Chin J Plant Ecol ›› 2018, Vol. 42 ›› Issue (2): 229-239.DOI: 10.17521/cjpe.2017.0218
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ZHANG Na1,2,3,ZHU Yang-Chun1,LI Zhi-Qiang5,LU Xin1,FAN Ru-Qin1,LIU Li-Zhu1,TONG Fei1,CHEN Jing3,MU Chun-Sheng4,*(),ZHANG Zhen-Hua1,*(
)
Online:
2018-02-20
Published:
2018-04-16
Contact:
Chun-Sheng MU,Zhen-Hua ZHANG
Supported by:
ZHANG Na, ZHU Yang-Chun, LI Zhi-Qiang, LU Xin, FAN Ru-Qin, LIU Li-ZhuTONG , Fei, CHEN Jing, MU Chun-Sheng, ZHANG Zhen-Hua. Effect of Pb pollution on the growth, biomass allocation and photosynthesis of Phragmites australis in flood and drought environment[J]. Chin J Plant Ecol, 2018, 42(2): 229-239.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2017.0218
重复测量分析 Repeated measure (p) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | 时间 Time | 时间 × 铅 Time × Pb | 时间 × 水 Time × Water | 时间 × 铅 × 水 Time × Pb × Water | ||||||
母株生长 Growth of parent shoot | ||||||||||||
茎长 Stem length | < 0.001 | < 0.001 | < 0.01 | < 0.001 | < 0.01 | < 0.001 | < 0.001 | |||||
叶片死亡数 No. of dead leaves | 0.366 | < 0.001 | < 0.05 | < 0.001 | < 0.001 | < 0.001 | < 0.05 | |||||
子株生长 Growth of offspring shoot | ||||||||||||
茎长 Stem length | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |||||
叶片死亡数 No. of dead leaves | 0.168 | < 0.001 | 0.913 | < 0.001 | < 0.05 | < 0.001 | 0.742 | |||||
生长指标 Growth parameters | 双因素方差分析 Two-way AVONA | |||||||||||
铅 Pb | 水 Water | 铅×水 Pb × water | ||||||||||
F | p | F | p | F | p | |||||||
母株叶片死亡率 Leaf mortality in parent shoots | 2.496 | 0.054 | 2.461 | 0.127 | 0.932 | 0.459 | ||||||
子株叶片死亡率 Leaf mortality in offspring shoots | 7.086 | < 0.001 | 2.185 | 0.150 | 4.353 | < 0.01 |
Table 1 Results of Repeated-measures and two-way ANOVA of the effect of Pb and water stress on growth of mother and daughter shoots of Phragmites australis
重复测量分析 Repeated measure (p) | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | 时间 Time | 时间 × 铅 Time × Pb | 时间 × 水 Time × Water | 时间 × 铅 × 水 Time × Pb × Water | ||||||
母株生长 Growth of parent shoot | ||||||||||||
茎长 Stem length | < 0.001 | < 0.001 | < 0.01 | < 0.001 | < 0.01 | < 0.001 | < 0.001 | |||||
叶片死亡数 No. of dead leaves | 0.366 | < 0.001 | < 0.05 | < 0.001 | < 0.001 | < 0.001 | < 0.05 | |||||
子株生长 Growth of offspring shoot | ||||||||||||
