Bulletin of Botanical Research ›› 2023, Vol. 43 ›› Issue (6): 846-856.doi: 10.7525/j.issn.1673-5102.2023.06.007
• Physiology and Ecology • Previous Articles Next Articles
Tianmeng REN1, Yu BAO1, Yaxun SU2, Qingbin CHEN2, Liying WEI2, Ruoxuan JI1, Xiao YU1, Xinli XIA1, Weilun YIN1, Chao LIU1(
)
Received:2023-02-22
Online:2023-11-20
Published:2023-11-08
Contact:
Chao LIU
E-mail:liuchao1306@bjfu.edu.cn
About author:REN Tianmeng(1996—),male,postgraduate,mainly engaged in the research of tree stress biology.
CLC Number:
Tianmeng REN, Yu BAO, Yaxun SU, Qingbin CHEN, Liying WEI, Ruoxuan JI, Xiao YU, Xinli XIA, Weilun YIN, Chao LIU. Effects of Different Pruning Treatments on Growth and Photosynthetic Characteristics of 10-year-old Triploid Populus tomentosa[J]. Bulletin of Botanical Research, 2023, 43(6): 846-856.
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URL: https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2023.06.007
Fig.2
Effects of different pruning on the growth of 10-year-old triploid P.tomentosaA,C,E were the interannual changes of height,DBH and volume of triploid P.tomentosa respectively;B,D,F were the ΔH,ΔD and ΔV of P.tomentosa in each year respectively;Different lowercase letters indicated significant difference between pruning treatments(P<0.05);the same as below
Table 1
Multivariate variance analysis of pruning treatment on growth of P.tomentosa from 2017—2019( F value)
差异来源 Source of variance | 树高 Height | 胸径 DBH | 材积 Volume | 树高增长率 ΔH | 胸径增长率 ΔD | 材积增长率 ΔV |
|---|---|---|---|---|---|---|
| 品系Strain | 15.934*** | 16.152*** | 24.355*** | 0.003 | 21.056*** | 4.410* |
| 处理Treatment | 3.985* | 4.967** | 5.998** | 3.772* | 3.101* | 0.211 |
| 年份Year | 200.093*** | 26.363*** | 83.223*** | 25.418*** | 203.532*** | 40.486*** |
| 品系×处理Strain×Treatment | 6.685** | 6.577** | 5.570** | 0.127 | 0.805 | 0.083 |
| 品系×年份Strain×Year | 0.471 | 0.583 | 1.009 | 3.897* | 8.303*** | 8.707*** |
| 处理×年份Treatment×Year | 1.273 | 0.116 | 0.128 | 4.889*** | 1.231 | 1.299 |
| 品系×处理×年Strain×Treatment×Year | 0.150 | 0.022 | 0.036 | 1.194 | 0.335 | 0.673 |
Table 2
Multiple comparisons of ΔH,ΔD and ΔV of triploid P. tomentosa among different pruning years and strains
品系 Strain | 差异来源 Source of variance | 处理 Treatment | 树高增长率 ΔH/% | 胸径增长率 ΔD/% | 材积增长率 ΔV/% |
|---|---|---|---|---|---|
| B301 | 修枝强度 Pruning intensity | CK | 11.34±9.82 Aa | 4.83±3.91 Aa | 15.51±10.34 Aa |
| Q | 13.18±13.18 Aa | 4.48±3.60 Aa | 15.38±9.65 Aa | ||
| Z | 10.12±9.16 Aa | 4.70±3.82 Aa | 14.16±8.83 Aa | ||
年份 Year | 2017 | 12.22±7.89 Aa | 4.54±2.61 Ba | 20.28±9.56 Aa | |
| 2018 | 6.79±6.49 Bb | 1.43±1.15 Ca | 9.14±6.63 Bb | ||
| 2019 | 15.78±14.87 Aa | 7.98±3.57 Aa | 15.56±8.83 Aa | ||
| S86 | 修枝强度 Pruning intensity | CK | 10.91±9.04 Aa | 4.21±3.39 Aa | 14.38±8.40 Aa |
| Q | 13.09±10.70 Aa | 3.26±2.40 Bb | 13.57±6.99 Aa | ||
| Z | 10.76±8.41 Aa | 3.50±2.78 ABb | 12.67±7.23 Aa | ||
年份 Year | 2017 | 9.41±5.79 Bb | 3.68±2.78 Bb | 15.91±8.76 Ab | |
| 2018 | 9.81±7.46 Ba | 1.53±1.18 Ca | 11.81±6.66 Ba | ||
| 2019 | 15.75±12.68 Aa | 5.84±2.72 Ab | 13.21±6.76 Bb |
Table 3
Comparison of photosynthetic characteristics of different canopies of P. tomentosa
