CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2021, Vol. 43 ›› Issue (6): 1099-1107.doi: 10.19802/j.issn.1007-9084.2020233
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Peng ZHONG1(), Li-li MIAO1, Jie LIU1, Jian-li WANG2, Hai-yan LU1, Hong-jiu YU1, Nan ZHANG1
Received:
2020-07-30
Online:
2021-12-22
Published:
2021-12-23
CLC Number:
Peng ZHONG, Li-li MIAO, Jie LIU, Jian-li WANG, Hai-yan LU, Hong-jiu YU, Nan ZHANG. Effects of densities and planting mode on photosynthetic characteristics and yield of Cyperus esculentus during tuber growth stage[J]. CHINESE JOURNAL OF OIL CROP SCIENCES, 2021, 43(6): 1099-1107.
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URL: http://www.jouroilcrops.cn/EN/10.19802/j.issn.1007-9084.2020233
Fig. 1
Effects of different population structures on canopy apparent photosynthesis (CAP) of Cyperus esculentusNote: S1: tuber formative stage; S2: middle stage of tuber growth; S3: tuber maturity stage; A1, A2 and A3 are densities as 9×104, 1.1×105 and 1.3×105 plants per hectare respectively; B1, B2 and B3 are planting modes as respectively 110 cm (3 lines on ridge, 30 cm of each line), 65 cm (2 lines on ridge, 20 cm of each line), and 45 cm (single line on ridge) respectively; C1 and C2 are rectangle seeding and triangle sedding respectively. 18 treatment combinations are in figure. Different lowercase letters in the same stage indicate significant difference at 0.05 level among treatments. Same as below
Table 1
Changes of Chl (a+b) content of leaves in canopy
处理 | 叶绿素a+b含量 Chl (a+b) content /(mg/g FW) | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 1.88±0.19 c | 3.84±0.21 c | 4.13±0.34 c | 3.27±0.24 e |
C2 | 2.12±0.16 d | 4.11±0.37 de | 4.38±0.28 de | 3.62±0.15 fg | ||
B2 | C1 | 2.34±0.19 e | 4.33±0.42 fg | 3.38±0.21 a | 2.47±0.08 b | |
C2 | 2.69±0.11 f | 4.67±0.36 hi | 3.61±0.19 b | 2.74±0.12 c | ||
B3 | C1 | 1.42±0.11 a | 3.40±0.24 a | 3.65±0.25 b | 3.04±0.23 d | |
C2 | 1.65±0.12 b | 3.64±0.30 b | 3.88±0.16 c | 3.34±0.31 e | ||
A2 | B1 | C1 | 3.32±0.15 h | 5.30±0.45 jk | 5.89±0.48 j | 4.36±0.27 h |
C2 | 3.62±0.21 i | 5.70±0.43 m | 5.82±0.52 i | 4.91±0.38 i | ||
B2 | C1 | 4.12±0.24 j | 5.24±0.26 j | 5.41±0.37 f | 2.79±0.14 c | |
C2 | 4.44±0.26 k | 5.49±0.37 k | 5.45±0.44 gh | 3.21±0.19 d | ||
B3 | C1 | 2.97±0.14 g | 3.95±0.18 cd | 5.36±0.45 f | 3.60±0.22 f | |
