Abstract
By using aeroponics culture system, this paper studied the effects of elevated rhizosphere CO2 concentration on the leaf photosynthesis and the fruit yield and quality of muskmelon during its anthesis-fruiting period. In the fruit development period of muskmelon, as compared with those in the control (350 microL CO2 x L (-1)), the leaf chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), and the maximal photochemical efficiency of PS II (Fv/Fm) in treatments 2500 and 5000 microL CO2 x L(-1) decreased to some extents, but the stomatal limitation value (Ls) increased significantly, and the variation amplitudes were larger in treatment 5000 microL CO2 x L(-1) than in treatment 2500 microL CO2 x L(-1). Under the effects of elevated rhizosphere CO2 concentration, the fruit yield per plant and the Vc and soluble sugar contents in fruits decreased markedly, while the fruit organic acid content was in adverse. It was suggested that when the rhizosphere CO2 concentration of muskmelon during its anthesis-fruiting period reached to 2500 microL x L(-1), the leaf photosynthesis and fruit development of muskmelon would be depressed obviously, which would result in the decrease of fruit yield and quality of muskmelon.
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Claims 6
Claim · model-written summary
Elevated rhizosphere CO2 (2500 and 5000 µL/L) decreased leaf chlorophyll content, net photosynthetic rate and stomatal conductance of muskmelon to some extent relative to the control.
- Taxon
- muskmelon
.jpg?width=60)
Cucumis melot0 - Treatment
- treatments 2500 and 5000 microL CO2 x L(-1)e1
- Outcome
- leaf chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs)e1
- Direction
- decreased to some extentse1
- Comparator
- the control (350 microL CO2 x L (-1))e1
- Setting
- aeroponics culture systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“muskmelon”
e0“By using aeroponics culture system”
e1“as compared with those in the control (350 microL CO2 x L (-1)), the leaf chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), and the maximal photochemical efficiency of PS II (Fv/Fm) in treatments 2500 and 5000 microL CO2 x L(-1) decreased to some extents”
Claim · model-written summary
Elevated rhizosphere CO2 decreased intercellular CO2 concentration and the maximal photochemical efficiency of PS II of muskmelon to some extent.
- Taxon
- muskmelonCucumis melot0
- Treatment
- treatments 2500 and 5000 microL CO2 x L(-1)e1
- Outcome
- intercellular CO2 concentration (Ci), and the maximal photochemical efficiency of PS II (Fv/Fm)e1
- Direction
- decreased to some extentse1
- Comparator
- the control (350 microL CO2 x L (-1))e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“as compared with those in the control (350 microL CO2 x L (-1)), the leaf chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), and the maximal photochemical efficiency of PS II (Fv/Fm) in treatments 2500 and 5000 microL CO2 x L(-1) decreased to some extents”
Claim · model-written summary
Elevated rhizosphere CO2 significantly increased the stomatal limitation value (Ls) of muskmelon.
- Taxon
- muskmelonCucumis melot0
- Treatment
- treatments 2500 and 5000 microL CO2 x L(-1)e1
- Outcome
- stomatal limitation value (Ls)e2
- Direction
- increasede2
- Comparator
- the control (350 microL CO2 x L (-1))e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e1“as compared with those in the control (350 microL CO2 x L (-1)), the leaf chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), and the maximal photochemical efficiency of PS II (Fv/Fm) in treatments 2500 and 5000 microL CO2 x L(-1) decreased to some extents”
e2“but the stomatal limitation value (Ls) increased significantly”
Claim · model-written summary
The variation amplitudes of the measured responses were larger at 5000 than at 2500 µL/L elevated rhizosphere CO2.
- Taxon
- muskmelonCucumis melot0
- Treatment
- treatment 5000 microL CO2 x L(-1)e5
- Outcome
- variation amplitudese5
- Direction
- largere5
- Comparator
- treatment 2500 microL CO2 x L(-1)e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e5“the variation amplitudes were larger in treatment 5000 microL CO2 x L(-1) than in treatment 2500 microL CO2 x L(-1)”
Claim · model-written summary
Elevated rhizosphere CO2 decreased fruit yield per plant and the Vc and soluble sugar contents of muskmelon fruits markedly.
- Taxon
- muskmelonCucumis melot0
- Treatment
- elevated rhizosphere CO2 concentratione3
- Outcome
- fruit yield per plant and the Vc and soluble sugar contents in fruitse3
- Direction
- decreased markedlye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e3“Under the effects of elevated rhizosphere CO2 concentration, the fruit yield per plant and the Vc and soluble sugar contents in fruits decreased markedly”
Claim · model-written summary
Under elevated rhizosphere CO2, the fruit organic acid content of muskmelon changed in the opposite (adverse) direction.
- Taxon
- muskmelonCucumis melot0
- Treatment
- elevated rhizosphere CO2 concentratione3
- Outcome
- fruit organic acid contente4
- Direction
- in adversee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“muskmelon”
e3“Under the effects of elevated rhizosphere CO2 concentration, the fruit yield per plant and the Vc and soluble sugar contents in fruits decreased markedly”
e4“while the fruit organic acid content was in adverse”
The same questions in other papers
co2 · physiology: osmolytes · Cucumis melo (muskmelon)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
co2 · physiology: photosynthesis · Cucumis melo (muskmelon)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
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.