Abstract
The allelopathic potentials of aqueous extracts of Conyza canadensis L.were investigated to determine the role of allelopathic potentials of vegetable.In this study,with C.canadensis L.as Allelochemicals donor plants,sweet cabbage and Brassica chinensis L.seeds as the receptors,respectively,the filter paper method of petri dishes was used to examine how water extract of plant aerial parts affect the root length,seedling height,and fresh weight of sweet cabbage and B.chinensis L..The result showed that water extract of aerial parts of C.canadensis L.had obvious allelopathic effect on seedling growth of sweet cabbage and B.chinensis L.,and different concentrations of aqueous extracts made different effects.The inhibition of aqueous extracts to root growth was observed,which become stronger with the concentration of aqueous extracts going up.The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively;and these of B.chinensis L.decreased by 69.0%,93.7% and 100.0%,respectively.For seedling height the effect of aqueous extracts of C.canadensis L.beneficial under lower concentration and inhibitory under higher concentration.
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Claims 12
Claim · model-written summary
At 0.25 g/mL, Conyza extract reduced sweet cabbage root length by 69.3% compared with control.
- Taxon
- sweet cabbagee0
- Treatment
- 0.25e0
- Interactor
- C.canadensis L.
Erigeron canadensise1other - Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 69.3%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
At 0.50 g/mL, Conyza extract reduced sweet cabbage root length by 95.1% compared with control.
- Taxon
- sweet cabbagee0
- Treatment
- 0.50e0
- Interactor
- C.canadensis L.Erigeron canadensise1other
- Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 95.1%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
At 1.00 g/mL, Conyza extract reduced sweet cabbage root length by 100.0% compared with control.
- Taxon
- sweet cabbagee0
- Treatment
- 1.00 g/mLe0
- Interactor
- C.canadensis L.Erigeron canadensise1other
- Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 100.0%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
At 0.25 g/mL, Conyza extract reduced B.chinensis root length by 69.0% compared with control.
- Taxon
- B.chinensis L.
.jpg?width=60)
Brassica rapa subsp. chinensise0 - Treatment
- 0.25e0
- Interactor
- C.canadensis L.Erigeron canadensise1other
- Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 69.0%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively;and these of B.chinensis L.decreased by 69.0%,93.7% and 100.0%,respectively.”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
At 0.50 g/mL, Conyza extract reduced B.chinensis root length by 93.7% compared with control.
- Taxon
- B.chinensis L.Brassica rapa subsp. chinensise0
- Treatment
- 0.50e0
- Interactor
- C.canadensis L.Erigeron canadensise1other
- Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 93.7%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively;and these of B.chinensis L.decreased by 69.0%,93.7% and 100.0%,respectively.”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
At 1.00 g/mL, Conyza extract reduced B.chinensis root length by 100.0% compared with control.
- Taxon
- B.chinensis L.Brassica rapa subsp. chinensise0
- Treatment
- 1.00 g/mLe0
- Interactor
- C.canadensis L.Erigeron canadensise1other
- Outcome
- root lengthe0
- Direction
- decreasede0
- Value
- 100.0%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of 0.25,0.50,1.00 g/mL,compared to the control,root length of sweet cabbage decreased by 69.3%,95.1% and 100.0%,respectively;and these of B.chinensis L.decreased by 69.0%,93.7% and 100.0%,respectively.”
e1“water extract of aerial parts of C.canadensis L.”
Claim · model-written summary
Conyza extracts inhibited root growth increasingly as extract concentration increased.
Verbatim
e0“The inhibition of aqueous extracts to root growth was observed,which become stronger with the concentration of aqueous extracts going up.”
t0“Sweet Cabbage”
Claim · model-written summary
Conyza extracts increasingly inhibited B.chinensis root growth with rising concentration.
- Taxon
- Brassica chinensis L.Brassica rapa subsp. chinensist0
- Treatment
- concentration of aqueous extractse0
- Outcome
- inhibition of aqueous extracts to root growthe0
- Direction
- strongere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inhibition of aqueous extracts to root growth was observed,which become stronger with the concentration of aqueous extracts going up.”
t0“Brassica chinensis L.”
Claim · model-written summary
Lower Conyza extract concentration benefited sweet cabbage seedling height.
- Taxon
- Sweet Cabbaget0
- Treatment
- aqueous extracts of C.canadensis L.e0
- Interactor
- C.canadensis L.Erigeron canadensise0other
- Outcome
- seedling heighte0
- Direction
- beneficiale0
- Qualifier
- lower concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For seedling height the effect of aqueous extracts of C.canadensis L.beneficial under lower concentration and inhibitory under higher concentration.”
t0“Sweet Cabbage”
Claim · model-written summary
Higher Conyza extract concentration inhibited sweet cabbage seedling height.
- Taxon
- Sweet Cabbaget0
- Treatment
- aqueous extracts of C.canadensis L.e0
- Interactor
- C.canadensis L.Erigeron canadensise0other
- Outcome
- seedling heighte0
- Direction
- inhibitorye0
- Qualifier
- higher concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For seedling height the effect of aqueous extracts of C.canadensis L.beneficial under lower concentration and inhibitory under higher concentration.”
t0“Sweet Cabbage”
Claim · model-written summary
Lower Conyza extract concentration benefited Brassica chinensis seedling height.
- Taxon
- Brassica chinensis L.Brassica rapa subsp. chinensist0
- Treatment
- aqueous extracts of C.canadensis L.e0
- Interactor
- C.canadensis L.Erigeron canadensise0other
- Outcome
- seedling heighte0
- Direction
- beneficiale0
- Qualifier
- lower concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For seedling height the effect of aqueous extracts of C.canadensis L.beneficial under lower concentration and inhibitory under higher concentration.”
t0“Brassica chinensis L.”
Claim · model-written summary
Higher Conyza extract concentration inhibited Brassica chinensis seedling height.
- Taxon
- Brassica chinensis L.Brassica rapa subsp. chinensist0
- Treatment
- aqueous extracts of C.canadensis L.e0
- Interactor
- C.canadensis L.Erigeron canadensise0other
- Outcome
- seedling heighte0
- Direction
- inhibitorye0
- Qualifier
- higher concentratione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For seedling height the effect of aqueous extracts of C.canadensis L.beneficial under lower concentration and inhibitory under higher concentration.”
t0“Brassica chinensis L.”
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