茎长 Stem length | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | < 0.001 | |||||
叶片死亡数 No. of dead leaves | 0.168 | < 0.001 | 0.913 | < 0.001 | < 0.05 | < 0.001 | 0.742 | |||||
生长指标 Growth parameters | 双因素方差分析 Two-way AVONA | |||||||||||
铅 Pb | 水 Water | 铅×水 Pb × water | ||||||||||
F | p | F | p | F | p | |||||||
母株叶片死亡率 Leaf mortality in parent shoots | 2.496 | 0.054 | 2.461 | 0.127 | 0.932 | 0.459 | ||||||
子株叶片死亡率 Leaf mortality in offspring shoots | 7.086 | < 0.001 | 2.185 | 0.150 | 4.353 | < 0.01 |
水分 Water level | 处理时间 Treatment time (d) | 指标 Parameter | 铅处理浓度 Pb concentration of treatments (mg·kg-1) | ||||
---|---|---|---|---|---|---|---|
对照 Control | 500 | 1 500 | 3 000 | 4 500 | |||
淹水 Flood | 30 | PSL (cm) | 18.13 ± 0.81a | 16.64 ± 0.75ab | 15.54 ± 0.40b | 13.10 ± 0.52c | 13.24 ± 0.29c |
PDLN (No.) | 1.28 ± 0.05b | 1.54 ± 0.12ab | 1.73 ± 0.11a | 1.90 ± 0.06a | 1.84 ± 0.13a | ||
PGR (cm·d-1) | 0.44 ± 0.03a | 0.39 ± 0.02ab | 0.35 ± 0.01b | 0.27 ± 0.02c | 0.28 ± 0.01c | ||
60 | PSL (cm) | 23.86 ± 0.83a | 22.34 ± 1.52ab | 22.71 ± 0.72ab | 19.22 ± 1.04b | 18.17 ± 0.54b | |
PDLN (No.) | 3.57 ± 0.15b | 3.65 ± 0.22b | 4.38 ± 0.14a | 4.50 ± 0.24a | 4.56 ± 0.08a | ||
PGR (cm·d-1) | 0.19 ± 0.02a | 0.19 ± 0.03a | 0.24 ± 0.01a | 0.21 ± 0.04a | 0.16 ± 0.02a | ||
90 | PSL (cm) | 26.00 ± 0.96a | 24.03 ± 1.84a | 24.21 ± 0.97a | 22.80 ± 0.57a | 21.68 ± 1.20a | |
PDLN (No.) | 7.02 ± 0.06a | 6.59 ± 0.43a | 6.61 ± 0.22a | 6.80 ± 0.16a | 6.43 ± 0.15a | ||
PGR (cm·d-1) | 0.07 ± 0.03a | 0.06 ± 0.01a | 0.05 ± 0.01a | 0.12 ± 0.04a | 0.12 ± 0.03a | ||
干旱 Drought | 30 | PSL (cm) | 12.17 ± 0.88a* | 11.90 ± 0.73a* | 9.30 ± 0.37b* | 7.87 ± 0.36b* | 7.72 ± 0.42b* |
PDLN (No.) | 1.64 ± 0.06c* | 2.08 ± 0.15b* | 2.13 ± 0.05ab* | 2.18 ± 0.10ab* | 2.42 ± 0.17a* | ||
PGR (cm·d-1) | 0.24 ± 0.03a* | 0.23 ± 0.02a* | 0.15 ± 0.01b* | 0.10 ± 0.01b* | 0.09 ± 0.01b* | ||
60 | PSL (cm) | 17.30 ± 0.54a* | 15.06 ± 0.89b* | 11.15 ± 0.57c* | 9.09 ± 0.42d* | 7.58 ± 0.61d* | |
PDLN (No.) | 2.60 ± 0.04b | 3.19 ± 0.27a* | 3.33 ± 0.12a* | 3.51 ± 0.17a* | 3.65 ± 0.15a* | ||
PGR (cm·d-) | 0.17 ± 0.03a | 0.11 ± 0.01b* | 0.06 ± 0.01bc* | 0.04 ± 0.00c* | 0.02 ± 0.01c* | ||
90 | PSL (cm) | 20.29 ± 0.94a* | 18.14 ± 0.74a* | 13.61 ± 0.94b* | 9.43 ± 0.10c* | 8.31 ± 0.53c* | |
