Abstract
ABSTRACT Hydrogen peroxide (H2O2) can be indicated as a strategy to mitigate salt stress in plants, so the objective of this study was to evaluate the effect of different concentrations and methods of application of H2O2 as a mitigator of salt stress on the growth, physiology, and quality of seedlings of yellow passion fruit. The experiment was carried out in a protected environment (screened) belonging to UFERSA, in Caraúbas - RN, Brazil, in a randomized block design and analyzed in a 2 × 4 × 3 factorial scheme, with four replications and one plant per plot. The treatments consisted of levels of electrical conductivity of irrigation water - ECw (0.5 and 3.2 dS m-1), H2O2 concentrations (0, 12, 24, and 36 μM), and H2O2 application methods (M1 = seed soaking, M2 = foliar spraying, and M3 = seed soaking + foliar spraying). Increased levels of salinity in irrigation water negatively affect seedling quality. Hydrogen peroxide at an average concentration of 24 µM mitigates salt stress in passion fruit seedlings cv. BRS Gigante Amarelo. H2O2 application to seeds associated with foliar spraying mitigates the effects of salt stress on the absolute growth rate of the leaf area of passion fruit seedlings irrigated with an ECw of 3.2 dS m-1.
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Claims 3
Claim · model-written summary
Hydrogen peroxide at an average concentration of 24 µM mitigated salt stress in passion fruit seedlings.
- Taxon
- passion fruit
Passiflora edulise2 - Material
- BRS Gigante Amareloe2
- Treatment
- Hydrogen peroxide at an average concentration of 24 µMe2
- Outcome
- salt stresse2
- Direction
- mitigatese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Hydrogen peroxide at an average concentration of 24 µM mitigates salt stress in passion fruit seedlings cv. BRS Gigante Amarelo”
Claim · model-written summary
Increased salinity in irrigation water negatively affected passion fruit seedling quality.
- Taxon
- passion fruitPassiflora edulise0
- Treatment
- Increased levels of salinity in irrigation watere1
- Outcome
- seedling qualitye1
- Direction
- negatively affecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings of yellow passion fruit”
e1“Increased levels of salinity in irrigation water negatively affect seedling quality”
Claim · model-written summary
H2O2 applied to seeds with foliar spraying mitigated salt-stress effects on the absolute growth rate of leaf area at an ECw of 3.2 dS m-1.
- Taxon
- passion fruitPassiflora edulise3
- Treatment
- H2O2 application to seeds associated with foliar sprayinge3
- Outcome
- absolute growth rate of the leaf areae3
- Direction
- mitigatese3
- Qualifier
- irrigated with an ECw of 3.2 dS m-1e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“H2O2 application to seeds associated with foliar spraying mitigates the effects of salt stress on the absolute growth rate of the leaf area of passion fruit seedlings irrigated with an ECw of 3.2 dS m-1”
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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.