Abstract
SUMMARY We studied the impacts of free-air CO2 enrichment (FACE), and the interaction with nitrogen (N) fertilization, on the photosynthetic capacity of the flag leaf, above-ground dry matter production and grain yield of rice (Oryza sativa L.). Plant were exposed to ambient or elevated [CO2] (ambient + 200 μmol mol−1) and 4, 9 or 15 g N mr 2 . We found no evidence of down-regulation of the photosynthetic capacity of the flag leaf in FACE. Although a reduction in N fertilization reduced the content of nitrogen and photosynthetic pigments, this hardly affected the photosynthetic capacity of the flag leaf. Both FACE and N enrichment stimulated the above-ground dry matter production and grain yield, however, the stimulation of grain yield by FACE was not significant at low N supply.
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Claims 6
Claim · model-written summary
FACE showed no evidence of flag-leaf photosynthetic-capacity down-regulation.
- Taxon
- Rice (Oryza sativaL.)
Oryza sativat0 - Treatment
- FACEe0
- Outcome
- photosynthetic capacity of the flag leafe0
- Direction
- no evidence of down-regulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We found no evidence of down-regulation of the photosynthetic capacity of the flag leaf in FACE.”
t0“Rice (Oryza sativaL.)”
Claim · model-written summary
Reduced nitrogen fertilization reduced nitrogen content and photosynthetic pigment content.
- Taxon
- Rice (Oryza sativaL.)Oryza sativat0
- Treatment
- reduction in N fertilizatione0
- Outcome
- content of nitrogen and photosynthetic pigmentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a reduction in N fertilization reduced the content of nitrogen and photosynthetic pigments”
t0“Rice (Oryza sativaL.)”
Claim · model-written summary
Reduced nitrogen fertilization hardly affected flag-leaf photosynthetic capacity.
- Taxon
- Rice (Oryza sativaL.)Oryza sativat0
- Treatment
- reduction in N fertilizatione0
- Outcome
- photosynthetic capacity of the flag leafe0
- Direction
- hardly affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although a reduction in N fertilization reduced the content of nitrogen and photosynthetic pigments, this hardly affected the photosynthetic capacity of the flag leaf.”
t0“Rice (Oryza sativaL.)”
Claim · model-written summary
FACE stimulated above-ground dry matter production and grain yield.
- Taxon
- Rice (Oryza sativaL.)Oryza sativat0
- Treatment
- FACEe0
- Outcome
- above-ground dry matter production and grain yielde0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both FACE and N enrichment stimulated the above-ground dry matter production and grain yield”
t0“Rice (Oryza sativaL.)”
Claim · model-written summary
Nitrogen enrichment stimulated above-ground dry matter production and grain yield.
- Taxon
- Rice (Oryza sativaL.)Oryza sativat0
- Treatment
- N enrichmente0
- Outcome
- above-ground dry matter production and grain yielde0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both FACE and N enrichment stimulated the above-ground dry matter production and grain yield”
t0“Rice (Oryza sativaL.)”
Claim · model-written summary
At low nitrogen supply, FACE grain-yield stimulation was not significant.
- Taxon
- Rice (Oryza sativaL.)Oryza sativat0
- Treatment
- FACEe0
- Outcome
- grain yielde0
- Direction
- stimulatione0
- Qualifier
- low N supplye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the stimulation of grain yield by FACE was not significant at low N supply.”
t0“Rice (Oryza sativaL.)”
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