PDLN (No.) | 7.32 ± 0.16a | 5.46 ± 0.15b* | 4.82 ± 0.13bc* | 4.73 ± 0.34bc* | 4.08 ± 0.36c* | ||
PGR (cm·d-1) | 0.10 ± 0.02a | 0.10 ± 0.03a | 0.08 ± 0.03ab | 0.02 ± 0.01b | 0.03 ± 0.01b* |
Table 2 The effects of Pb on the growth of parent shoots of Phragmites australis grown in flood and dry environment after 30, 60 and 90 days of treatment (mean ± SE, n = 40)
水分 Water level | 处理时间 Treatment time (d) | 指标 Parameter | 铅处理浓度 Pb concentration of treatments (mg·kg-1) | ||||
---|---|---|---|---|---|---|---|
对照 Control | 500 | 1 500 | 3 000 | 4 500 | |||
淹水 Flood | 30 | PSL (cm) | 18.13 ± 0.81a | 16.64 ± 0.75ab | 15.54 ± 0.40b | 13.10 ± 0.52c | 13.24 ± 0.29c |
PDLN (No.) | 1.28 ± 0.05b | 1.54 ± 0.12ab | 1.73 ± 0.11a | 1.90 ± 0.06a | 1.84 ± 0.13a | ||
PGR (cm·d-1) | 0.44 ± 0.03a | 0.39 ± 0.02ab | 0.35 ± 0.01b | 0.27 ± 0.02c | 0.28 ± 0.01c | ||
60 | PSL (cm) | 23.86 ± 0.83a | 22.34 ± 1.52ab | 22.71 ± 0.72ab | 19.22 ± 1.04b | 18.17 ± 0.54b | |
PDLN (No.) | 3.57 ± 0.15b | 3.65 ± 0.22b | 4.38 ± 0.14a | 4.50 ± 0.24a | 4.56 ± 0.08a | ||
PGR (cm·d-1) | 0.19 ± 0.02a | 0.19 ± 0.03a | 0.24 ± 0.01a | 0.21 ± 0.04a | 0.16 ± 0.02a | ||
90 | PSL (cm) | 26.00 ± 0.96a | 24.03 ± 1.84a | 24.21 ± 0.97a | 22.80 ± 0.57a | 21.68 ± 1.20a | |
PDLN (No.) | 7.02 ± 0.06a | 6.59 ± 0.43a | 6.61 ± 0.22a | 6.80 ± 0.16a | 6.43 ± 0.15a | ||
PGR (cm·d-1) | 0.07 ± 0.03a | 0.06 ± 0.01a | 0.05 ± 0.01a | 0.12 ± 0.04a | 0.12 ± 0.03a | ||
干旱 Drought | 30 | PSL (cm) | 12.17 ± 0.88a* | 11.90 ± 0.73a* | 9.30 ± 0.37b* | 7.87 ± 0.36b* | 7.72 ± 0.42b* |
PDLN (No.) | 1.64 ± 0.06c* | 2.08 ± 0.15b* | 2.13 ± 0.05ab* | 2.18 ± 0.10ab* | 2.42 ± 0.17a* | ||
PGR (cm·d-1) | 0.24 ± 0.03a* | 0.23 ± 0.02a* | 0.15 ± 0.01b* | 0.10 ± 0.01b* | 0.09 ± 0.01b* | ||
60 | PSL (cm) | 17.30 ± 0.54a* | 15.06 ± 0.89b* | 11.15 ± 0.57c* | 9.09 ± 0.42d* | 7.58 ± 0.61d* | |
PDLN (No.) | 2.60 ± 0.04b | 3.19 ± 0.27a* | 3.33 ± 0.12a* | 3.51 ± 0.17a* | 3.65 ± 0.15a* | ||
PGR (cm·d-) | 0.17 ± 0.03a | 0.11 ± 0.01b* | 0.06 ± 0.01bc* | 0.04 ± 0.00c* | 0.02 ± 0.01c* | ||
90 | PSL (cm) | 20.29 ± 0.94a* | 18.14 ± 0.74a* | 13.61 ± 0.94b* | 9.43 ± 0.10c* | 8.31 ± 0.53c* | |
PDLN (No.) | 7.32 ± 0.16a | 5.46 ± 0.15b* | 4.82 ± 0.13bc* | 4.73 ± 0.34bc* | 4.08 ± 0.36c* | ||
PGR (cm·d-1) | 0.10 ± 0.02a | 0.10 ± 0.03a | 0.08 ± 0.03ab | 0.02 ± 0.01b | 0.03 ± 0.01b* |
