Abstract
【Objective】The objective of this study was to investigate the effect of low irradiance on the photosynthetic characteristics and chlorophyll fluorescence parameters and to provide a useful study for peach tree breeding,which could tolerate low light stress and be cultivated in a protected culture.【Method】A two-year-old shaded Chunjie peach tree was used to investigate the photosynthetic characteristics and chlorophyll fluorescence parameters in different irradiance.This was done using a Ciras-1 photosynthesis system and FMS-Ⅱc hlorophyll fluorescence system in protected culture.【Result】Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.Rubisco activities reached 0.193 μmol NADH.ml-1.min-1,0.157 μmol NADH.ml-1.min-1,0.137 μmol NADH.ml-1.min-1 in the three irradiances.Photorespiration reduced from 3.7 μmol.m-2.s-1 to 1.8 μmol.m-2.s-1 and 1.1 μmol.m-2.s-1 in three irradiance,which the difference between the three treatment was significant(P=0.05).The diurnal change of φPSⅡ,Fv/Fm stabilized and had higher value,while the control fluctuated sharply and exhibited single valley curve.The diurnal change of Fo rose from 10:00 and reached the maximum at 13:00,The difference between the three treatments was significant(P=0.05).【Conclusion】Responses of the activity of Rubisco,net photosynthesis,the concerned parameters and content of photosynthesis pigments under low irradiance could be used to judge the capacity of low-irradiance-tolerance of peach trees.
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Claims 10
Claim · model-written summary
Light compensation point decreased as irradiance decreased.
- Taxon
- Peach Trees
Prunus persicat0 - Treatment
- reduction of irradiancee0
- Outcome
- Light compensation point(LCP)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.”
t0“Peach Trees”
Claim · model-written summary
Light saturation point decreased as irradiance decreased.
- Taxon
- Peach TreesPrunus persicat0
- Treatment
- reduction of irradiancee0
- Outcome
- light saturation point(LSP)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.”
t0“Peach Trees”
Claim · model-written summary
CO2 saturation point decreased as irradiance decreased.
- Taxon
- Peach TreesPrunus persicat0
- Treatment
- reduction of irradiancee0
- Outcome
- CO2 saturation point(CSP)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.”
t0“Peach Trees”
Claim · model-written summary
CO2 compensation point decreased as irradiance decreased.
- Taxon
- Peach TreesPrunus persicat0
- Treatment
- reduction of irradiancee0
- Outcome
- CO2 compensation point(CCP)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.”
t0“Peach Trees”
Claim · model-written summary
Apparent quantum yield decreased as irradiance decreased.
- Taxon
- Peach TreesPrunus persicat0
- Treatment
- reduction of irradiancee0
- Outcome
- apparent quantum yield(AQY)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light compensation point(LCP),light saturation point(LSP),CO2 saturation point(CSP),CO2 compensation point(CCP) and apparent quantum yield(AQY) reduced with the reduction of irradiance.”
t0“Peach Trees”
Claim · model-written summary
Rubisco activity was 0.193, 0.157, and 0.137 μmol NADH.ml-1.min-1 at the three irradiances, respectively.
- Taxon
- Peach TreesPrunus persicat0
- Gene
- Rubiscoe0
- Outcome
- Rubisco activitiese0
- Value
- 0.193 μmol NADH.ml-1.min-1,0.157 μmol NADH.ml-1.min-1,0.137 μmol NADH.ml-1.min-1e0
- Qualifier
- in the three irradiancese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rubisco activities reached 0.193 μmol NADH.ml-1.min-1,0.157 μmol NADH.ml-1.min-1,0.137 μmol NADH.ml-1.min-1 in the three irradiances.”
t0“Peach Trees”
Claim · model-written summary
Photorespiration declined across the three irradiances, with a significant treatment difference.
- Taxon
- Peach TreesPrunus persicat0
- Treatment
- three irradiancee0
- Outcome
- Photorespiratione0
- Direction
- reducede0
- Value
- 3.7 μmol.m-2.s-1 to 1.8 μmol.m-2.s-1 and 1.1 μmol.m-2.s-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photorespiration reduced from 3.7 μmol.m-2.s-1 to 1.8 μmol.m-2.s-1 and 1.1 μmol.m-2.s-1 in three irradiance,which the difference between the three treatment was significant(P=0.05).”
t0“Peach Trees”
Claim · model-written summary
Diurnal φPSⅡ and Fv/Fm were stable and higher, while the control fluctuated sharply with a single valley.
- Taxon
- Peach TreesPrunus persicat0
- Outcome
- φPSⅡ,Fv/Fme0
- Direction
- highere0
- Qualifier
- stabilizede0
- Comparator
- the controle0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The diurnal change of φPSⅡ,Fv/Fm stabilized and had higher value,while the control fluctuated sharply and exhibited single valley curve.”
t0“Peach Trees”
Claim · model-written summary
Diurnal Fo rose from 10:00 and peaked at 13:00, with a significant difference among treatments.
- Taxon
- Peach TreesPrunus persicat0
- Outcome
- Foe0
- Direction
- rosee0
- Qualifier
- from 10:00 and reached the maximum at 13:00e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The diurnal change of Fo rose from 10:00 and reached the maximum at 13:00,The difference between the three treatments was significant(P=0.05).”
t0“Peach Trees”
Claim · model-written summary
Rubisco activity, net photosynthesis, related parameters, and photosynthetic pigment content under low irradiance could be used to judge low irradiance tolerance of peach trees.
- Taxon
- peach treesPrunus persicae0
- Outcome
- judge the capacity of low-irradiance-tolerancee0
- Qualifier
- under low irradiancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Responses of the activity of Rubisco,net photosynthesis,the concerned parameters and content of photosynthesis pigments under low irradiance could be used to judge the capacity of low-irradiance-tolerance of peach trees.”
The same questions in other papers
light · physiology: photosynthesis · Prunus persica (peach)Positive and negative results
3 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
5 papers more in this group
See all 9 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.