Abstract
Effects of phosphorus stress on some physiological indexes of Vigna unguiculata(Linn.) Walp.were studied by hydroponic culture method.The results showed that the main root length under the no phosphorus application treatment(LP) was about 43% longger than that of the control(HP),the lateral root number increased by 33% compared with the control,and the root volume was raised,while the leaf area reduced when the culture solution had no phosphate.When there was no phosphorus supplied,the root activity and secreted acid phosphatase were increased to 2.3 and 1.7 times of those of the phosphorus application treatment,respectively.Compared with the control,both the photosynthetic rate and the transpiration rate decreased by 30%.Under the phosphorus deficiency the dry mass lowered remarkably,and the size of stomata became smaller and stomata density decreased.These results showed that the phosphorus deficiency affected the shoot dry mass accumulation and almost had no effects on accumulation of root dry mass.Phosphorus deficiency had more negative effects on shoot than on root.
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Claims 13
Claim · model-written summary
No-phosphorus treatment increased cowpea main root length by about 43% relative to phosphorus control.
- Taxon
- Vigna unguiculata(Linn.) Walp.
Vigna unguiculatae1 - Treatment
- no phosphorus application treatment(LP)e0
- Outcome
- main root lengthe0
- Direction
- longgere0
- Value
- 43%e0
- Comparator
- control(HP)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“main root length under the no phosphorus application treatment(LP) was about 43% longger than that of the control(HP)”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
No-phosphorus treatment increased cowpea lateral root number by 33% relative to control.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- no phosphorus application treatment(LP)e1
- Outcome
- lateral root numbere0
- Direction
- increasede0
- Value
- 33%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lateral root number increased by 33% compared with the control”
e1“no phosphorus application treatment(LP)”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
No-phosphorus treatment raised cowpea root volume.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- no phosphorus application treatment(LP)e1
- Outcome
- root volumee0
- Direction
- raisede0
- Comparator
- control(HP)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the root volume was raised”
e1“no phosphorus application treatment(LP) was about 43% longger than that of the control(HP)”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
No-phosphorus culture reduced cowpea leaf area.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae1
- Treatment
- no phosphatee0
- Outcome
- leaf areae0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the leaf area reduced when the culture solution had no phosphate”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Without phosphorus, cowpea root activity increased to 2.3 times the phosphorus-fed control.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae1
- Treatment
- no phosphorus suppliede0
- Outcome
- root activitye0
- Direction
- increasede0
- Value
- 2.3e0
- Comparator
- phosphorus application treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When there was no phosphorus supplied,the root activity and secreted acid phosphatase were increased to 2.3 and 1.7 times of those of the phosphorus application treatment,respectively”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Without phosphorus, cowpea secreted acid phosphatase increased to 1.7 times control.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae1
- Treatment
- no phosphorus suppliede0
- Outcome
- secreted acid phosphatasee0
- Direction
- increasede0
- Value
- 1.7 timese0
- Comparator
- phosphorus application treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When there was no phosphorus supplied,the root activity and secreted acid phosphatase were increased to 2.3 and 1.7 times of those of the phosphorus application treatment,respectively”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency lowered cowpea photosynthetic rate by 30%.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- no phosphorus suppliede1
- Outcome
- photosynthetic ratee0
- Direction
- decreasede0
- Value
- 30%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control,both the photosynthetic rate and the transpiration rate decreased by 30%”
e1“no phosphorus supplied”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency lowered cowpea transpiration rate by 30%.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- no phosphorus suppliede1
- Outcome
- transpiration ratee0
- Direction
- decreasede0
- Value
- 30%e0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the control,both the photosynthetic rate and the transpiration rate decreased by 30%”
e1“no phosphorus supplied”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency markedly lowered cowpea dry mass.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae1
- Treatment
- phosphorus deficiencye0
- Outcome
- dry masse0
- Direction
- lowered remarkablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the phosphorus deficiency the dry mass lowered remarkably”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency made cowpea stomata smaller and reduced stomatal density.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- phosphorus deficiencye1
- Outcome
- size of stomatae0
- Direction
- smallere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the size of stomata became smaller and stomata density decreased”
e1“Under the phosphorus deficiency”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency reduced cowpea stomatal density.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- phosphorus deficiencye1
- Outcome
- stomata densitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomata density decreased”
e1“Under the phosphorus deficiency”
e2“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency reduced cowpea shoot dry mass accumulation.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae1
- Treatment
- phosphorus deficiencye0
- Outcome
- shoot dry mass accumulatione0
- Direction
- affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“phosphorus deficiency affected the shoot dry mass accumulation”
e1“Vigna unguiculata(Linn.) Walp.”
Claim · model-written summary
Phosphorus deficiency had almost no effect on cowpea root dry mass accumulation.
- Taxon
- Vigna unguiculata(Linn.) Walp.Vigna unguiculatae2
- Treatment
- Phosphorus deficiencye1
- Outcome
- accumulation of root dry masse0
- Direction
- almost had no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“almost had no effects on accumulation of root dry mass”
e1“Phosphorus deficiency”
e2“Vigna unguiculata(Linn.) Walp.”
The same questions in other papers
phosphorus · growth · Vigna unguiculata (cowpea)Results differ
51 papers in the same direction as this paper · 4 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- negative
- no effect
52 papers more in this group
See all 56 papers →phosphorus · physiology: photosynthesis · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
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.