水分 Water level | 处理时间 Treatment time (d) | 指标 Parameter | 铅处理浓度 Pb concentration of treatments (mg·kg-1) | ||||
---|---|---|---|---|---|---|---|
对照 Control | 500 | 1 500 | 3 000 | 4 500 | |||
淹水 Flood | 30 | OSL (cm) | 15.08 ± 0.88a | 13.20 ± 0.99ab | 11.28 ± 0.95b | 8.42 ± 0.26c | 7.92 ± 0.35c |
ODLN (No.) | 0.27 ± 0.09a | 0.28 ± 0.05a | 0.06 ± 0.03b | 0.06 ± 0.03b | 0.00 ± 0.00b | ||
OGR (cm·d-1) | 0.76 ± 0.05a | 0.66 ± 0.05ab | 0.57 ± 0.05b | 0.42 ± 0.01c | 0.40 ± 0.02c | ||
60 | OSL (cm) | 31.06 ± 0.37a | 30.08 ± 0.42a | 28.53 ± 0.77a | 20.12 ± 0.73b | 15.24 ± 0.83c | |
ODLN (No.) | 1.49 ± 0.10a | 1.50 ± 0.17a | 1.74 ± 0.34a | 1.82 ± 0.20a | 1.96 ± 0.22a | ||
OGR (cm·d-1) | 0.53 ± 0.03a | 0.57 ± 0.02a | 0.58 ± 0.02a | 0.39 ± 0.03b | 0.24 ± 0.03c | ||
90 | OSL (cm) | 41.22 ± 1.14a | 40.97 ± 1.19a | 40.65 ± 1.68a | 32.98 ± 1.78b | 22.41 ± 0.74c | |
ODLN (No.) | 3.28 ± 0.15a | 2.99 ± 0.27ab | 2.95 ± 0.22ab | 3.10 ± 0.20ab | 2.53 ± 0.35b | ||
OGR (cm·d-1) | 0.34 ± 0.05ab | 0.36 ± 0.03a | 0.40 ± 0.04a | 0.43 ± 0.04a | 0.24 ± 0.03b | ||
干旱Drought | 30 | OSL (cm) | 4.50 ± 0.65a* | 3.38 ± 0.63a* | 3.38 ± 0.55a* | 3.50 ± 0.29a* | 1.50 ± 0.05b* |
ODLN (No.) | 0.00 ± 0.00a* | 0.00 ± 0.00a* | 0.00 ± 0.00a | 0.00 ± 0.00a | 0.00 ± 0.00a | ||
OGR (cm·d-1) | 0.23 ± 0.03a* | 0.17 ± 0.03a* | 0.17 ± 0.03a* | 0.18 ± 0.01a* | 0.07 ± 0.00b* | ||
60 | OSL (cm) | 19.95 ± 1.08a* | 11.23 ± 0.43b* | 5.55 ± 0.75c* | 4.44 ± 0.87c* | 3.65 ± 0.61c* | |
ODLN (No.) | 0.10 ± 0.04a* | 0.14 ± 0.05a* | 0.15 ± 0.05a* | 0.25 ± 0.16a* | 0.06 ± 0.06a* | ||
OGR (cm·d-1) | 0.52 ± 0.03a | 0.26 ± 0.03b* | 0.07 ± 0.04cd* | 0.03 ± 0.02d* | 0.14 ± 0.04c | ||
90 | OSL (cm) | 28.82 ± 1.16a* | 24.56 ± 0.76b* | 14.46 ± 1.00c* | 8.45 ± 0.25d* | 4.13 ± 0.12e* | |
ODLN (No.) | 2.23 ± 0.28a* | 1.83 ± 0.11ab* | 1.40 ± 0.26ab* | 1.86 ± 0.34ab* | 1.21 ± 0.44b* | ||
OGR (cm·d-1) | 0.30 ± 0.06b | 0.44 ± 0.03a | 0.30 ± 0.05b | 0.13 ± 0.03c* | 0.03 ± 0.02c* |
Table 3 The effects of Pb on the growth of offspring shoots of Phragmites australis grown in flood and dry environment after 30, 60 and 90 days of treatment (means ± SE, n = 40)
水分 Water level | 处理时间 Treatment time (d) | 指标 Parameter | 铅处理浓度 Pb concentration of treatments (mg·kg-1) | ||||
---|---|---|---|---|---|---|---|
