Abstract
The effects of N fertilizer rates on some physiological characteristics of ratoon rice were studied. The results showed that the activity of nitrate reductase (NR), chlorophyll contents and net photosynthetic rate in the leaves of ratoon rice increased as nitrogen application rate (57. 5 - 287. 5 kg · hm-2) was enhanced. The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes , thereby reduced menbrane detriment by active oxygen species produced in the process of senescence, consequently, protected photosynthetic function of green leaves in rice and enhanced root activity, in turn delayed senescence and increased yield.
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Claims 6
Claim · model-written summary
Nitrate reductase activity, chlorophyll content, and net photosynthesis increased with nitrogen application rate.
- Taxon
- ratoon ricee0
- Organ / stage
- leavese0
- Treatment
- nitrogen application rate (57. 5 - 287. 5 kg · hm-2)e0
- Outcome
- activity of nitrate reductase (NR), chlorophyll contents and net photosynthetic ratee0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The results showed that the activity of nitrate reductase (NR), chlorophyll contents and net photosynthetic rate in the leaves of ratoon rice increased as nitrogen application rate (57. 5 - 287. 5 kg · hm-2) was enhanced.”
Claim · model-written summary
The optimum nitrogen rate increased cell defense enzyme activities.
- Taxon
- ratoon ricet0
- Treatment
- optimum nitrogen application ratee0
- Outcome
- activities of cell defense enzymese0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes”
t0“ratoon rice”
Claim · model-written summary
The optimum nitrogen rate reduced membrane detriment from active oxygen species.
- Taxon
- ratoon ricet0
- Treatment
- optimum nitrogen application ratee0
- Outcome
- menbrane detrimente0
- Direction
- reducede0
- Qualifier
- by active oxygen speciese0
Not reportedComparator
Verbatim
e0“The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes , thereby reduced menbrane detriment by active oxygen species”
t0“ratoon rice”
Claim · model-written summary
The optimum nitrogen rate protected photosynthetic function of green rice leaves.
- Taxon
- rice
Oryza sativae0 - Treatment
- optimum nitrogen application ratee0
- Outcome
- photosynthetic function of green leavese0
- Direction
- protectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes , thereby reduced menbrane detriment by active oxygen species produced in the process of senescence, consequently, protected photosynthetic function of green leaves in rice”
Claim · model-written summary
The optimum nitrogen rate enhanced root activity.
- Taxon
- riceOryza sativae0
- Treatment
- optimum nitrogen application ratee0
- Outcome
- root activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes , thereby reduced menbrane detriment by active oxygen species produced in the process of senescence, consequently, protected photosynthetic function of green leaves in rice and enhanced root activity”
Claim · model-written summary
The optimum nitrogen rate delayed senescence and increased yield.
- Taxon
- riceOryza sativae0
- Treatment
- optimum nitrogen application ratee0
- Outcome
- senescence and increased yielde0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biochemical analysis indicated that the optimum nitrogen application rate also increased the activities of cell defense enzymes , thereby reduced menbrane detriment by active oxygen species produced in the process of senescence, consequently, protected photosynthetic function of green leaves in rice and enhanced root activity, in turn delayed senescence and increased yield.”
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