C2 | 3.19±0.22 h | 4.18±0.29 ef | 5.56±0.51 h | 3.82±0.25 g | ||
A3 | B1 | C1 | 5.00±0.41 p | 4.92±0.32 i | 5.24±0.43 f | 3.34±0.28 e |
C2 | 5.24±0.46 q | 5.29±0.26 jk | 5.42±0.56 gh | 3.56±0.15 f | ||
B2 | C1 | 5.51±0.39 r | 5.39±0.46 k | 4.18±0.34 d | 1.97±0.07 a | |
C2 | 5.76±0.43 s | 5.73±0.51 n | 4.47±0.26 e | 2.28±0.11 b | ||
B3 | C1 | 4.62±0.28 m | 4.51±0.19 g | 4.92±0.43e | 2.68±0.14 c | |
C2 | 4.87±0.32 n | 4.81±0.38 i | 5.22±0.47 g | 3.02±0.18 d |
Table 2
Changes of Chl(a+b) content of leaves in lower parts
处理 | 叶绿素a+b含量 Chl(a+b) content of leaves /(mg/g FW) | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 1.36±0.08 ab | 2.42±0.12 cd | 2.13±0.14 f | 1.21±0.06 c |
C2 | 1.59±0.06 c | 3.16±0.18 f | 2.36±0.16 g | 1.57±0.08 d | ||
B2 | C1 | 1.83±0.09 d | 3.31±0.14 f | 1.37±0.07 b | 0.96±0.02 a | |
C2 | 2.14±0.11 e | 3.67±0.17 h | 1.59±0.06 d | 1.23±0.05 c | ||
B3 | C1 | 1.21±0.06 a | 2.39±0.11 cd | 1.63±0.09 d | 1.52±0.07 d | |
C2 | 1.44±0.04 bc | 2.81±0.12 e | 1.86±0.07 e | 1.77±0.07 e | ||
A2 | B1 | C1 | 2.82±0.12 g | 4.24±0.23 i | 3.69±0.16 k | 2.25±0.14 f |
C2 | 3.11±0.14 h | 4.60±0.27 j | 3.87±0.18 m | 2.63±0.17 g | ||
B2 | C1 | 3.60±0.16 jk | 4.11±0.24 i | 3.12±0.17 h | 1.21±0.05 c | |
C2 | 3.92±0.18 m | 4.46±0.26 j | 3.42±0.16 j | 1.57±0.07 d | ||
B3 | C1 | 2.39±0.14 f | 3.57±0.19 g | 3.36±0.20 g | 1.75±0.07 e | |
C2 | 2.54±0.12 f | 3.18±0.21 f | 3.56±0.26 j | 1.80±0.08 e | ||
A3 | B1 | C1 | 2.98±0.16 gh | 3.22±0.23 f | 3.23±0.21 i | 1.44±0.06 d |
C2 | 3.21±0.11 i | 2.26±0.14 c | 3.41±0.24 g | 1.69±0.07 e | ||
B2 | C1 | 3.47±0.17 j | 2.37±0.12 c | 1.20±0.04 a | 0.92±0.02 a | |
C2 | 3.73±0.15 km | 2.72±0.13 de | 1.42±0.05 bc | 1.05±0.03 b | ||
B3 | C1 | 3.26±0.13 i | 1.42±0.08 b | 1.41±0.06 b | 1.01±0.02 a | |
C2 | 3.84±0.14 m | 1.86±0.09 a | 1.56±0.07 c | 1.16±0.04 bc |
Table 3
Effects of different population structures on Fv/Fm of leaves in canopy
处理 | 最大光能转换效率 Fv/Fm | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 0.273±0.018 b | 0.480±0.024 f | 0.426±0.031 f | 0.227±0.022 e |
C2 | 0.320±0.026 c | 0.507±0.025 g | 0.454±0.022 g | 0.262±0.031 f | ||
B2 | C1 | 0.327±0.029 c | 0.530±0.028 h | 0.352±0.012 d | 0.147±0.011 b | |
C2 | 0.364±0.031 d | 0.563±0.023 i | 0.385±0.014 f | 0.175±0.020 c | ||
B3 | C1 | 0.248±0.017 a | 0.440±0.025 d | 0.381±0.020 f | 0.204±0.021 d | |
C2 | 0.263±0.018 b | 0.460±0.022 e | 0.419±0.021 e | 0.234±0.022 e | ||
