Rice Science ›› 2017, Vol. 24 ›› Issue (1): 1-9.DOI: 10.1016/j.rsci.2016.08.007
• • 下一篇
收稿日期:
2016-06-01
接受日期:
2016-08-24
出版日期:
2017-01-10
发布日期:
2016-11-01
. [J]. Rice Science, 2017, 24(1): 1-9.
Fig. 1. Weather variations throughout the year and photosynthetic light response curves (A-Q curves) on a typical cloudy day at Songjiang Experimental Station, Shanghai, China in 2015.A, Average daytime temperature and average daytime relative humidity (RH); B, Daily integrated photosynthetically active photon flux density (PPFD); C, Daytime light level variation of 10 September; D, A-Q curves measured outdoor under different incident radiations on 10 September. Lines in parts A and B correspond to the date of 10 September.
Fig. 2. Comparison of photosynthetic curves and stomatal conductance curves of attached leaves and detached leaves.A, Comparison of A-Ci curves measured on leaves before detachment (BD), immediately after detachment (0 h-AD), 1 h after detachment (1 h-AD) and 3 h after detachment (3 h-AD); B, Comparison of gs-Ci curves before and after detachment; C, Comparison of A-Q curves before and after detachment; D, Comparison of gs-Q curves before and after detachment. PPFD, Phtosynthetically active photon flux density.
Fig. 3. The new indoor photosynthetic measurements facility high-efficiency all-weather photosynthetic measurements system (HAPS). A, Overall design of HAPS; B, Self-designed high performance lithium battery with independent adaptor socket versus standard lead-acid battery provided by Li-Cor Inc; C, Plants in HAPS and measurement of distance to artificial light source of different leaf-position leaves; D, Attenuation of light levels with distance from the light source (Mean ± SD, n = 4), and the lines show the average distances from light source of flag leaf, the 3rd and the 5th leaves from the top; E, Light spectrum of artificial light-emitting diodes source used in HAPS.
Fig. 4. Comparison of measured photosynthetic carbon dioxide response curves (A-Ci curves, A) and photosynthetic light response curves (A-Q curves, B) using high-efficiency all-weather photosynthetic measurement systems and measured in situ (Mean ± SD).PPFD, Phtosynthetically active photon flux density.Four replications from different blocks were included in each curve, and no statistical significant difference was found.
Parameter | Tillering stage | Jointing stage | Flowering stage | Mid grain filling stage | |||||||
6 August (Outdoor) | 12 August (Indoor) | 19 August (Indoor) | 27 August (Outdoor) | 10 September (Outdoor) | 18 September (Indoor) | 2 October (Outdoor) | 9 October (Indoor) | ||||
Vcmax | 195.90 ± 17.54 | 197.77 ± 9.92 | 144.91 ± 13.52 | 136.95 ± 20.82 | 140.08 ± 9.35 | 136.07 ± 5.81 | 99.69 ± 12.88 | 92.18 ± 5.92 | |||
Jmax | 227.44 ± 17.66 | 221.77 ± 13.01 | 192.27 ± 14.06 | 190.43 ± 24.48 | 187.44 ± 6.85 | 182.41 ± 9.01 | 144.39 ± 11.88 | 142.69 ± 9.90 | |||
ϕCO2 | 0.047 ± 0.008 | 0.058 ± 0.004 | 0.048 ± 0.005 | 0.035 ± 0.021 | 0.028 ± 0.010 | 0.048 ± 0.005 | 0.045 ± 0.010 | 0.040 ± 0.010 | |||
Asat | 42.16 ± 3.76 | 33.12 ± 4.09 | 25.65 ± 2.55 | 29.82 ± 7.16 | 23.19 ± 4.43 | 24.69 ± 1.94 | 21.46 ± 5.11 | 17.74 ± 2.35 | |||
Rd | 1.67 ± 0.12 | 0.80 ± 0.13 | 0.93 ± 0.27 | 1.09 ± 0.42 | 0.85 ± 0.29 | 0.70 ± 0.22 | 1.03 ± 0.17 | 0.68 ± 0.04 | |||
Vcmax, Maximum rate of Rubisco carboxylation [(μmol/(m2∙s)]; Jmax, Maximum rate of electron transport for RuBP regeneration [(μmol/(m2∙s)]; ϕCO2, Maximum apparent quantum efficiency; Asat, Light-saturated photosynthetic rate [(μmol/(m2∙s)]; Rd, Dark respiration rate [(μmol/(m2∙s)]. |
Table 1 Fitted parameters measured indoor or outdoor at different growth stages (Mean ± SD, n = 4).
