Chin J Plant Ecol ›› 2016, Vol. 40 ›› Issue (2): 177-.DOI: 10.17521/cjpe.2015.0182
• Research Articles • Previous Articles
Zhi-Yu CHEN1,2, Qi LI1,2,3, Xian-Hua ZOU1,2, Xiang-Qing MA1,2, Peng-Fei WU1,2,*()
Online:
2016-02-10
Published:
2016-03-08
Contact:
Peng-Fei WU
Zhi-Yu CHEN, Qi LI, Xian-Hua ZOU, Xiang-Qing MA, Peng-Fei WU. Effect of neighboring competition on photosynthetic characteristics and biomass allocation of Chinese fir seedlings under low phosphorus stress[J]. Chin J Plant Ecol, 2016, 40(2): 177-.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2015.0182
自由度 Degrees of freedom | F值F value | ||||
---|---|---|---|---|---|
胞间CO2浓度 Intercellular CO2 concentration | 净光合速率 Net photosynthetic rate | 蒸腾速率 Transpiration rate | 气孔导度 Stomatal conductance | ||
竞争处理 Competition treatment (a) | 1 | 53.9** | 5.807* | 11.181** | 4.4* |
供磷水平 Phosphorus supply level (b) | 2 | 0.7ns | 16.698** | 15.740** | 20.9** |
胁迫时期 Stress stage (c) | 2 | 10.4** | 0.698ns | 18.314** | 3.3* |
a和b组间交互作用 Effects between a and b | 2 | 29.1** | 6.984** | 5.919** | 0.9ns |
a和c组间交互作用 Effects between a and c | 2 | 6.6** | 9.382** | 3.494* | 8.2** |
b和c组间交互作用 Effects between b and c | 4 | 8.7** | 4.323** | 9.111** | 10.5** |
a,b和c组间交互作用 Effects among a, b and c | 4 | 3.9** | 3.522* | 8.247** | 8.4** |
误差 Error | 90 |
Table 1 Effects of competition treatment, phosphorus supply level and stress stage on the photosynthesis characteristics of Cunninghamia lanceolata seedlings
自由度 Degrees of freedom | F值F value | ||||
---|---|---|---|---|---|
胞间CO2浓度 Intercellular CO2 concentration | 净光合速率 Net photosynthetic rate | 蒸腾速率 Transpiration rate | 气孔导度 Stomatal conductance | ||
竞争处理 Competition treatment (a) | 1 | 53.9** | 5.807* | 11.181** | 4.4* |
供磷水平 Phosphorus supply level (b) | 2 | 0.7ns | 16.698** | 15.740** | 20.9** |
胁迫时期 Stress stage (c) | 2 | 10.4** | 0.698ns | 18.314** | 3.3* |
a和b组间交互作用 Effects between a and b | 2 | 29.1** | 6.984** | 5.919** | 0.9ns |
a和c组间交互作用 Effects between a and c | 2 | 6.6** | 9.382** | 3.494* | 8.2** |
b和c组间交互作用 Effects between b and c | 4 | 8.7** | 4.323** | 9.111** | 10.5** |
a,b和c组间交互作用 Effects among a, b and c | 4 | 3.9** | 3.522* | 8.247** | 8.4** |
误差 Error | 90 |
Fig. 2 Photosynthetic characteristics of Cunninghamia lanceolata seedlings under neighboring competition treatment (mean ± SE). Different small letters indicate significant difference between two competition treatments (p < 0.05).
Fig. 3 Photosynthetic characteristics of Cunninghamia lanceolata seedlings under different phosphorus supply levels (mean ± SE). Different small letters indicate significant difference among three phosphorus supply levels (p < 0.05).
Fig. 4 Photosynthetic characteristics of Cunninghamia lanceolata seedlings at different stress stages (mean ± SE). Different small letters indicate significant difference among three stress stages (p < 0.05).
自由度 Degrees of freedom | F值 F value | |||
---|---|---|---|---|
地上部分 Shoot | 根系 Root | 根冠比 Root to shoot ratio | ||
竞争处理 Competition treatment (a) | 1 | 1.767ns | 0.017ns | 0.659ns |
供磷水平 Phosphorus supply level (b) | 2 | 0.240** | 38.689** | 38.096ns |
胁迫时期 Stress stage (c) | 2 | 1.624ns | 0.710** | 4.927** |
a和b组间交互作用 Effects between a and b | 2 | 1.225ns | 1.411ns | 0.007ns |
a和c组间交互作用 Effects between a and c | 2 | 2.539ns | 0.438ns | 1.343ns |
b和c组间交互作用 Effects between b and c | 4 | 0.412ns | 0.908ns | 1.075ns |
a,b和c组间交互作用 Effects among a, b and c | 4 | 0.813ns | 1.571ns | 0.861ns |
误差 Error | 90 |
Table 2 Effects of competition treatment, phosphorus supply level and stress stage on the biomass allocation of Cunninghamia lanceolata seedlings
自由度 Degrees of freedom | F值 F value | |||
---|---|---|---|---|
地上部分 Shoot | 根系 Root | 根冠比 Root to shoot ratio | ||
竞争处理 Competition treatment (a) | 1 | 1.767ns | 0.017ns | 0.659ns |
供磷水平 Phosphorus supply level (b) | 2 | 0.240** | 38.689** | 38.096ns |
胁迫时期 Stress stage (c) | 2 | 1.624ns | 0.710** | 4.927** |
a和b组间交互作用 Effects between a and b | 2 | 1.225ns | 1.411ns | 0.007ns |
a和c组间交互作用 Effects between a and c | 2 | 2.539ns | 0.438ns | 1.343ns |
b和c组间交互作用 Effects between b and c | 4 | 0.412ns | 0.908ns | 1.075ns |
a,b和c组间交互作用 Effects among a, b and c | 4 | 0.813ns | 1.571ns | 0.861ns |
误差 Error | 90 |
Fig. 5 Biomass allocation of Cunninghamia lanceolata seedlings under neighboring competition treatment (mean ± SE). Different small letters indicate significant difference between two competition treatments (p < 0.05).
Fig. 6 Biomass allocation of Cunninghamia lanceolata seedlings under different phosphorus supply levels (mean ± SE). Different small letters indicate significant difference among three phosphorus supply levels (p < 0.05).
Fig. 7 Biomass allocation of Cunninghamia lanceolata seedlings at different stress stages (mean ± SE). Different small letters indicate significant difference among three stress stages (p < 0.05).
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