Abstract
[Objective] The research aimed to study the effects of cadmium on growth,nodulation and nitrogen fixation of Medicago sativa.[Method] The pot experiment was used.[Result] The results showed that there was little effects of cadmium on aboveground biomass,height and chlorophyll content of Medicago sativa in treatments with low cadmium addition.Effects of cadmium on aboveground biomass was significant in treatment with cadmiumaddition of 10.0 mg/kg soil,and growth and chlorophyll synthesis of Medicago sativa were significantly restrained in treatment with cadmiumaddition of 50.0 mg/kg soil.The distribution of cadmium content in Medicago sativa could be sequenced as:Rootaboveground part.Cadmium content in different parts of Medicago sativa had significantly positive relation to cadmium addition in the soil(P0.01).Average fresh weight of root nodule in different pots declined along with increase of cadmium addition in treatments.Nitrogenase activity in the treatment began to be significantly restrained when cadmium of 5.0 mg/kg soil was added into the soil.[Conclusion] The study implied that Medicago sativa and N-fixing symbiosis had certain tolerance to cadmium pollution,and cadmiumof higher content in soil would induce cadmiumcontent in aboveground part of Medicago sativa exceed standard,and restrained the growth and nitrogen fixation of Medicago sativa.
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Claims 12
Claim · model-written summary
Low cadmium additions had little effect on alfalfa aboveground biomass and height.
- Taxon
- Medicago sativa
Medicago sativae0 - Treatment
- low cadmium additione0
- Outcome
- aboveground biomass,heighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was little effects of cadmium on aboveground biomass,height and chlorophyll content of Medicago sativa in treatments with low cadmium addition.”
Claim · model-written summary
Low cadmium additions had little effect on alfalfa chlorophyll content.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- low cadmium additione0
- Outcome
- chlorophyll contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was little effects of cadmium on aboveground biomass,height and chlorophyll content of Medicago sativa in treatments with low cadmium addition.”
Claim · model-written summary
Cadmium addition of 10.0 mg/kg soil significantly affected aboveground biomass, with direction unspecified.
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- cadmiumaddition of 10.0 mg/kg soile0
- Outcome
- aboveground biomasse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of cadmium on aboveground biomass was significant in treatment with cadmiumaddition of 10.0 mg/kg soil”
t0“Medicago sativa”
Claim · model-written summary
Cadmium addition of 50.0 mg/kg soil significantly restrained alfalfa growth.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- cadmiumaddition of 50.0 mg/kg soile0
- Outcome
- growthe0
- Direction
- restrainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and chlorophyll synthesis of Medicago sativa were significantly restrained in treatment with cadmiumaddition of 50.0 mg/kg soil.”
Claim · model-written summary
Cadmium addition of 50.0 mg/kg soil significantly restrained alfalfa chlorophyll synthesis.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- cadmiumaddition of 50.0 mg/kg soile0
- Outcome
- chlorophyll synthesise0
- Direction
- restrainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth and chlorophyll synthesis of Medicago sativa were significantly restrained in treatment with cadmiumaddition of 50.0 mg/kg soil.”
Claim · model-written summary
Cadmium content was greater in alfalfa roots than aboveground parts.
- Taxon
- Medicago sativaMedicago sativae0
- Organ / stage
- Rootaboveground parte0
- Outcome
- cadmium contente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The distribution of cadmium content in Medicago sativa could be sequenced as:Rootaboveground part.”
Claim · model-written summary
Cadmium content in alfalfa parts was positively related to cadmium added to soil.
- Taxon
- Medicago sativaMedicago sativae0
- Treatment
- cadmium addition in the soile0
- Outcome
- Cadmium content in different partse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cadmium content in different parts of Medicago sativa had significantly positive relation to cadmium addition in the soil(P0.01).”
Claim · model-written summary
Average fresh root nodule weight declined as cadmium addition increased.
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- cadmium additione0
- Outcome
- Average fresh weight of root nodulee0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average fresh weight of root nodule in different pots declined along with increase of cadmium addition in treatments.”
t0“Medicago sativa”
Claim · model-written summary
Nitrogenase activity began to be significantly restrained at 5.0 mg/kg soil added cadmium.
- Taxon
- Medicago sativaMedicago sativat0
- Treatment
- cadmium of 5.0 mg/kg soile0
- Outcome
- Nitrogenase activitye0
- Direction
- restrainede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogenase activity in the treatment began to be significantly restrained when cadmium of 5.0 mg/kg soil was added into the soil.”
t0“Medicago sativa”
Claim · model-written summary
The authors inferred some alfalfa and nitrogen fixing symbiosis tolerance of cadmium pollution.
- Taxon
- Medicago sativaMedicago sativae0
- Outcome
- certain tolerancee0
- Qualifier
- cadmium pollutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Medicago sativa and N-fixing symbiosis had certain tolerance to cadmium pollution”
Claim · model-written summary
The authors inferred that high soil cadmium would cause aboveground alfalfa cadmium to exceed standards.
- Taxon
- Medicago sativaMedicago sativae0
- Outcome
- cadmiumcontent in aboveground part of Medicago sativa exceed standarde0
- Qualifier
- cadmiumof higher content in soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cadmiumof higher content in soil would induce cadmiumcontent in aboveground part of Medicago sativa exceed standard”
Claim · model-written summary
The authors inferred that high soil cadmium restrained alfalfa growth and nitrogen fixation.
- Taxon
- Medicago sativaMedicago sativae0
- Outcome
- growth and nitrogen fixatione0
- Qualifier
- cadmiumof higher content in soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cadmiumof higher content in soil would induce cadmiumcontent in aboveground part of Medicago sativa exceed standard,and restrained the growth and nitrogen fixation of Medicago sativa.”
The same questions in other papers
cadmium atom · physiology: pigments · Medicago sativa (alfalfa)Results differ
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →cadmium atom · growth · Medicago sativa (alfalfa)Results differ
16 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
15 papers more in this group
See all 19 papers →cadmium atom · physiology: enzyme activity · Medicago sativa (alfalfa)Results agree
1 paper in the same direction as this paper
- negative
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.