A2 | B1 | C1 | 0.437±0.032 f | 0.633±0.017 k | 0.592±0.025 m | 0.337±0.012 h |
C2 | 0.456±0.030 g | 0.657±0.032 m | 0.692±0.032 n | 0.391±0.022 i | ||
B2 | C1 | 0.513±0.027 h | 0.613±0.020 j | 0.520±0.021 h | 0.179±0.011 c | |
C2 | 0.540±0.037 i | 0.636±0.031 k | 0.564±0.022 j | 0.221±0.022 de | ||
B3 | C1 | 0.392±0.031 e | 0.480±0.024 f | 0.541±0.027 i | 0.261±0.011 f | |
C2 | 0.425±0.021 f | 0.524±0.017 gh | 0.587±0.023 k | 0.283±0.031 g | ||
A3 | B1 | C1 | 0.591±0.026 j | 0.372±0.016 ab | 0.362±0.027 de | 0.234±0.022 e |
C2 | 0.623±0.027 k | 0.421±0.015 c | 0.384±0.016 ef | 0.256±0.030 f | ||
B2 | C1 | 0.654±0.026 m | 0.433±0.021 cd | 0.223±0.022 a | 0.112±0.011 a | |
C2 | 0.685±0.029 n | 0.470±0.023 ef | 0.267±0.024 b | 0.128±0.011 b | ||
B3 | C1 | 0.557±0.027 i | 0.368±0.028 a | 0.320±0.020 c | 0.169±0.022 c | |
C2 | 0.582±0.030 j | 0.383±0.032 b | 0.372±0.012 de | 0.203±0.021 d |
Table 4
Effects of different population structures on Fv/Fm of leaves in lower parts
处理 | 最大光能转换效率 Fv/Fm | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 0.123±0.010 a | 0.144±0.013 a | 0.124±0.011 ab | 0.111±0.009 cd |
C2 | 0.164±0.011 bc | 0.213±0.011 cde | 0.140±0.010 de | 0.114±0.008 d | ||
B2 | C1 | 0.181±0.012 c | 0.235±0.021 ef | 0.117±0.011 ab | 0.100±0.007 a | |
C2 | 0.212±0.020 d | 0.267±0.014 h | 0.135±0.010 cd | 0.112±0.008 d | ||
B3 | C1 | 0.123±0.011 a | 0.137±0.011 a | 0.112±0.010 ab | 0.111±0.009 cd | |
C2 | 0.145±0.012 b | 0.176±0.010 b | 0.153±0.012 ef | 0.108±0.007 c | ||
A2 | B1 | C1 | 0.282±0.023 fg | 0.324±0.031 i | 0.221±0.021 i | 0.122±0.009 e |
C2 | 0.317±0.022 hi | 0.353±0.032 j | 0.254±0.030 j | 0.127±0.010 f | ||
B2 | C1 | 0.363±0.024jk | 0.326±0.028 i | 0.195±0.013 h | 0.123±0.010 ef | |
C2 | 0.398±0.026 m | 0.338±0.030 j | 0.228±0.021 i | 0.126±0.011 f | ||
B3 | C1 | 0.274±0.022 f | 0.221±0.021 de | 0.173±0.014 g | 0.123±0.012 ef | |
C2 | 0.248±0.021 e | 0.257±0.024 g | 0.227±0.022 i | 0.126±0.012 ef | ||
A3 | B1 | C1 | 0.291±0.023 fgh | 0.211±0.018 cd | 0.171±0.021 g | 0.111±0.008 cd |
C2 | 0.317±0.024 hij | 0.246±0.024 fg | 0.196±0.022 h | 0.113±0.009 d | ||
B2 | C1 | 0.353±0.024 jk | 0.204±0.017 c | 0.134±0.011 bcd | 0.104±0.006 b | |
C2 | 0.378±0.028 km | 0.228±0.022 de | 0.158±0.011 fg | 0.102±0.006 ab | ||
B3 | C1 | 0.332±0.026 i | 0.131±0.011 a | 0.106±0.010 a | 0.103±0.005 ab | |
