Acta Prataculturae Sinica ›› 2021, Vol. 30 ›› Issue (10): 53-62.DOI: 10.11686/cyxb2020351
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Ru-yue WANG(), Shi-li YUAN, Wu-wu WEN, Peng ZHOU, Yuan AN()
Received:
2020-07-21
Revised:
2020-09-07
Online:
2021-09-16
Published:
2021-09-16
Contact:
Yuan AN
Ru-yue WANG, Shi-li YUAN, Wu-wu WEN, Peng ZHOU, Yuan AN. Effects of phosphorus on root growth and photosynthetic physiology of alfalfa seedlings under aluminum stress[J]. Acta Prataculturae Sinica, 2021, 30(10): 53-62.
指标 Index | 处理 Treatments | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
叶绿素a Chlorophyll a | CK | 1.19±0.13a | 1.22±0.06a | 1.27±0.09a |
P | 1.23±0.08a | 1.20±0.08a | 1.30±0.14a | |
Al | 1.05±0.13a | 1.04±0.04b | 1.04±0.05b | |
Al+P | 1.11±0.03a | 1.16±0.10ab | 1.22±0.05a | |
叶绿素b Chlorophyll b | CK | 0.38±0.04a | 0.41±0.02a | 0.42±0.04a |
P | 0.39±0.05a | 0.40±0.03a | 0.44±0.04a | |
Al | 0.36±0.02a | 0.34±0.03ab | 0.34±0.01ab | |
Al+P | 0.39±0.03a | 0.38±0.02a | 0.40±0.03a |
Table 1 Effect of phosphorus on chlorophyll content of alfalfa under aluminum stress (μg·g-1 FW)
指标 Index | 处理 Treatments | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
叶绿素a Chlorophyll a | CK | 1.19±0.13a | 1.22±0.06a | 1.27±0.09a |
P | 1.23±0.08a | 1.20±0.08a | 1.30±0.14a | |
Al | 1.05±0.13a | 1.04±0.04b | 1.04±0.05b | |
Al+P | 1.11±0.03a | 1.16±0.10ab | 1.22±0.05a | |
叶绿素b Chlorophyll b | CK | 0.38±0.04a | 0.41±0.02a | 0.42±0.04a |
P | 0.39±0.05a | 0.40±0.03a | 0.44±0.04a | |
Al | 0.36±0.02a | 0.34±0.03ab | 0.34±0.01ab | |
Al+P | 0.39±0.03a | 0.38±0.02a | 0.40±0.03a |
光合参数 Photosynthetic parameter | 处理 Treatment | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
蒸腾速率 Transpiration rate (mmol·m-2·s-1) | CK | 2.79±0.20a | 2.65±0.22a | 2.63±0.09a |
P | 2.55±0.53b | 2.70±0.05a | 2.66±0.07a | |
Al | 2.10±0.02c | 2.25±0.10c | 2.10±0.18c | |
Al+P | 2.39±0.02b | 2.54±0.15b | 2.37±0.14b | |
气孔导度 Stomatal conductance (mmol·m-2·s-1) | CK | 63.17±4.49a | 63.54±5.27a | 55.23±2.00a |
P | 58.01±12.20ab | 64.61±1.24a | 55.92±1.41a | |
Al | 47.68±1.38c | 53.84±2.57c | 43.30±3.67c | |
Al+P | 52.20±0.39b | 59.01±3.48b | 48.75±2.81b | |
光合速率 Photosynthetic rate (mmol·m-2·s-1) | CK | 12.77±0.83ab | 14.70±0.54a | 14.11±0.74a |
P | 12.26±0.44b | 14.73±0.14a | 14.56±0.52a | |
Al | 8.52±0.61c | 8.87±0.21c | 8.82±0.63b | |
Al+P | 9.58±0.46c | 10.74±0.94b | 9.46±0.54b | |
胞间CO2浓度 Intercellular CO2 concentration (ppm) | CK | 314.80±16.63bc | 276.27±14.80c | 278.36±11.25c |
P | 306.03±13.64c | 284.27±11.96c | 295.51±9.61c | |
Al | 350.82±9.59a | 340.97±16.08a | 350.28±10.19a | |
Al+P | 318.40±13.89bc | 314.03±15.81b | 316.91±17.23b |
Table 2 Effects of phosphorus on photosynthetic parameters of alfalfa under aluminum stress
