Abstract
Plant nitrogen(N) nutrition is important for plant metabohsms and its resistance to plant diseases.Two rice varieties with different resistance to rice blast,Huangkenuo(HKN) and Hexi-41 (HX41),were used to investigate the effect of nitrogen fertilizer rates on the changes of phenol and flavonoid content in Huangkenuo rice plant and on its rela- tionship to rice blast occurrence under rice monocropping and intereropping system.Results showed that high nitrogen level (N 300 kg/ha) reduced the biomass,yield,phenol and flavonoid contents in rice leaves,but increased the rice blast severity index,especially in monocropping Huangkenuo.Under rice intercropping treatment,high nitrogen rate had no significant effect on the yield and phenol content.However,the reduction of flavonoid content and increase of rice blast incidence was not as significant as in rice with the monocropping treatment.Under low nitrogen level,Hexi-41 and Huangkenuo intereropping increased the biomass,yield, severity of rice blast.Results also suggested that negative in leaves,and the rice blast incidence. phenol and flavonoid content and decreased the occurrence and correlation existed between the contents of phenol and flavonoid
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Claims 9
Claim · model-written summary
High nitrogen reduced rice biomass.
- Taxon
- rice
Oryza sativat0 - Treatment
- high nitrogen level (N 300 kg/ha)e0
- Outcome
- biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen level (N 300 kg/ha) reduced the biomass,yield,phenol and flavonoid contents in rice leaves”
t0“rice”
Claim · model-written summary
High nitrogen reduced rice yield.
- Taxon
- riceOryza sativat0
- Treatment
- high nitrogen level (N 300 kg/ha)e0
- Outcome
- yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen level (N 300 kg/ha) reduced the biomass,yield,phenol and flavonoid contents in rice leaves”
t0“rice”
Claim · model-written summary
High nitrogen reduced leaf phenol and flavonoid contents in rice.
- Taxon
- riceOryza sativat0
- Organ / stage
- rice leavese0
- Treatment
- high nitrogen level (N 300 kg/ha)e0
- Outcome
- phenol and flavonoid contents in rice leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high nitrogen level (N 300 kg/ha) reduced the biomass,yield,phenol and flavonoid contents in rice leaves”
t0“rice”
Claim · model-written summary
High nitrogen increased rice blast severity, especially in monocropped Huangkenuo.
- Taxon
- riceOryza sativat0
- Material
- Huangkenuoe0
- Treatment
- high nitrogen level (N 300 kg/ha)e1
- Outcome
- rice blast severity indexe0
- Direction
- increasede0
- Qualifier
- especially in monocropping Huangkenuoe0
Not reportedInteractorComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased the rice blast severity index,especially in monocropping Huangkenuo”
e1“high nitrogen level (N 300 kg/ha)”
t0“rice”
Claim · model-written summary
Under intercropping, high nitrogen had no significant effect on rice yield or phenol content.
- Taxon
- riceOryza sativat0
- Treatment
- high nitrogen ratee0
- Outcome
- yield and phenol contente0
- Direction
- no significant effecte0
- Qualifier
- rice intercropping treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under rice intercropping treatment,high nitrogen rate had no significant effect on the yield and phenol content”
t0“rice”
Claim · model-written summary
Under intercropping, high nitrogen reduced flavonoid content less markedly than under monocropping.
- Taxon
- riceOryza sativat0
- Treatment
- high nitrogen ratee1
- Outcome
- flavonoid contente0
- Direction
- reductione0
- Comparator
- monocropping treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction of flavonoid content and increase of rice blast incidence was not as significant as in rice with the monocropping treatment”
e1“Under rice intercropping treatment,high nitrogen rate”
t0“rice”
Claim · model-written summary
Under intercropping, high nitrogen increased rice blast incidence less markedly than under monocropping.
- Taxon
- riceOryza sativat0
- Treatment
- high nitrogen ratee1
- Outcome
- rice blast incidencee0
- Direction
- increasee0
- Comparator
- monocropping treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the reduction of flavonoid content and increase of rice blast incidence was not as significant as in rice with the monocropping treatment”
e1“Under rice intercropping treatment,high nitrogen rate”
t0“rice”
Claim · model-written summary
At low nitrogen, intercropping Hexi-41 and Huangkenuo increased biomass and yield.
- Taxon
- riceOryza sativat0
- Treatment
- Hexi-41 and Huangkenuo intereroppinge0
- Outcome
- biomass,yielde0
- Direction
- increasede0
- Qualifier
- Under low nitrogen levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low nitrogen level,Hexi-41 and Huangkenuo intereropping increased the biomass,yield, severity of rice blast”
t0“rice”
Claim · model-written summary
At low nitrogen, intercropping Hexi-41 and Huangkenuo was reported to increase rice blast severity.
- Taxon
- riceOryza sativat0
- Treatment
- Hexi-41 and Huangkenuo intereroppinge0
- Outcome
- severity of rice blaste0
- Direction
- increasede0
- Qualifier
- Under low nitrogen levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under low nitrogen level,Hexi-41 and Huangkenuo intereropping increased the biomass,yield, severity of rice blast”
t0“rice”
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