Abstract
Abstract The effect of phosphorus (P) supply on two cowpea (Vigna unguiculata) genotypes (Epace 10 and Santo Inacio) was studied. Seedlings received 0, 30 and 100 mg Pkg−1 on 3-kg P-deficient acid Alumi-Haplic-Acrisols inoculated with arbuscular mycorrhizal (AM) fungi. Biomass production, root length, AM infection rate, nodulation, flowering, grain yield and P, Ca, Mg and Al contents were evaluated. At 31 days after sowing (DAS), the cultivars were affected by P limitation without differences in development. At 70 DAS, Epace 10 had higher root length, biomass production and flowered earlier with 0-P than Santo Inacio. At 122 DAS, Epace 10 produced higher grain yields than Santo Inacio. High (60%) AM-colonization was observed with 0-P although colonization, and shoot-P, -Mg and -Ca concentrations were insignificantly (p < 0.05) different among genotypes. With 30 and 0 mg kg−1 P-supply, Santo Inacio accumulated higher shoot Al (300 – 600 mg kg−1DM) than E 10 (100 – 400 mg kg−1DM), suggesting Epace 10's higher capacity for Al exclusion under P-deficient conditions. Keywords: Acidic Alumi-Haplic-AcrisolAM infection ratearbuscular mycorrhizal (AM) fungi inoculationcowpea cultivarsphosphorus supply Acknowledgements The John D. and Catherine T. MacArthur Foundation provided the fund while the University of Ibadan facilitated the exchange program and the Institute of Plant Nutrition of the University of Hohenheim, Stuttgart in Germany hosted the first author.
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Claims 10
Claim · model-written summary
At 31 days, phosphorus limitation affected both cowpea cultivars without a developmental difference.
- Taxon
- cowpea
Vigna unguiculatat0 - Organ / stage
- 31 days after sowing (DAS)e0
- Treatment
- P limitatione0
- Outcome
- developmente0
- Direction
- without differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 31 days after sowing (DAS), the cultivars were affected by P limitation without differences in development.”
t0“cowpea”
Claim · model-written summary
At 70 days with no phosphorus, Epace 10 had longer roots than Santo Inacio.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Epace 10e0
- Organ / stage
- 70 DASe0
- Treatment
- 0-Pe0
- Outcome
- root lengthe0
- Direction
- highere0
- Comparator
- Santo Inacioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 70 DAS, Epace 10 had higher root length, biomass production and flowered earlier with 0-P than Santo Inacio.”
t0“cowpea”
Claim · model-written summary
At 70 days with no phosphorus, Epace 10 had greater biomass production than Santo Inacio.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Epace 10e0
- Organ / stage
- 70 DASe0
- Treatment
- 0-Pe0
- Outcome
- biomass productione0
- Direction
- highere0
- Comparator
- Santo Inacioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 70 DAS, Epace 10 had higher root length, biomass production and flowered earlier with 0-P than Santo Inacio.”
t0“cowpea”
Claim · model-written summary
At 70 days with no phosphorus, Epace 10 flowered earlier than Santo Inacio.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Epace 10e0
- Organ / stage
- 70 DASe0
- Treatment
- 0-Pe0
- Outcome
- flowered earliere0
- Direction
- earliere0
- Comparator
- Santo Inacioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 70 DAS, Epace 10 had higher root length, biomass production and flowered earlier with 0-P than Santo Inacio.”
t0“cowpea”
Claim · model-written summary
At 122 days Epace 10 yielded more grain than Santo Inacio.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Epace 10e0
- Organ / stage
- 122 DASe0
- Outcome
- grain yieldse0
- Direction
- highere0
- Comparator
- Santo Inacioe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 122 DAS, Epace 10 produced higher grain yields than Santo Inacio.”
t0“cowpea”
Claim · model-written summary
With no phosphorus, AM colonization reached 60%.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- 0-Pe0
- Interactor
- arbuscular mycorrhizal (AM) fungie1symbiont
- Outcome
- AM-colonizatione0
- Value
- 60%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“High (60%) AM-colonization was observed with 0-P”
e1“inoculated with arbuscular mycorrhizal (AM) fungi”
t0“cowpea”
Claim · model-written summary
AM colonization did not differ among cowpea genotypes according to the authors, whose stated p threshold conflicts with this description.
- Taxon
- cowpeaVigna unguiculatat0
- Interactor
- arbuscular mycorrhizal (AM) fungie1symbiont
- Outcome
- colonizatione0
- Direction
- insignificantlye0
- Comparator
- among genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“colonization, and shoot-P, -Mg and -Ca concentrations were insignificantly (p < 0.05) different among genotypes.”
e1“inoculated with arbuscular mycorrhizal (AM) fungi”
t0“cowpea”
Claim · model-written summary
Shoot phosphorus, magnesium and calcium concentrations were described as not different among genotypes.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- shoot-P, -Mg and -Ca concentrationse0
- Direction
- insignificantlye0
- Comparator
- among genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“colonization, and shoot-P, -Mg and -Ca concentrations were insignificantly (p < 0.05) different among genotypes.”
t0“cowpea”
Claim · model-written summary
At 0 and 30 mg/kg phosphorus, Santo Inacio had greater shoot aluminum accumulation than Epace 10.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Santo Inacioe0
- Treatment
- 30 and 0 mg kg−1 P-supplye0
- Outcome
- shoot Ale0
- Direction
- highere0
- Value
- 300 – 600 mg kg−1DMe0
- Qualifier
- 100 – 400 mg kg−1DMe0
- Comparator
- E 10e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With 30 and 0 mg kg−1 P-supply, Santo Inacio accumulated higher shoot Al (300 – 600 mg kg−1DM) than E 10 (100 – 400 mg kg−1DM)”
t0“cowpea”
Claim · model-written summary
The authors infer that Epace 10 excludes aluminum better under phosphorus deficiency.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Epace 10e0
- Outcome
- Al exclusione0
- Direction
- highere0
- Qualifier
- under P-deficient conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting Epace 10's higher capacity for Al exclusion under P-deficient conditions.”
t0“cowpea”
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 →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.