C2 | 0.374±0.024 km | 0.174±0.013 b | 0.138±0.011 bcd | 0.102±0.005 ab |
Table 5
Effects of different population structures on qP of leaves in canopy
处理 | 光化学猝灭系数 qP | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 0.373±0.031 d | 0.542±0.012 i | 0.696±0.032 i | 0.363±0.019 g |
C2 | 0.424±0.027 e | 0.583±0.026 j | 0.734±0.033 j | 0.416±0.018 i | ||
B2 | C1 | 0.312±0.029 b | 0.441±0.033 e | 0.552±0.031 d | 0.280±0.012 c | |
C2 | 0.354±0.032 c | 0.514±0.030 h | 0.593±0.035 f | 0.295±0.014 d | ||
B3 | C1 | 0.283±0.025 a | 0.470±0.031 f | 0.626±0.031 g | 0.318±0.016 e | |
C2 | 0.317±0.028 b | 0.534±0.027 i | 0.668±0.028 h | 0.346±0.018 f | ||
A2 | B1 | C1 | 0.532±0.024 j | 0.727±0.029 q | 0.763±0.026 k | 0.551±0.022 m |
C2 | 0.557±0.031 k | 0.778±0.022 r | 0.815±0.027 n | 0.596±0.023 n | ||
B2 | C1 | 0.461±0.032 g | 0.617±0.028 k | 0.721±0.025 j | 0.425±0.017 i | |
C2 | 0.513±0.028 i | 0.643±0.021 m | 0.754±0.031 k | 0.467±0.019 j | ||
B3 | C1 | 0.440±0.021 f | 0.660±0.023 n | 0.750±0.028 k | 0.474±0.016 j | |
C2 | 0.483±0.023 h | 0.704±0.024 p | 0.785±0.013 m | 0.531±0.024 k | ||
A3 | B1 | C1 | 0.662±0.029 p | 0.442±0.032 e | 0.520±0.019 c | 0.384±0.018 h |
C2 | 0.725±0.023 q | 0.486±0.026 g | 0.572±0.034 e | 0.427±0.023 i | ||
B2 | C1 | 0.607±0.026 n | 0.327±0.029 a | 0.423±0.019 a | 0.211±0.010 a | |
C2 | 0.643±0.028 p | 0.358±0.031 b | 0.456±0.021 b | 0.253±0.011 b | ||
B3 | C1 | 0.582±0.025 m | 0.385±0.026 c | 0.511±0.031 c | 0.280±0.012 c | |
C2 | 0.625±0.030 n | 0.426±0.027 d | 0.545±0.034 d | 0.322±0.015 e |
Table 6
Effects of different population structures on qP of leaves in lower parts
处理 | 光化学猝灭系数 qP | |||||
---|---|---|---|---|---|---|
Treatments | 0 d | 25 d | 50 d | 75 d | ||
A1 | B1 | C1 | 0.194±0.013 d | 0.283±0.014 d | 0.450±0.024 f | 0.245±0.017 e |
C2 | 0.213±0.018 e | 0.322±0.021 ef | 0.482±0.028 h | 0.287±0.026 f | ||
B2 | C1 | 0.152±0.012 b | 0.221±0.016 a | 0.324±0.019 a | 0.114±0.012 a | |
C2 | 0.174±0.013 c | 0.254±0.017 b | 0.357±0.014 b | 0.152±0.011 b | ||
B3 | C1 | 0.142±0.012 a | 0.263±0.016 bc | 0.375±0.016 c | 0.193±0.014 c | |
C2 | 0.155±0.011 b | 0.277±0.018 cd | 0.424±0.022 e | 0.240±0.021 de | ||
A2 | B1 | C1 | 0.253±0.019 h | 0.521±0.027 p | 0.586±0.031 m | 0.372±0.028 i |
C2 | 0.284±0.021 i | 0.574±0.029 q | 0.628±0.032 n | 0.415±0.029 j | ||
B2 | C1 | 0.226±0.023 f | 0.362±0.032 hi | 0.505±0.026 j | 0.304±0.025 g | |