Parameter | Tillering stage | Jointing stage | Flowering stage | Mid grain filling stage | |||||||
6 August (Outdoor) | 12 August (Indoor) | 19 August (Indoor) | 27 August (Outdoor) | 10 September (Outdoor) | 18 September (Indoor) | 2 October (Outdoor) | 9 October (Indoor) | ||||
Vcmax | 195.90 ± 17.54 | 197.77 ± 9.92 | 144.91 ± 13.52 | 136.95 ± 20.82 | 140.08 ± 9.35 | 136.07 ± 5.81 | 99.69 ± 12.88 | 92.18 ± 5.92 | |||
Jmax | 227.44 ± 17.66 | 221.77 ± 13.01 | 192.27 ± 14.06 | 190.43 ± 24.48 | 187.44 ± 6.85 | 182.41 ± 9.01 | 144.39 ± 11.88 | 142.69 ± 9.90 | |||
ϕCO2 | 0.047 ± 0.008 | 0.058 ± 0.004 | 0.048 ± 0.005 | 0.035 ± 0.021 | 0.028 ± 0.010 | 0.048 ± 0.005 | 0.045 ± 0.010 | 0.040 ± 0.010 | |||
Asat | 42.16 ± 3.76 | 33.12 ± 4.09 | 25.65 ± 2.55 | 29.82 ± 7.16 | 23.19 ± 4.43 | 24.69 ± 1.94 | 21.46 ± 5.11 | 17.74 ± 2.35 | |||
Rd | 1.67 ± 0.12 | 0.80 ± 0.13 | 0.93 ± 0.27 | 1.09 ± 0.42 | 0.85 ± 0.29 | 0.70 ± 0.22 | 1.03 ± 0.17 | 0.68 ± 0.04 | |||
Vcmax, Maximum rate of Rubisco carboxylation [(μmol/(m2∙s)]; Jmax, Maximum rate of electron transport for RuBP regeneration [(μmol/(m2∙s)]; ϕCO2, Maximum apparent quantum efficiency; Asat, Light-saturated photosynthetic rate [(μmol/(m2∙s)]; Rd, Dark respiration rate [(μmol/(m2∙s)]. |
Fig. 5. Standard deviation of photosynthesis rate for each recording using high-efficiency all-weather photosynthetic measurement systems (HAPS) and in situ measurement during whole growth season. A, Standard deviation (SD) distribution of recordings using HAPS for A-Ci curves; B, SD distribution of recordings for in situ measurement of A-Ci curves; C, Comparison of average SDs for recordings using HAPS and recordings for in situ measurement of A-Ci curves (Mean ± SD, n = 1 982); D, SD distribution of recordings using HAPS for A-Q curves measurement; E, SD distribution of recordings for in situ measurement of A-Q curves; F, Comparison of average SDs for recordings using HAPS and recordings for in situ measurement of A-Q curves (Mean ± SD, n = 1 328). There are more than 1 000 records for each distribution shown in panel A, B, D and E. **** means P-value < 10-7.
Fig. 6. Typical indoor photosynthetic carbon dioxide response curves (A-Ci, left) and photosynthetic light response curves (A-Q, right) measured before 17:00 pm and after 17:00 pm using high-efficiency all-weather photosynthetic measurement systems.PPFD, Phtosynthetically active photon flux density.
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