Abstract
【Objective】 Our aim is to investigate effects of allelopathy from the early decomposition of Eucalypt foliar litter on photosynthesis efficiency and apparatus of Brassica chinensis.【Method】 A pot-experiment with five levels of Eucalypt leaf litter mass(0,20,40,80,and 120 g per pot) were used to examine the impacts of allelopathy during natural releasing process of Eucalypt foliar litter on the photosynthesis of B.chinensis.【Results】 The contents of pigments decreased with increasing Eucalypt foliar litter.The most significant decline happened to chlorophyll a.The greatest decrease rate(67.3%) of chlorophyll was observed at the highest level(120 g per pot).The angle(θ) Pn-PAR and Pn-Ci curve,AQY,Lsp,Pmax under the photo-saturation and Pmax under the CO2-saturation,CE and Rp decreased(except for Ccp and Csp) with Eucalypt litter addition.Fo',Fm',Fs,Fv'/Fm',ΦPSⅡ,qP,qN were also decreased by litter addition.There were significant differences in such parameters between control and level of 80 or 120 g per pot(P0.05).【Conclusion】 Our results indicated that the allelopathic substances released from Eucalypt leaf litter significantly sbupressed photosynthesis of pakchoi,and the photosynthesis system was,to some extent,destroyed by the allelopathic substances.
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Claims 11
Claim · model-written summary
Contents of pigments in Brassica chinensis decreased with increasing eucalypt foliar litter.
- Taxon
- Brassica chinensis
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Brassica rapa subsp. chinensise0 - Treatment
- Eucalypt foliar littere1
- Outcome
- contents of pigmentse1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e1“The contents of pigments decreased with increasing Eucalypt foliar litter”
Claim · model-written summary
Chlorophyll decreased by 67.3% at the highest litter level (120 g per pot).
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- highest level(120 g per pot)e3
- Outcome
- chlorophylle3
- Direction
- decreasee3
- Value
- 67.3%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e3“The greatest decrease rate(67.3%) of chlorophyll was observed at the highest level(120 g per pot)”
Claim · model-written summary
Chlorophyll a showed the most significant decline among the pigments under eucalypt litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- Eucalypt foliar littere1
- Outcome
- chlorophyll ae2
- Direction
- declinee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e1“The contents of pigments decreased with increasing Eucalypt foliar litter”
e2“The most significant decline happened to chlorophyll a”
Claim · model-written summary
The angle(θ), Pn-PAR and Pn-Ci curve decreased with eucalypt litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- Eucalypt foliar littere1
- Outcome
- angle(θ) Pn-PAR and Pn-Ci curvee4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e1“The contents of pigments decreased with increasing Eucalypt foliar litter”
e4“The angle(θ) Pn-PAR and Pn-Ci curve,AQY,Lsp,Pmax under the photo-saturation and Pmax under the CO2-saturation,CE and Rp decreased”
Claim · model-written summary
AQY, Lsp and Pmax under photo-saturation decreased with eucalypt litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- Eucalypt foliar littere1
- Outcome
- AQY,Lsp,Pmax under the photo-saturatione4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e1“The contents of pigments decreased with increasing Eucalypt foliar litter”
e4“The angle(θ) Pn-PAR and Pn-Ci curve,AQY,Lsp,Pmax under the photo-saturation and Pmax under the CO2-saturation,CE and Rp decreased”
Claim · model-written summary
Pmax under CO2-saturation, CE and Rp decreased with eucalypt litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- Eucalypt foliar littere1
- Outcome
- Pmax under the CO2-saturation,CE and Rpe4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e1“The contents of pigments decreased with increasing Eucalypt foliar litter”
e4“The angle(θ) Pn-PAR and Pn-Ci curve,AQY,Lsp,Pmax under the photo-saturation and Pmax under the CO2-saturation,CE and Rp decreased”
Claim · model-written summary
Fo', Fm' and Fs decreased with litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- litter additione5
- Outcome
- Fo',Fm',Fse5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e5“Fo',Fm',Fs,Fv'/Fm',ΦPSⅡ,qP,qN were also decreased by litter addition”
Claim · model-written summary
Fv'/Fm', ΦPSⅡ and qP decreased with litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- litter additione5
- Outcome
- Fv'/Fm',ΦPSⅡ,qPe5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e5“Fo',Fm',Fs,Fv'/Fm',ΦPSⅡ,qP,qN were also decreased by litter addition”
Claim · model-written summary
qN decreased with litter addition.
- Taxon
- Brassica chinensisBrassica rapa subsp. chinensise0
- Treatment
- litter additione5
- Outcome
- qNe5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photosynthesis efficiency and apparatus of Brassica chinensis”
e5“Fo',Fm',Fs,Fv'/Fm',ΦPSⅡ,qP,qN were also decreased by litter addition”
Claim · model-written summary
Allelopathic substances released from eucalypt leaf litter significantly suppressed photosynthesis of pakchoi.
- Taxon
- pakchoie6
- Treatment
- allelopathic substances released from Eucalypt leaf littere6
- Outcome
- photosynthesise6
- Direction
- decreaseinferrede6
Not reportedComparator
Verbatim
e6“the allelopathic substances released from Eucalypt leaf litter significantly sbupressed photosynthesis of pakchoi”
Claim · model-written summary
The photosynthesis system of pakchoi was to some extent destroyed by the allelopathic substances.
Verbatim
e6“the allelopathic substances released from Eucalypt leaf litter significantly sbupressed photosynthesis of pakchoi”
e7“the photosynthesis system was,to some extent,destroyed by the allelopathic substances”
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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.