Abstract
Whole and splitting rootbox system and quartz sand culture were conducted to study the effects of location and level of nitrogen on the allocation of carbohydrate represented by dry matter and parameters of rice root architecture.Results showed that the amount and location of nitrogen supply have affected significantly on allocation of the dry matter between up ground part and under ground one and on parameters of rice root architecture such as root length,root surface area,root volume as well as on root distribution.Biomass of up ground parts of the crop increased with increase of nitrogen fertilization under the condition of whole root supplied nitrogen.Moderate amount of nitrogen fertilization would promote root growth,whereas excessive nitrogen could block root growth.Under condition of half roots supplied with nitrogen,both moderate and high rate of nitrogen would induce root growth and development.Lateral root length,root surface area,root volume were increased by 9% to 91%,20.1% to 87.9% and 32.4% to 88.0% respectively.However,root diameter decreased in the part of nitrogen treatment.The increase of lateral root length,root surface area,root volume could be attributed to the increase of biomass at the moderate nitrogen supply,nevertheless the increase of these parameters was not only related to increase of biomass,but also contributed directly to lateral root length and root surface area per biomass under high rate of nitrogen.It could be concluded that the change of the root length,surface area and volume is one of the adaptive mechanism of rice to nitrogen fertilizer.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Nitrogen amount and location significantly affected rice dry matter allocation and root architecture.
- Taxon
- rice
Oryza sativat0 - Treatment
- amount and location of nitrogen supplye0
- Outcome
- allocation of the dry mattere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the amount and location of nitrogen supply have affected significantly on allocation of the dry matter between up ground part and under ground one and on parameters of rice root architecture such as root length,root surface area,root volume as well as on root distribution.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Aboveground rice biomass increased with nitrogen fertilization when the whole root received nitrogen.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogen fertilizatione0
- Outcome
- Biomass of up ground partse0
- Direction
- increasede0
- Qualifier
- whole root supplied nitrogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass of up ground parts of the crop increased with increase of nitrogen fertilization under the condition of whole root supplied nitrogen.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Moderate nitrogen promoted rice root growth.
- Taxon
- riceOryza sativat0
- Treatment
- Moderate amount of nitrogen fertilizatione0
- Outcome
- root growthe0
- Direction
- promotee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate amount of nitrogen fertilization would promote root growth”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Excessive nitrogen inhibited rice root growth.
- Taxon
- riceOryza sativat0
- Treatment
- excessive nitrogene0
- Outcome
- root growthe0
- Direction
- blocke0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excessive nitrogen could block root growth.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Moderate and high nitrogen supplied to half the roots induced rice root growth and development.
- Taxon
- riceOryza sativat0
- Treatment
- moderate and high rate of nitrogene0
- Outcome
- root growth and developmente0
- Direction
- inducee0
- Qualifier
- half roots supplied with nitrogene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under condition of half roots supplied with nitrogen,both moderate and high rate of nitrogen would induce root growth and development.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Lateral root length increased by 9% to 91%.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogent0
- Outcome
- Lateral root lengthe0
- Direction
- increasede0
- Value
- 9% to 91%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral root length,root surface area,root volume were increased by 9% to 91%,20.1% to 87.9% and 32.4% to 88.0% respectively.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Root surface area increased by 20.1% to 87.9%.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogent0
- Outcome
- root surface areae0
- Direction
- increasede0
- Value
- 20.1% to 87.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral root length,root surface area,root volume were increased by 9% to 91%,20.1% to 87.9% and 32.4% to 88.0% respectively.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Root volume increased by 32.4% to 88.0%.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogent0
- Outcome
- root volumee0
- Direction
- increasede0
- Value
- 32.4% to 88.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lateral root length,root surface area,root volume were increased by 9% to 91%,20.1% to 87.9% and 32.4% to 88.0% respectively.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
Root diameter decreased in the nitrogen-treated portion.
- Taxon
- riceOryza sativat0
- Treatment
- nitrogen treatmente0
- Outcome
- root diametere0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However,root diameter decreased in the part of nitrogen treatment.”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
At moderate nitrogen supply, greater root length, area and volume were attributed to increased biomass.
- Taxon
- riceOryza sativat0
- Treatment
- moderate nitrogen supplye0
- Outcome
- lateral root length,root surface area,root volumee0
- Qualifier
- increase of biomasse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increase of lateral root length,root surface area,root volume could be attributed to the increase of biomass at the moderate nitrogen supply”
t0“Growth and adaptive changes of rice (Oryza sativa L.) root architecture in response to nitrogen supply”
Claim · model-written summary
At high nitrogen supply, increased root architecture measures were also attributed to greater lateral root length and surface area per biomass.
- Taxon
- riceOryza sativae0
- Treatment
- high rate of nitrogene0
- Outcome
- root length,surface area and volumee0
- Qualifier
- adaptive mechanisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under high rate of nitrogen.It could be concluded that the change of the root length,surface area and volume is one of the adaptive mechanism of rice to nitrogen fertilizer.”
The same questions in other papers
nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
507 papers more in this group
See all 511 papers →fertilization · growth · Oryza sativa (rice)Positive and negative results
669 papers in the same direction as this paper · 81 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
755 papers more in this group
See all 759 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.