Abstract
A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao to study the effects of different kinds and concentrations of exogenous polyamines on the growth and photosynthesis of pakchio seedlings. The stress of 80 mmol / L Ca( NO3)2significantly reduced plant height,leaf number,dry and fresh weight,leaf area,root length,root volume,and root vigor,and deereased the contents of photosynthetic pigments and photosynthesis on day 10. The suppressive effects of Ca( NO3)2on pakchio seedlings could be alleviated by spraying exogenous spermine( Spm),spermidine( Spd),or putrescine( Put),with the concentrations ranging from 1. 0 to 15. 0 mmol/L Put,0. 1 to1. 5 mmol / L,or 0. 1 to 1. 0 mmol / L,respectively. 0. 5 mmol / L Spd,0. 3 mmol / L Spm,or 5. 0 mmol / L Put exhibited the strongest alleviation.
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Claims 6
Claim · model-written summary
Calcium nitrate stress at 80 mmol / L significantly reduced plant height, leaf number, and dry and fresh weight of pakchoi seedlings.
- Taxon
- pakchoie0
- Material
- Hanxiaoe0
- Treatment
- 80 mmol / L Ca( NO3)2e1
- Outcome
- plant height,leaf number,dry and fresh weighte1
- Direction
- reducede1
- Setting
- hydroponics experimente0
Not reportedComparator
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e1“The stress of 80 mmol / L Ca( NO3)2significantly reduced plant height,leaf number,dry and fresh weight,leaf area,root length,root volume,and root vigor,and deereased the contents of photosynthetic pigments and photosynthesis on day 10”
Claim · model-written summary
Calcium nitrate stress at 80 mmol / L significantly reduced leaf area, root length and root volume of pakchoi seedlings.
- Taxon
- pakchoie0
- Material
- Hanxiaoe0
- Treatment
- 80 mmol / L Ca( NO3)2e1
- Outcome
- leaf area,root length,root volumee1
- Direction
- reducede1
- Setting
- hydroponics experimente0
Not reportedComparator
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e1“The stress of 80 mmol / L Ca( NO3)2significantly reduced plant height,leaf number,dry and fresh weight,leaf area,root length,root volume,and root vigor,and deereased the contents of photosynthetic pigments and photosynthesis on day 10”
Claim · model-written summary
Calcium nitrate stress at 80 mmol / L significantly reduced root vigor of pakchoi seedlings.
- Taxon
- pakchoie0
- Material
- Hanxiaoe0
- Treatment
- 80 mmol / L Ca( NO3)2e1
- Outcome
- root vigore1
- Direction
- reducede1
- Setting
- hydroponics experimente0
Not reportedComparator
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e1“The stress of 80 mmol / L Ca( NO3)2significantly reduced plant height,leaf number,dry and fresh weight,leaf area,root length,root volume,and root vigor,and deereased the contents of photosynthetic pigments and photosynthesis on day 10”
Claim · model-written summary
Calcium nitrate stress at 80 mmol / L decreased photosynthetic pigment contents and photosynthesis of pakchoi seedlings on day 10.
- Taxon
- pakchoie0
- Material
- Hanxiaoe0
- Treatment
- 80 mmol / L Ca( NO3)2e1
- Outcome
- contents of photosynthetic pigments and photosynthesise1
- Direction
- deereasede1
- Qualifier
- on day 10e1
- Setting
- hydroponics experimente0
Not reportedComparator
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e1“The stress of 80 mmol / L Ca( NO3)2significantly reduced plant height,leaf number,dry and fresh weight,leaf area,root length,root volume,and root vigor,and deereased the contents of photosynthetic pigments and photosynthesis on day 10”
Claim · model-written summary
Spraying exogenous spermine, spermidine or putrescine alleviated the suppression of pakchoi seedlings by calcium nitrate.
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e2“The suppressive effects of Ca( NO3)2on pakchio seedlings could be alleviated by spraying exogenous spermine( Spm),spermidine( Spd),or putrescine( Put)”
e3“with the concentrations ranging from 1. 0 to 15. 0 mmol/L Put,0. 1 to1. 5 mmol / L,or 0. 1 to 1. 0 mmol / L,respectively.”
Claim · model-written summary
Spermine at 0.3 mmol/L, spermidine at 0.5 mmol/L and putrescine at 5.0 mmol/L gave the strongest alleviation of calcium nitrate stress.
Verbatim
e0“A hydroponics experiment was conducted on calcium nitrate [Ca( NO3)2]-stress pakchoi Hanxiao”
e2“The suppressive effects of Ca( NO3)2on pakchio seedlings could be alleviated by spraying exogenous spermine( Spm),spermidine( Spd),or putrescine( Put)”
e4“0. 5 mmol / L Spd,0. 3 mmol / L Spm,or 5. 0 mmol / L Put exhibited the strongest alleviation.”
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