对照 Control | 500 | 1 500 | 3 000 | 4 500 | |||
淹水 Flood | 30 | OSL (cm) | 15.08 ± 0.88a | 13.20 ± 0.99ab | 11.28 ± 0.95b | 8.42 ± 0.26c | 7.92 ± 0.35c |
ODLN (No.) | 0.27 ± 0.09a | 0.28 ± 0.05a | 0.06 ± 0.03b | 0.06 ± 0.03b | 0.00 ± 0.00b | ||
OGR (cm·d-1) | 0.76 ± 0.05a | 0.66 ± 0.05ab | 0.57 ± 0.05b | 0.42 ± 0.01c | 0.40 ± 0.02c | ||
60 | OSL (cm) | 31.06 ± 0.37a | 30.08 ± 0.42a | 28.53 ± 0.77a | 20.12 ± 0.73b | 15.24 ± 0.83c | |
ODLN (No.) | 1.49 ± 0.10a | 1.50 ± 0.17a | 1.74 ± 0.34a | 1.82 ± 0.20a | 1.96 ± 0.22a | ||
OGR (cm·d-1) | 0.53 ± 0.03a | 0.57 ± 0.02a | 0.58 ± 0.02a | 0.39 ± 0.03b | 0.24 ± 0.03c | ||
90 | OSL (cm) | 41.22 ± 1.14a | 40.97 ± 1.19a | 40.65 ± 1.68a | 32.98 ± 1.78b | 22.41 ± 0.74c | |
ODLN (No.) | 3.28 ± 0.15a | 2.99 ± 0.27ab | 2.95 ± 0.22ab | 3.10 ± 0.20ab | 2.53 ± 0.35b | ||
OGR (cm·d-1) | 0.34 ± 0.05ab | 0.36 ± 0.03a | 0.40 ± 0.04a | 0.43 ± 0.04a | 0.24 ± 0.03b | ||
干旱Drought | 30 | OSL (cm) | 4.50 ± 0.65a* | 3.38 ± 0.63a* | 3.38 ± 0.55a* | 3.50 ± 0.29a* | 1.50 ± 0.05b* |
ODLN (No.) | 0.00 ± 0.00a* | 0.00 ± 0.00a* | 0.00 ± 0.00a | 0.00 ± 0.00a | 0.00 ± 0.00a | ||
OGR (cm·d-1) | 0.23 ± 0.03a* | 0.17 ± 0.03a* | 0.17 ± 0.03a* | 0.18 ± 0.01a* | 0.07 ± 0.00b* | ||
60 | OSL (cm) | 19.95 ± 1.08a* | 11.23 ± 0.43b* | 5.55 ± 0.75c* | 4.44 ± 0.87c* | 3.65 ± 0.61c* | |
ODLN (No.) | 0.10 ± 0.04a* | 0.14 ± 0.05a* | 0.15 ± 0.05a* | 0.25 ± 0.16a* | 0.06 ± 0.06a* | ||
OGR (cm·d-1) | 0.52 ± 0.03a | 0.26 ± 0.03b* | 0.07 ± 0.04cd* | 0.03 ± 0.02d* | 0.14 ± 0.04c | ||
90 | OSL (cm) | 28.82 ± 1.16a* | 24.56 ± 0.76b* | 14.46 ± 1.00c* | 8.45 ± 0.25d* | 4.13 ± 0.12e* | |
ODLN (No.) | 2.23 ± 0.28a* | 1.83 ± 0.11ab* | 1.40 ± 0.26ab* | 1.86 ± 0.34ab* | 1.21 ± 0.44b* | ||
OGR (cm·d-1) | 0.30 ± 0.06b | 0.44 ± 0.03a | 0.30 ± 0.05b | 0.13 ± 0.03c* | 0.03 ± 0.02c* |
生长指标 Growth parameters | 双因素方差分析 Two-way AVONA | |||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
根长 Root length | 184.571 | < 0.001 | 273.946 | < 0.001 | 4.605 | < 0.01 |
根茎长 Rhizome length | 65.735 | < 0.001 | 126.045 | < 0.002 | 5.271 | < 0.01 |
根茎数 No. of rhizomes | 92.408 | < 0.001 | 207.906 | < 0.003 | 8.108 | < 0.001 |
芽数 No. of buds | 42.807 | < 0.001 | 51.986 | < 0.004 | 6.879 | < 0.001 |
子株数 No. of offspring shoots | 12.658 | < 0.001 | 442.488 | < 0.005 | 4.293 | < 0.01 |
