Abstract
Abstract Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1) were grown in pots containing field soil to investigate the effects of supplementary potassium phosphate applied to the root zone of salt‐stressed plants. Treatments were (1) control: soil alone (C); (2) salt treatment: C plus 3.5 g NaCl kg−1 soil (C + S); and (3) supplementary potassium phosphate: C + S plus supplementary 136 or 272 mg KH2PO4 kg−1 soil (C + S + KP). Plants grown in saline treatment produced less dry matter, fruit yield, and chlorophyll than those in the control. Supplementary 136 or 272 mg KH2PO4 kg−1 soil resulted in increases in dry matter, fruit yield, and chlorophyll concentrations compared to salt‐stressed (C + S) treatment. Membrane permeability in leaf cells (as assessed by electrolyte leakage from leaves) was impaired by NaCl application. Supplementary KH2PO4 reduced electrolyte leakage especially at the higher rate. Sodium (Na) concentration in plant tissues increased in leaves and roots in the NaCl treatment. Concentrations of potassium (K) and Phosphorus (P) in leaves were lowered in salt treatment and almost fully restored by supplementary KH2PO4 at 272 mg kg−1 soil. These results clearly show that supplementary KH2PO4 can partly mitigate the adverse effects of high salinity on both fruit yield and whole plant biomass in pepper and cucumber plants.
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Claims 9
Claim · model-written summary
Salt treatment reduced dry matter, fruit yield and chlorophyll relative to control in pepper and cucumber.
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Plants grown in saline treatment produced less dry matter, fruit yield, and chlorophyll than those in the control.”
Claim · model-written summary
Salt treatment reduced dry matter, fruit yield and chlorophyll relative to control in cucumber.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- saline treatmente1
- Outcome
- dry matter, fruit yield, and chlorophylle1
- Direction
- lesse1
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Plants grown in saline treatment produced less dry matter, fruit yield, and chlorophyll than those in the control.”
Claim · model-written summary
Supplementary potassium phosphate increased dry matter, fruit yield and chlorophyll over salt treatment in pepper.
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto)”
e1“Supplementary 136 or 272 mg KH2PO4 kg−1 soil resulted in increases in dry matter, fruit yield, and chlorophyll concentrations compared to salt‐stressed (C + S) treatment.”
Claim · model-written summary
Supplementary potassium phosphate increased dry matter, fruit yield and chlorophyll over salt treatment in cucumber.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Supplementary 136 or 272 mg KH2PO4 kg−1 soile1
- Outcome
- dry matter, fruit yield, and chlorophyll concentrationse1
- Direction
- increasese1
- Comparator
- salt‐stressed (C + S) treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Supplementary 136 or 272 mg KH2PO4 kg−1 soil resulted in increases in dry matter, fruit yield, and chlorophyll concentrations compared to salt‐stressed (C + S) treatment.”
Claim · model-written summary
NaCl impaired leaf-cell membrane permeability.
- Taxon
- Bell peppere0
- Treatment
- NaCl applicatione1
- Outcome
- Membrane permeability in leaf cellse1
- Direction
- impairede1
Not reportedComparator
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Membrane permeability in leaf cells (as assessed by electrolyte leakage from leaves) was impaired by NaCl application.”
Claim · model-written summary
Supplementary KH2PO4 reduced leaf electrolyte leakage, especially at the higher rate.
- Taxon
- Bell peppere0
- Treatment
- Supplementary KH2PO4e1
- Outcome
- electrolyte leakagee1
- Direction
- reducede1
- Qualifier
- especially at the higher ratee1
Not reportedComparator
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Supplementary KH2PO4 reduced electrolyte leakage especially at the higher rate.”
Claim · model-written summary
NaCl increased sodium concentration in leaves and roots.
- Taxon
- Bell peppere0
- Organ / stage
- leaves and rootse1
- Treatment
- NaCl treatmente1
- Outcome
- Sodium (Na) concentration in plant tissuese1
- Direction
- increasede1
Not reportedComparator
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Sodium (Na) concentration in plant tissues increased in leaves and roots in the NaCl treatment.”
Claim · model-written summary
Salt treatment lowered leaf potassium and phosphorus concentrations.
- Taxon
- Bell peppere0
- Treatment
- salt treatmente1
- Outcome
- Concentrations of potassium (K) and Phosphorus (P) in leavese1
- Direction
- lowerede1
Not reportedComparator
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Concentrations of potassium (K) and Phosphorus (P) in leaves were lowered in salt treatment”
Claim · model-written summary
Supplementary KH2PO4 at 272 mg kg−1 soil almost fully restored leaf potassium and phosphorus concentrations.
Verbatim
e0“Bell pepper (Capsicum annuum cv. Urfa Isoto) and cucumber (Cucumis sativus cv. Beith Alpha F1)”
e1“Concentrations of potassium (K) and Phosphorus (P) in leaves were lowered in salt treatment and almost fully restored by supplementary KH2PO4 at 272 mg kg−1 soil.”
The same questions in other papers
sodium chloride · molecular: metabolites · Capsicum annuum (sweet pepper)Results agree
2 papers in the same direction as this paper
- negative
- negative
sodium chloride · physiology: oxidative · Capsicum annuum (sweet pepper)Results agree
3 papers in the same direction as this paper
- no effect
- negative
- negative
salinity · physiology: pigments · Capsicum annuum (sweet pepper)Results differ
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- positive
- positive
- negative
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See all 13 papers →salinity · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results
13 papers in the same direction as this paper · 1 in the opposite direction
- negative
- negative
- positive
11 papers more in this group
See all 15 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.