光合参数 Photosynthetic parameter | 处理 Treatment | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
蒸腾速率 Transpiration rate (mmol·m-2·s-1) | CK | 2.79±0.20a | 2.65±0.22a | 2.63±0.09a |
P | 2.55±0.53b | 2.70±0.05a | 2.66±0.07a | |
Al | 2.10±0.02c | 2.25±0.10c | 2.10±0.18c | |
Al+P | 2.39±0.02b | 2.54±0.15b | 2.37±0.14b | |
气孔导度 Stomatal conductance (mmol·m-2·s-1) | CK | 63.17±4.49a | 63.54±5.27a | 55.23±2.00a |
P | 58.01±12.20ab | 64.61±1.24a | 55.92±1.41a | |
Al | 47.68±1.38c | 53.84±2.57c | 43.30±3.67c | |
Al+P | 52.20±0.39b | 59.01±3.48b | 48.75±2.81b | |
光合速率 Photosynthetic rate (mmol·m-2·s-1) | CK | 12.77±0.83ab | 14.70±0.54a | 14.11±0.74a |
P | 12.26±0.44b | 14.73±0.14a | 14.56±0.52a | |
Al | 8.52±0.61c | 8.87±0.21c | 8.82±0.63b | |
Al+P | 9.58±0.46c | 10.74±0.94b | 9.46±0.54b | |
胞间CO2浓度 Intercellular CO2 concentration (ppm) | CK | 314.80±16.63bc | 276.27±14.80c | 278.36±11.25c |
P | 306.03±13.64c | 284.27±11.96c | 295.51±9.61c | |
Al | 350.82±9.59a | 340.97±16.08a | 350.28±10.19a | |
Al+P | 318.40±13.89bc | 314.03±15.81b | 316.91±17.23b |
参数 Parameter | PSII | PSI | ||||||
---|---|---|---|---|---|---|---|---|
CK | P | Al | Al+P | CK | P | Al | Al+P | |
快速光曲线斜率α | 0.13 | 0.15 | 0.11 | 0.09 | 0.39 | 0.39 | 0.45 | 0.42 |
潜在最大相对电子传递效率rETRmax | 15.29 | 18.20 | 7.94 | 11.12 | 101.53 | 92.72 | 71.05 | 80.05 |
半饱和光强Ik | 125.35 | 79.54 | 124.80 | 142.44 | 257.96 | 239.00 | 158.17 | 191.39 |
Table 3 Fitting parameter of fast light curve of photosystem Ⅱ and I in Al-stressed alfalfa
参数 Parameter | PSII | PSI | ||||||
---|---|---|---|---|---|---|---|---|
CK | P | Al | Al+P | CK | P | Al | Al+P | |
快速光曲线斜率α | 0.13 | 0.15 | 0.11 | 0.09 | 0.39 | 0.39 | 0.45 | 0.42 |
潜在最大相对电子传递效率rETRmax | 15.29 | 18.20 | 7.94 | 11.12 | 101.53 | 92.72 | 71.05 | 80.05 |
半饱和光强Ik | 125.35 | 79.54 | 124.80 | 142.44 | 257.96 | 239.00 | 158.17 | 191.39 |
有机酸 Organic acid | 处理 Treatments | 处理时间 Treatment time | |||
---|---|---|---|---|---|
3 h | 6 h | 12 h | 24 h | ||
草酸 Oxalic acid | CK | 0.057±0.008b | 0.062±0.007c | 0.059±0.003c | 0.061±0.000c |
P | 0.051±0.005b | 0.056±0.001c | 0.066±0.006c | 0.067±0.003c | |
Al | 0.088±0.007a | 0.239±0.007a | 0.342±0.005a | 0.457±0.006a | |
Al+P | 0.064±0.007b | 0.174±0.001b | 0.272±0.007b | 0.328±0.004b | |
柠檬酸 Citric acid | CK | 0.031±0.004c | 0.041±0.010c | 0.045±0.008c | 0.044±0.010c |
P | 0.033±0.009c | 0.038±0.010c | 0.038±0.010c | 0.045±0.008c | |
Al | 0.075±0.007a | 0.137±0.009a | 0.232±0.004a | 0.286±0.010a | |
Al+P | 0.063±0.001b | 0.119±0.010b | 0.210±0.008b | 0.250±0.009b |
Table 4 Effect of P on organic acid secretion of alfalfa under aluminum stress (mg·mL-1)
有机酸 Organic acid | 处理 Treatments | 处理时间 Treatment time | |||
---|---|---|---|---|---|