C2 | 0.253±0.024 h | 0.424±0.011 k | 0.531±0.024 k | 0.337±0.017 h | ||
B3 | C1 | 0.213±0.017 e | 0.464±0.013 m | 0.530±0.028 i | 0.341±0.016 h | |
C2 | 0.246±0.018 g | 0.500±0.025 n | 0.572±0.022 j | 0.377±0.023 i | ||
A3 | B1 | C1 | 0.327±0.026 k | 0.346±0.029 gh | 0.471±0.018 g | 0.234±0.020 de |
C2 | 0.354±0.031 m | 0.387±0.026 j | 0.518±0.017 i | 0.278±0.026 f | ||
B2 | C1 | 0.314±0.028 j | 0.310±0.018 e | 0.404±0.014 d | 0.120±0.010 a | |
C2 | 0.326±0.032 k | 0.335±0.023 fg | 0.426±0.012 e | 0.151±0.011 b | ||
B3 | C1 | 0.288±0.016 i | 0.354±0.022 h | 0.454±0.015 f | 0.176±0.014 c | |
C2 | 0.317±0.025 j | 0.378±0.024 i | 0.488±0.027 h | 0.225±0.018 d |
Table 7
Effects of different population structures on yield and yield components in C. esculentus
处理 Treatments | 单株粒数 Number of tubers per plant | 百粒重 100-kernel weight /g | 单株产量 Yield Per plant /g | 产量 Yield /(kg/hm2) | ||
---|---|---|---|---|---|---|
A1 | B1 | C1 | 140.59±7.62 c | 29.61±1.94 c | 41.63±2.14 d | 3746.52±102.71 c |
C2 | 138.37±7.21 bc | 32.24±2.02 de | 44.61±2.46 e | 4014.35±169.66 d | ||
B2 | C1 | 149.31±8.02 c | 22.31±1.33 a | 33.31±1.72 a | 2997.68±139.47 a | |
C2 | 145.62±7.54 c | 25.47±1.48 b | 37.09±1.82 b | 3338.54±104.32 b | ||
B3 | C1 | 144.61±6.87 c | 26.52±0.32 bc | 38.35±1.94 bc | 3451.67±116.16 b | |
C2 | 154.38±8.32 d | 28.43±0.69 c | 43.89±2.21 d | 3950.82±140.59 d | ||
A2 | B1 | C1 | 156.32±8.57 d | 39.22±2.14 g | 61.31±4.16 h | 6744.36±218.71 k |
C2 | 160.66±8.66 e | 42.55±3.36 h | 68.36±4.24 i | 7520.45±253.14 m | ||
B2 | C1 | 160.13±9.13 e | 33.21±2.84 d | 53.18±3.67 f | 5850.62±187.52 i | |
C2 | 157.50±8.54 de | 36.45±2.25 f | 57.41±3.94 g | 6315.31±225.26 j | ||
B3 | C1 | 160.27±8.87 e | 34.16±1.64 e | 54.75±3.52 f | 6023.69±202.68 j | |
C2 | 156.17±7.25 de | 37.49±1.88 f | 58.55±3.81 g | 6441.72±186.67 i | ||
A3 | B1 | C1 | 122.63±5.54 a | 30.22±0.06 c | 37.06±2.61 b | 4818.39±122.79 g |
C2 | 120.95±5.22 a | 32.56±1.12 de | 39.38±2.73 cd | 5120.35±194.53 h | ||
B2 | C1 | 134.19±6.35 b | 24.16±1.11 ab | 32.42±2.25 a | 4215.37±110.52 e | |
C2 | 133.14±6.12 b | 26.13±1.35 bc | 34.79±2.17 ab | 4523.41±113.66 f | ||
B3 | C1 | 135.53±6.34 bc | 25.58±1.44 b | 34.67±2.23 ab | 4508.96±109.34 f | |
C2 | 138.64±7.17 bc | 27.43±1.59 c | 38.03±2.86 bc | 4944.82±165.63 gh |
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