品系 Strain | 冠层 Canopy | 个案数量 Number of cases | 净光合速率 Pn/(μmol·m-2·s-1) | 蒸腾速率 Tr/(mmol·m-2·s-1) | 气孔导度 Gs/(mmol·m-2·s-1) | 瞬时水分利用效率 WUE/(mmol·m-2·s-1) |
|---|---|---|---|---|---|---|
| B301 | 上层 Upper layer( h≥10 m) | 84 | 6.62±4.71 a | 2.05±1.55 a | 0.10±0.08 ab | 3.72±2.24 a |
中层 Middle layer(7 m≤h<10 m) | 167 | 5.76±4.34 b | 1.79±1.25 b | 0.09±0.08 b | 3.56±2.27 a | |
下层 Lower layer(5 m≤h<7 m) | 252 | 5.83±4.81 ab | 1.99±1.77 ab | 0.10±0.10 a | 3.34±2.16 a | |
| S86 | 上层 Upper layer(h≥10 m) | 82 | 6.32±4.30 a | 1.99±1.36 a | 0.09±0.07 a | 3.76±2.99 a |
中层 Middle layer(7 m≤h<10 m) | 163 | 5.58±4.41 b | 1.85±1.37 ab | 0.08±0.07 a | 3.70±3.39 a | |
下层 Lower layer(5 m≤h<7 m) | 246 | 5.28±4.00 b | 1.84±1.27 b | 0.08±0.07 a | 3.67±3.37 a |
Table 4
Multi-factor variance analysis of photosynthetic characteristics of P.tomentosa under pruning treatment from 2017-2019( F value)
差异来源 Source of variance | 净光合速率 Pn | 蒸腾速率 Tr | 气孔导度 Gs | 瞬时水分利用效率 WUE |
|---|---|---|---|---|
品系 Strain | 0.395 | 0.010 | 0.925 | 1.857 |
处理 Treatment | 9.387*** | 9.194*** | 7.891*** | 0.326 |
年份 Year | 25.391*** | 23.750*** | 20.556*** | 4.276* |
月份 Month | 46.134*** | 42.607*** | 20.236*** | 22.631*** |
品系×处理 Strain×Treatment | 0.098 | 0.133 | 0.257 | 0.361 |
品系×年份 Strain×Year | 2.691 | 2.111 | 2.160 | 1.900 |
品系×月份 Strain×Month | 0.306 | 2.042 | 2.470* | 3.031* |
处理×年份 Treatment ×Year | 0.069 | 0.401 | 0.450 | 0.512 |
处理×月份 Treat×Month | 0.197 | 0.112 | 0.097 | 0.212 |
年份×月份 Year×Month | 10.559*** | 9.179*** | 14.027*** | 3.121** |
品系×处理×年份 Strain×Treatment×Year | 0.114 | 0.287 | 0.432 | 0.327 |
品系×处理×月份 Strain×Treatment×Month | 0.114 | 0.309 | 0.372 | 0.754 |
品系×年份×月份 Strain×Year×Month | 0.808 | 0.400 | 2.112* | 1.251 |
处理×年份×月份 Treat×Year×Month | 0.278 | 0.196 | 0.437 | 0.457 |
品系×处理×年份×月份 Strain×Treatment×Year×Month | 0.207 | 0.400 | 0.276 | 0.286 |
Table 5
Multiple comparisons of photosynthetic characteristics of triploid P. tomentosa among different pruning treatments,years and strains
品系 Strain | 差异来源 Source of variance | 处理 Treatment | 净光合速率 Pn/(μmol·m-2·s-1) | 蒸腾速率 Tr/(mmol·m-2·s-1) | 气孔导度 Gs/(mmol·m-2·s-1) | 瞬时水分利用效率 WUE/(mmol·m-2·s-1) |
|---|---|---|---|---|---|---|
| B301 | 修枝强度 Pruning intensity | CK | 5.75±4.36 Ba | 1.91±1.37 Ba | 0.09±0.08 Ba | 3.38±1.73 Aa |
| Q | 6.18±4.33 Ba | 1.79±1.21 Ba | 0.08±0.06 ABa | 3.69±2.03 Aa | ||
| Z | 7.58±4.87Aa | 2.37±1.75 Aa | 0.12±0.10 Aa | 3.38±1.56 Aa | ||
年份 Year | 2017 | 4.06±2.15 Ca | 1.22±0.67 Bb | 0.06±0.05 Ca | 3.54±1.32 Aa | |
| 2018 | 8.44±4.83 Aa | 2.37±1.58 Aa | 0.13±0.10 Aa | 3.73±1.36 Aa | ||
| 2019 | 6.45±4.81 Ba | 2.30±1.61 Aa | 0.10±0.08 Ba | 3.20±2.36 Aa | ||
| S86 | 修枝强度 Pruning intensity | CK | 5.57±3.83 Ba | 1.87±1.22 Ba | 0.08±0.06 Ba | 3.64±3.34 Aa |
| Q | 5.86±4.19 ABa | 1.82±1.31 Ba | 0.08±0.06 Ba | 3.81±2.66 Aa | ||
| Z | 7.02±4.39 Aa | 2.28±1.42 Aa | 0.10±0.08 Aa | 3.81±3.65 Aa | ||
年份 Year | 2017 | 4.50±2.93 Ba | 1.57±0.86 Ba | 0.07±0.06 Ba | 3.00±1.49 Bb | |
| 2018 | 7.07±4.06 Ab | 2.11±1.33 Aa | 0.10±0.07 Aa | 4.63±4.42 Aa | ||
| 2019 | 6.61±4.74 Aa | 2.22±1.56 Aa | 0.09±0.07 Aa | 3.53±2.74 ABa |
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