3 h | 6 h | 12 h | 24 h | ||
草酸 Oxalic acid | CK | 0.057±0.008b | 0.062±0.007c | 0.059±0.003c | 0.061±0.000c |
P | 0.051±0.005b | 0.056±0.001c | 0.066±0.006c | 0.067±0.003c | |
Al | 0.088±0.007a | 0.239±0.007a | 0.342±0.005a | 0.457±0.006a | |
Al+P | 0.064±0.007b | 0.174±0.001b | 0.272±0.007b | 0.328±0.004b | |
柠檬酸 Citric acid | CK | 0.031±0.004c | 0.041±0.010c | 0.045±0.008c | 0.044±0.010c |
P | 0.033±0.009c | 0.038±0.010c | 0.038±0.010c | 0.045±0.008c | |
Al | 0.075±0.007a | 0.137±0.009a | 0.232±0.004a | 0.286±0.010a | |
Al+P | 0.063±0.001b | 0.119±0.010b | 0.210±0.008b | 0.250±0.009b |
有机酸 Organic acid | 处理 Treatments | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
草酸 Oxalic acid | CK | 4.260±0.070a | 4.360±0.090a | 4.310±0.250a |
P | 3.810±0.120b | 4.090±0.070b | 4.250±0.160a | |
Al | 2.700±0.230d | 2.470±0.420d | 2.640±0.310c | |
Al+P | 3.230±0.150c | 2.650±0.320c | 3.240±0.160b | |
苹果酸 Malic acid | CK | 0.764±0.030a | 0.610±0.045a | 0.528±0.076ab |
P | 0.467±0.023c | 0.532±0.030a | 0.555±0.050a | |
Al | 0.419±0.039c | 0.390±0.121b | 0.100±0.067c | |
Al+P | 0.598±0.027b | 0.410±0.104ab | 0.384±0.115b | |
柠檬酸 Citric acid | CK | 0.419±0.035a | 0.493±0.107a | 0.421±0.176a |
P | 0.363±0.006ab | 0.470±0.008a | 0.411±0.109a | |
Al | 0.331±0.016b | 0.344±0.021b | 0.246±0.011a | |
Al+P | 0.319±0.044b | 0.426±0.031ab | 0.246±0.012a | |
琥珀酸 Succinic acid | CK | 0.261±0.015a | 0.281±0.013a | 0.276±0.011a |
P | 0.221±0.010b | 0.251±0.010b | 0.249±0.010a | |
Al | 0.216±0.011bc | 0.221±0.005c | 0.230±0.009a | |
Al+P | 0.189±0.019c | 0.261±0.004b | 0.228±0.053a |
Table 5 Effect of P on organic acid content in alfalfa under aluminum stress (mg·mL-1)
有机酸 Organic acid | 处理 Treatments | 处理天数 Days after treatment | ||
---|---|---|---|---|
3 d | 7 d | 10 d | ||
草酸 Oxalic acid | CK | 4.260±0.070a | 4.360±0.090a | 4.310±0.250a |
P | 3.810±0.120b | 4.090±0.070b | 4.250±0.160a | |
Al | 2.700±0.230d | 2.470±0.420d | 2.640±0.310c | |
Al+P | 3.230±0.150c | 2.650±0.320c | 3.240±0.160b | |
苹果酸 Malic acid | CK | 0.764±0.030a | 0.610±0.045a | 0.528±0.076ab |
P | 0.467±0.023c | 0.532±0.030a | 0.555±0.050a | |
Al | 0.419±0.039c | 0.390±0.121b | 0.100±0.067c | |
Al+P | 0.598±0.027b | 0.410±0.104ab | 0.384±0.115b | |
柠檬酸 Citric acid | CK | 0.419±0.035a | 0.493±0.107a | 0.421±0.176a |
P | 0.363±0.006ab | 0.470±0.008a | 0.411±0.109a | |
Al | 0.331±0.016b | 0.344±0.021b | 0.246±0.011a | |
Al+P | 0.319±0.044b | 0.426±0.031ab | 0.246±0.012a | |
琥珀酸 Succinic acid | CK | 0.261±0.015a | 0.281±0.013a | 0.276±0.011a |
P | 0.221±0.010b | 0.251±0.010b | 0.249±0.010a | |
Al | 0.216±0.011bc | 0.221±0.005c | 0.230±0.009a | |
Al+P | 0.189±0.019c | 0.261±0.004b | 0.228±0.053a |
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