Abstract
Pot experiments were conducted to investigate the changes of chlorophyll content,net photosynthetic rate(Pn),N content,soluble protein(SB)content,catalase(CAT)activity,peroxidase(POD)activity and malondialdehyde(MDA)content among Yangdao 6,Nongken 57 and Nipponbare in flowering stage,grain filling stage and maturing stage.We found that the flag leaves of Yangdao 6 could stay green longer and maintain higher at Pn and soluble protein content.Furthermore,N content in Yangdao 6 flag leaves was 16% and 25% higher than Nipponbare and Nongken 57 in filling stage.Percentage of nitrogen translocation(PNT)remained relatively stable in Yangdao 6.Besides,CAT and POD activity in flag leaves of Yangdao 6 decreased more slowly,which resulted in a slower senescence compared with Nongken 57 and Nipponbare.By contrast,senescence happened earlier in the flag leaves of Nongken 57 and Nipponbare,which contented with lower Pn as well as more quickly decreasing in CAT and POD activity.PNT in Nongken 57 and Nipponbare dropped more quickly from 34% and 35% in grain filling stage to 16% and 19% in maturing stage,respectively.The results suggested that the delayed senescence in Yangdao 6 meaves could contribute more carbon and nitrogen sources to the seed filling and played a significant role at enhancing N use efficiency in rice plants.
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Claims 12
Claim · model-written summary
Yangdao 6 flag leaves remained green longer.
- Taxon
- rice
Oryza sativat0 - Material
- Yangdao 6e0
- Organ / stage
- flag leavese0
- Outcome
- stay green longere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the flag leaves of Yangdao 6 could stay green longer”
t0“rice cultivars”
Claim · model-written summary
Yangdao 6 maintained higher net photosynthetic rate and soluble protein content.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Outcome
- Pn and soluble protein contente0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yangdao 6 could stay green longer and maintain higher at Pn and soluble protein content”
t0“rice cultivars”
Claim · model-written summary
Yangdao 6 flag-leaf nitrogen content was 16% higher than Nipponbare at filling.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Organ / stage
- flag leavese0
- Outcome
- N contente0
- Direction
- highere0
- Value
- 16%e0
- Qualifier
- filling stagee0
- Comparator
- Nipponbaree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N content in Yangdao 6 flag leaves was 16% and 25% higher than Nipponbare and Nongken 57 in filling stage”
t0“rice cultivars”
Claim · model-written summary
Yangdao 6 flag-leaf nitrogen content was 25% higher than Nongken 57 at filling.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Organ / stage
- flag leavese0
- Outcome
- N contente0
- Direction
- highere0
- Value
- 25%e0
- Qualifier
- filling stagee0
- Comparator
- Nongken 57e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N content in Yangdao 6 flag leaves was 16% and 25% higher than Nipponbare and Nongken 57 in filling stage”
t0“rice cultivars”
Claim · model-written summary
Percentage of nitrogen translocation remained relatively stable in Yangdao 6.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Outcome
- Percentage of nitrogen translocatione0
- Direction
- remained relatively stablee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage of nitrogen translocation(PNT)remained relatively stable in Yangdao 6”
t0“rice cultivars”
Claim · model-written summary
CAT and POD activity declined more slowly in Yangdao 6 flag leaves.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Organ / stage
- flag leavese0
- Gene
- CAT and PODe0
- Outcome
- CAT and POD activitye0
- Direction
- decreased more slowlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT and POD activity in flag leaves of Yangdao 6 decreased more slowly”
t0“rice cultivars”
Claim · model-written summary
Slower CAT and POD decline was linked by the authors to slower senescence in Yangdao 6.
- Taxon
- riceOryza sativat0
- Material
- Yangdao 6e0
- Gene
- CAT and PODe0
- Outcome
- slower senescencee0
- Comparator
- Nongken 57 and Nipponbaree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CAT and POD activity in flag leaves of Yangdao 6 decreased more slowly,which resulted in a slower senescence compared with Nongken 57 and Nipponbare”
t0“rice cultivars”
Claim · model-written summary
Nongken 57 and Nipponbare flag leaves senesced earlier and had lower photosynthetic rate.
- Taxon
- riceOryza sativat0
- Material
- Nongken 57 and Nipponbaree0
- Organ / stage
- flag leavese0
- Outcome
- senescence happened earliere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“senescence happened earlier in the flag leaves of Nongken 57 and Nipponbare,which contented with lower Pn”
t0“rice cultivars”
Claim · model-written summary
CAT and POD activity declined more quickly in Nongken 57 and Nipponbare flag leaves.
- Taxon
- riceOryza sativat0
- Material
- Nongken 57 and Nipponbaree0
- Gene
- CAT and PODe0
- Outcome
- CAT and POD activitye0
- Direction
- more quickly decreasinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nongken 57 and Nipponbare,which contented with lower Pn as well as more quickly decreasing in CAT and POD activity”
t0“rice cultivars”
Claim · model-written summary
Nitrogen translocation in Nongken 57 dropped from 34% at grain filling to 16% at maturity.
- Taxon
- riceOryza sativat0
- Material
- Nongken 57e0
- Outcome
- PNTe0
- Direction
- droppede0
- Value
- 16%e0
- Qualifier
- 34% and 35% in grain filling stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PNT in Nongken 57 and Nipponbare dropped more quickly from 34% and 35% in grain filling stage to 16% and 19% in maturing stage,respectively”
t0“rice cultivars”
Claim · model-written summary
Nitrogen translocation in Nipponbare dropped from 35% at grain filling to 19% at maturity.
- Taxon
- riceOryza sativat0
- Material
- Nipponbaree0
- Outcome
- PNTe0
- Direction
- droppede0
- Value
- 19%e0
- Qualifier
- maturing stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PNT in Nongken 57 and Nipponbare dropped more quickly from 34% and 35% in grain filling stage to 16% and 19% in maturing stage,respectively”
t0“rice cultivars”
Claim · model-written summary
Authors infer delayed senescence in Yangdao 6 contributed carbon and nitrogen to seed filling and nitrogen use efficiency.
- Taxon
- riceOryza sativae0
- Material
- Yangdao 6e0
- Outcome
- enhancing N use efficiencye0
- Qualifier
- delayed senescencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“delayed senescence in Yangdao 6 meaves could contribute more carbon and nitrogen sources to the seed filling and played a significant role at enhancing N use efficiency in rice plants”