51b | 3.19±0.11 |
60 | 22.11±0.54a | 18.48±0.11a | 6.37±0.66 | 22.84±2.13c | 3.3±0.19 |
Table 1 Concentrations of starch, soluble sugar, total nitrogen and soluble protein in bryophytes grown under variable N treatments (mean±SD, n=3)
氮处理浓度 N treatments (kg N·hm-2) | 光合速率 Pn (nmol·s-1·g-1 FW) | 淀粉 Starch (mg·g-1 FW) | 可溶性糖 Soluble sugar (mg·g-1 FW) | 总氮 Total N (mg·g-1 DW) | 可溶性蛋白 Soluble protein (mg·g-1 FW) |
---|---|---|---|---|---|
大灰藓 Hypnum plumaeforme | |||||
0 | 21.87±0.84a | 19.23±2.28a | 9.93±0.68a | 9.09±2.15a | 2.71±0.14a |
20 | 27.68±2.59b | 23.96±1.45b | 12.07±0.99b | 17.89±1.14b | 3.53±0.02b |
40 | 41.44±2.10c | 28.28±1.22c | 13.8±0.09c | 20.45±0.79c | 3.84±0.07c |
60 | 45.61±2.96d | 32.38±0.85d | 15.09±0.51d | 24.22±0.53d | 3.89±0.13c |
刺边小金发藓拟刺亚种 Pogonatum cirratum subsp. fuscatum | |||||
0 | 37.71±1.96a | 36.72±1.68a | 19.13±1.11a | 8.97±1.13a | 2.69±0.08a |
20 | 41.36±1.94b | 44.42±2.03b | 15.41±1.02b | 10.82±0.49b | 2.88±0.06b |
40 | 43.32±1.61c | 52.32±2.25c | 12.83±1.1c | 15.5±1.37c | 3.08±0.15c |
60 | 37.03±1.44a | 39.78±0.97a | 15.35±0.28b | 13.13±0.44d | 3.08±0.08c |
石地钱 Reboulia hemisphaerica | |||||
0 | 20.79±1.18a | 19.28±1.14a | 5.56±0.77 | 15.43±2.91a | 3.09±0.19 |
20 | 15.88±1.51b | 16.65±0.55b | 4.78±0.78 | 27.78±1.15b | 3.16±0.15 |
40 | 15.81±2.29b | 14.55±1.05c | 5.16±0.35 | 29.4±1.51b | 3.19±0.11 |
60 | 22.11±0.54a | 18.48±0.11a | 6.37±0.66 | 22.84±2.13c | 3.3±0.19 |
Fig. 2 Effects of nitrogen treatments on total potassium concentration and percentage potassium leakage in Hypnum plumaeforme (open columns), Pogonatum cirratum subsp. fuscatum (black columns) and Reboulia hemisphaerica (hatched columns) Data represents mean±SD (n=3)
加氮浓度 N treatments (kg N·hm-2) | 硝酸还原酶活性 NRA (μg N·g-1 FW·h-1) | |
---|---|---|
绝对活性 Constitutive activity | 可诱导活性 Inducible activity | |
大灰藓 Hypnum plumaeforme | ||
0 | 4.42±0.50a | 14.88±1.79a |
20 | 1.08±0.13b | 1.74±0.09b |
40 | 0.83±0.06b | 0.00±0.00bc |
60 | 0.86±0.07b | -0.43±0.15c |
刺边小金发藓拟刺亚种 Pogonatum cirratum subsp. fuscatum | ||
0 | 3.09±0.78a | 2.20±0.49a |
20 | 1.45±0.08b | 0.13±0.09b |
40 | 0.69±0.06c | -0.28±0.14bc |
60 | 0.63±0.04c | -0.59±0.05c |
石地钱 Reboulia hemisphaerica | ||
0 | 0.64±0.10 | 0.47±0.14a |
20 | 0.51±0.08 | 0.11±0.03b |
40 | 0.44±0.19 | -0.02±0.04b |
60 | 0.57±0.10 | -0.2±0.23c |
Table 2 Effects of nitrogen treatments on constitutive and inducible nitrate reductase activity (NRA) of bryophytes (means±SD, n=3)
加氮浓度 N treatments (kg N·hm-2) | 硝酸还原酶活性 NRA (μg N·g-1 FW·h-1) | |
---|---|---|
绝对活性 Constitutive activity | 可诱导活性 Inducible activity | |
大灰藓 Hypnum plumaeforme | ||
0 | 4.42±0.50a | 14.88±1.79a |
20 | 1.08±0.13b | 1.74±0.09b |
40 | 0.83±0.06b | 0.00±0.00bc |
60 | 0.86±0.07b | -0.43±0.15c |
刺边小金发藓拟刺亚种 Pogonatum cirratum subsp. fuscatum | ||
0 | 3.09±0.78a | 2.20±0.49a |
20 | 1.45±0.08b | 0.13±0.09b |
40 | 0.69±0.06c | -0.28±0.14bc |
60 | 0.63±0.04c | -0.59±0.05c |
石地钱 Reboulia hemisphaerica | ||
0 | 0.64±0.10 | 0.47±0.14a |
20 | 0.51±0.08 | 0.11±0.03b |
40 | 0.44±0.19 | -0.02±0.04b |
60 | 0.57±0.10 | -0.2±0.23c |
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