Abstract
Effect of two different levels of soil N-fertilizer on plant growth, leaf senescence and grain yield of erect-panicle and curved-panicle rice varieties were studied under field conditions. The results revealed that diameter in stem base and panicle neck and leaf characters of two rice varieties were better in high-N level than in low-N one. Application of N-fertilizer could inceas chlorophyll content of flag leaf, prolong its relative steady phase (RSP) of chlorophyll content and keep higher leaf area during grain-filling stage. Also there were higher total-N content of flag leaf and longer photosynthetic active duration. Eventually it increased plant dry matter accumulation and grain yield. Under the same N-level, diameter in stem base and panicle neck, activity of flag leaf, grain filling rate, 1000-grain weight, biomass and grain yield were basically better in erect-panicle variety than that in curved one.
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Claims 10
Claim · model-written summary
High N level gave better stem base diameter, panicle neck diameter and leaf characters than low N in rice varieties.
- Taxon
- rice
Oryza sativat0 - Treatment
- high-N levele1
- Outcome
- diameter in stem base and panicle neck and leaf characterse1
- Direction
- bettere1
- Comparator
- low-N onee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e1“The results revealed that diameter in stem base and panicle neck and leaf characters of two rice varieties were better in high-N level than in low-N one”
Claim · model-written summary
Application of N-fertilizer could increase chlorophyll content of flag leaf.
- Taxon
- riceOryza sativat0
- Treatment
- Application of N-fertilizere2
- Outcome
- chlorophyll content of flag leafe2
- Direction
- incease2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e2“Application of N-fertilizer could inceas chlorophyll content of flag leaf, prolong its relative steady phase (RSP) of chlorophyll content and keep higher leaf area during grain-filling stage”
Claim · model-written summary
Application of N-fertilizer prolonged the relative steady phase of chlorophyll content.
- Taxon
- riceOryza sativat0
- Treatment
- Application of N-fertilizere2
- Outcome
- relative steady phase (RSP) of chlorophyll contente2
- Direction
- prolonge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e2“Application of N-fertilizer could inceas chlorophyll content of flag leaf, prolong its relative steady phase (RSP) of chlorophyll content and keep higher leaf area during grain-filling stage”
Claim · model-written summary
Application of N-fertilizer kept higher leaf area during grain filling.
- Taxon
- riceOryza sativat0
- Organ / stage
- grain-filling stagee2
- Treatment
- Application of N-fertilizere2
- Outcome
- leaf areae2
- Direction
- highere2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e2“Application of N-fertilizer could inceas chlorophyll content of flag leaf, prolong its relative steady phase (RSP) of chlorophyll content and keep higher leaf area during grain-filling stage”
Claim · model-written summary
Rice had higher total-N content of flag leaf.
- Taxon
- riceOryza sativat0
- Organ / stage
- flag leafe3
- Outcome
- total-N contente3
- Direction
- highere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e3“there were higher total-N content of flag leaf”
Claim · model-written summary
Rice had longer photosynthetic active duration.
- Taxon
- riceOryza sativat0
- Outcome
- photosynthetic active duratione3
- Direction
- longere3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e3“and longer photosynthetic active duration”
Claim · model-written summary
N-fertilizer increased plant dry matter accumulation and grain yield.
- Taxon
- riceOryza sativat0
- Outcome
- plant dry matter accumulation and grain yielde4
- Direction
- increasede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e4“Eventually it increased plant dry matter accumulation and grain yield”
Claim · model-written summary
Under the same N-level, erect-panicle variety had better stem base and panicle neck diameter and flag leaf activity than curved-panicle variety.
- Taxon
- riceOryza sativat0
- Material
- erect-panicle varietye5
- Outcome
- diameter in stem base and panicle neck, activity of flag leafe5
- Direction
- bettere5
- Qualifier
- same N-levele5
- Comparator
- curved onee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e5“Under the same N-level, diameter in stem base and panicle neck, activity of flag leaf, grain filling rate, 1000-grain weight, biomass and grain yield were basically better in erect-panicle variety than that in curved one”
Claim · model-written summary
Under the same N-level, erect-panicle variety had better grain filling rate, 1000-grain weight and biomass than curved-panicle variety.
- Taxon
- riceOryza sativat0
- Material
- erect-panicle varietye5
- Outcome
- grain filling rate, 1000-grain weight, biomasse5
- Direction
- bettere5
- Qualifier
- same N-levele5
- Comparator
- curved onee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e5“Under the same N-level, diameter in stem base and panicle neck, activity of flag leaf, grain filling rate, 1000-grain weight, biomass and grain yield were basically better in erect-panicle variety than that in curved one”
Claim · model-written summary
Under the same N-level, erect-panicle variety had better grain yield than curved-panicle variety.
- Taxon
- riceOryza sativat0
- Material
- erect-panicle varietye5
- Outcome
- grain yielde5
- Direction
- bettere5
- Qualifier
- same N-levele5
- Comparator
- curved onee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e5“Under the same N-level, diameter in stem base and panicle neck, activity of flag leaf, grain filling rate, 1000-grain weight, biomass and grain yield were basically better in erect-panicle variety than that in curved one”
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