Table 4 Results of two-way ANOVA of the effect of Pb and water stress on rhizome growth, number of buds and offspring shoots of Phragmites australis
生长指标 Growth parameters | 双因素方差分析 Two-way AVONA | |||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
根长 Root length | 184.571 | < 0.001 | 273.946 | < 0.001 | 4.605 | < 0.01 |
根茎长 Rhizome length | 65.735 | < 0.001 | 126.045 | < 0.002 | 5.271 | < 0.01 |
根茎数 No. of rhizomes | 92.408 | < 0.001 | 207.906 | < 0.003 | 8.108 | < 0.001 |
芽数 No. of buds | 42.807 | < 0.001 | 51.986 | < 0.004 | 6.879 | < 0.001 |
子株数 No. of offspring shoots | 12.658 | < 0.001 | 442.488 | < 0.005 | 4.293 | < 0.01 |
Fig. 1 Effects of Pb pollution on growth of below-ground organs and abundance of above-ground offspring shoots of Phragmites australis in flood and dry environment (mean ± SE, n = 40). Different lowercase letters indicate significant differences (p ≤ 0.05) between Pb levels within one water treatment level, and * indicates significant difference (p ≤ 0.05) between water treatment and drought treatment within one Pb level.
双因素方差分析 Two-way AVONA | ||||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
根 Roots | 63.55 | < 0.001 | 124.45 | < 0.001 | 2.56 | 0.06 |
根茎 Rhizomes | 55.76 | < 0.001 | 77.79 | < 0.001 | 4.41 | < 0.01 |
母株 Parent shoots | 7.31 | < 0.001 | 39.32 | < 0.001 | 7.48 | < 0.001 |
子株 Offspring shoots | 42.52 | < 0.001 | 270.30 | < 0.001 | 6.95 | < 0.001 |
Table 5 Results of two-way ANOVA of the effect of Pb and water stress on biomass of Phragmites australis
双因素方差分析 Two-way AVONA | ||||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
根 Roots | 63.55 | < 0.001 | 124.45 | < 0.001 | 2.56 | 0.06 |
根茎 Rhizomes | 55.76 | < 0.001 | 77.79 | < 0.001 | 4.41 | < 0.01 |
母株 Parent shoots | 7.31 | < 0.001 | 39.32 | < 0.001 | 7.48 | < 0.001 |
子株 Offspring shoots | 42.52 | < 0.001 | 270.30 | < 0.001 | 6.95 | < 0.001 |
Fig. 2 The effects of Pb pollution on biomass accumulation of different organs of Phragmites australis in flood and dry environment (mean ± SE, n = 40). Different lowercase letters indicate significant differences (p ≤ 0.05) between Pb levels within one water treatment level, and * indicates significant difference (p ≤ 0.05) between water treatment and drought treatment within one Pb level.
