Abstract
The effect of SO42-in a simulated acid rain on growth and quality of rapeseeds was studied in rapeseed field.The result showed that plant height and leaf area of the rapeseed increased when pH4.0,with the peak value appearing in pH5.0.The plant height and leaf area decreased sharply when the pH value of simulated acid rain getting lower.The concentration of chlorophyll notably decreased with the lower pH value,with 59.06% in average.Chlorophyll-a had a positive correlation with pH value of acid rain and was more likely to be influenced by the acid rain than the chlorophyll-b,especially when pH3.0.Yield increases when pH4.0 which may attribute to the SO42-supply and decrease under intensive stress of the acid rain.However,the simulated acid rain seemed have less effect on the thousand grain weight.Under the effect of the acid rain,the concentration of crude lipid,crude protein,soluble saccharide and reductive saccharide decreased significantly with lower pH value,especially when pH3.0.However,the concentration of soluble amino acid under different treatment had a notable increase,but showed no linear correlation with the pH and SO42-variation in the simulated acid rain.The total acidity had a 2-stage linear correlation with the pH value.The pH 3.0 of the acid rain can be considered as a threshold,and below which the growth would be restrained and quality of the seeds would be undermined.
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Claims 13
Claim · model-written summary
Rapeseed plant height and leaf area increased at pH4.0 and peaked at pH5.0.
- Taxon
- rapeseede0
- Treatment
- pH4.0e0
- Outcome
- plant height and leaf areae0
- Direction
- increasede0
- Qualifier
- pH5.0e0
Not reportedComparator
Verbatim
e0“plant height and leaf area of the rapeseed increased when pH4.0,with the peak value appearing in pH5.0”
Claim · model-written summary
Rapeseed plant height and leaf area decreased sharply as simulated acid rain pH fell.
- Taxon
- rapeseedt0
- Treatment
- simulated acid raine0
- Outcome
- plant height and leaf areae0
- Direction
- decreased sharplye0
Not reportedComparator
Verbatim
e0“plant height and leaf area decreased sharply when the pH value of simulated acid rain getting lower”
t0“rapeseed”
Claim · model-written summary
Chlorophyll concentration decreased by 59.06% on average with lower pH.
Verbatim
e0“The concentration of chlorophyll notably decreased with the lower pH value,with 59.06% in average”
t0“rapeseed”
Claim · model-written summary
Chlorophyll-a correlated positively with acid rain pH and was more affected than chlorophyll-b, especially at pH3.0.
Verbatim
e0“Chlorophyll-a had a positive correlation with pH value of acid rain and was more likely to be influenced by the acid rain than the chlorophyll-b,especially when pH3.0”
t0“rapeseed”
Claim · model-written summary
Rapeseed yield increased at pH4.0.
Not reportedComparator
Verbatim
e0“Yield increases when pH4.0”
t0“rapeseed”
Claim · model-written summary
Rapeseed yield decreased under intense acid rain stress.
Not reportedComparator
Verbatim
e0“decrease under intensive stress of the acid rain”
e1“Yield increases when pH4.0”
t0“rapeseed”
Claim · model-written summary
Simulated acid rain had little effect on thousand grain weight.
Not reportedComparator
Verbatim
e0“simulated acid rain seemed have less effect on the thousand grain weight”
t0“rapeseed”
Claim · model-written summary
Crude lipid, crude protein, and soluble saccharide concentrations decreased significantly as acid rain pH fell, especially at pH3.0.
- Taxon
- rapeseedt0
- Treatment
- lower pH valuee0
- Outcome
- concentration of crude lipid,crude protein,soluble saccharidee0
- Direction
- decreasede0
- Qualifier
- pH3.0e0
Not reportedComparator
Verbatim
e0“concentration of crude lipid,crude protein,soluble saccharide and reductive saccharide decreased significantly with lower pH value,especially when pH3.0”
t0“rapeseed”
Claim · model-written summary
Reductive saccharide concentration decreased significantly as acid rain pH fell.
Not reportedComparator
Verbatim
e0“reductive saccharide decreased significantly with lower pH value,especially when pH3.0”
t0“rapeseed”
Claim · model-written summary
Soluble amino acid concentration increased notably under different acid rain treatments.
- Taxon
- rapeseedt0
- Treatment
- different treatmente0
- Outcome
- concentration of soluble amino acide0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“concentration of soluble amino acid under different treatment had a notable increase”
t0“rapeseed”
Claim · model-written summary
Soluble amino acid concentration showed no linear correlation with acid rain pH or SO42- variation.
Verbatim
e0“concentration of soluble amino acid under different treatment had a notable increase,but showed no linear correlation with the pH and SO42-variation in the simulated acid rain”
t0“rapeseed”
Claim · model-written summary
Total acidity had a two-stage linear correlation with acid rain pH.
Verbatim
e0“The total acidity had a 2-stage linear correlation with the pH value”
t0“rapeseed”
Claim · model-written summary
The authors considered acid rain pH 3.0 a threshold below which rapeseed growth and seed quality deteriorate.
Verbatim
e0“The pH 3.0 of the acid rain can be considered as a threshold,and below which the growth would be restrained and quality of the seeds would be undermined”
t0“rapeseed”
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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.