Fig. 3 The percentage of different organ biomass in total biomass of Phragmites australis subjected to Pb concentration in flood and dry environment (mean ± SE, n = 40). Different lowercase letters indicate significant differences (p ≤ 0.05) between Pb levels within one water treatment level, and * indicates significant difference (p ≤ 0.05) between water treatment and drought treatment within one Pb level.
光合参数 Photosynthetic parameters | 双因素方差分析 Two-way AVONA | |||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
净光合速率 Net photosynthetic rate | 12.69 | <0.001 | 20.38 | <0.001 | 6.92 | <0.001 |
气孔导度 Stomatal conductance | 16.90 | <0.001 | 95.36 | <0.001 | 3.80 | <0.01 |
胞间CO2浓度 Intercellular CO2 concentration | 9.80 | <0.001 | 111.35 | <0.001 | 1.54 | 0.23 |
蒸腾速率 Transpiration rate | 6.08 | <0.001 | 88.80 | <0.001 | 1.07 | 0.38 |
Table 6 Results of two-way ANOVA of the effect of Pb and water stress on photosynthesis of Phragmites australis
光合参数 Photosynthetic parameters | 双因素方差分析 Two-way AVONA | |||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅 × 水 Pb × water | ||||
F | p | F | p | F | p | |
净光合速率 Net photosynthetic rate | 12.69 | <0.001 | 20.38 | <0.001 | 6.92 | <0.001 |
气孔导度 Stomatal conductance | 16.90 | <0.001 | 95.36 | <0.001 | 3.80 | <0.01 |
胞间CO2浓度 Intercellular CO2 concentration | 9.80 | <0.001 | 111.35 | <0.001 | 1.54 | 0.23 |
蒸腾速率 Transpiration rate | 6.08 | <0.001 | 88.80 | <0.001 | 1.07 | 0.38 |
Fig. 4 The effects of Pb pollution on photosynthesis of parent and offspring shoots of Phragmites australis in flood and dry environment (mean ± SE, n = 16). Different lowercase letters indicate significant differences (p ≤ 0.05) between Pb levels within one water treatment level, and * indicates significant difference (p ≤ 0.05) between water treatment and drought treatment within one Pb level.
Fig. 5 The Pb concentrations in different parts of Phragmites australis subjected to Pb in flood and dry environment (mean ± SE, n = 4). Different lowercase letters indicate significant differences (p ≤0.05) between Pb levels within one water treatment level, and * indicates significant difference (p ≤ 0.05) between water treatment and drought treatment within one Pb level.
双因素方差分析 Two-way AVONA | ||||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅×水 Pb × water | ||||
F | p | F | p | F | p | |
根 Roots | 472.06 | <0.001 | 1 061.42 | <0.001 | 166.30 | <0.001 |
根茎 Rhizomes | 174.54 | <0.001 | 317.95 | <0.001 | 79.07 | <0.001 |
母株 Parent shoots | 3 304.20 | <0.001 | 369.17 | <0.001 | 434.26 | <0.001 |
子株 Offspring shoots | 2 392.36 | <0.001 | 42.83 | <0.001 | 31.27 | <0.001 |
Table 7 Results of two-way ANOVA of the effect of Pb and water stress on Pb concentrations in organs of Phragmites australis
双因素方差分析 Two-way AVONA | ||||||
---|---|---|---|---|---|---|
铅 Pb | 水 Water | 铅×水 Pb × water | ||||
F | p | F | p | F | p | |
根 Roots | 472.06 | <0.001 | 1 061.42 | <0.001 | 166.30 | <0.001 |
根茎 Rhizomes | 174.54 | <0.001 | 317.95 | <0.001 | 79.07 | <0.001 |
母株 Parent shoots | 3 304.20 | <0.001 | 369.17 | <0.001 | 434.26 | <0.001 |
子株 Offspring shoots | 2 392.36 | <0.001 | 42.83 | <0.001 | 31.27 | <0.001 |
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