Abstract
ABSTRACT: Okra is a vegetable that stands out for its low production cost, high yield, high nutritional and value and socioeconomic importance in income generation, especially in family farming. In this context, the present study evaluated the physiology, production and water use efficiency of okra under irrigation with saline water and exogenous application of hydrogen peroxide. The treatments were distributed in a randomized block design, in a 5 × 3 factorial arrangement, with five levels of electrical conductivity of irrigation water - ECw (0.3; 1.3; 2.3; 3.3 and 4.3 dS m-1) and three concentrations of hydrogen peroxide - H2O2 (0, 25 and 50 μM), with five replicates, totaling 75 plants. Irrigation with ECw above 0.3 dS m-1 negatively affected stomatal conductance, transpiration, number of fruits, total production and water use efficiency of okra cv. Clemson Americano 80. Hydrogen peroxide at concentration of 22 μM mitigated the effects of salt stress on CO2 assimilation rate, number of fruits, average fruit weight and total production of okra cv. Clemson Americano 80. Water use efficiency is favored by H2O2 application at concentration of 12 μM, especially in plants irrigated with ECw of 0.3 dS m-1.
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Claims 6
Claim · model-written summary
Irrigation water above 0.3 dS m-1 negatively affected stomatal conductance and transpiration of okra.
- Taxon
- okra
.jpg?width=60)
Abelmoschus esculentuse0 - Material
- Clemson Americano 80e0
- Treatment
- Irrigation with ECw above 0.3 dS m-1e0
- Outcome
- stomatal conductance, transpiratione0
- Direction
- negatively affectede0
- Comparator
- 0.3 dS m-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Irrigation with ECw above 0.3 dS m-1 negatively affected stomatal conductance, transpiration, number of fruits, total production and water use efficiency of okra cv. Clemson Americano 80”
Claim · model-written summary
Irrigation water above 0.3 dS m-1 negatively affected number of fruits and total production of okra.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- Clemson Americano 80e0
- Treatment
- Irrigation with ECw above 0.3 dS m-1e0
- Outcome
- number of fruits, total productione0
- Direction
- negatively affectede0
- Comparator
- 0.3 dS m-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with ECw above 0.3 dS m-1 negatively affected stomatal conductance, transpiration, number of fruits, total production and water use efficiency of okra cv. Clemson Americano 80”
Claim · model-written summary
Irrigation water above 0.3 dS m-1 negatively affected water use efficiency of okra.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- Clemson Americano 80e0
- Treatment
- Irrigation with ECw above 0.3 dS m-1e0
- Outcome
- water use efficiencye0
- Direction
- negatively affectede0
- Comparator
- 0.3 dS m-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with ECw above 0.3 dS m-1 negatively affected stomatal conductance, transpiration, number of fruits, total production and water use efficiency of okra cv. Clemson Americano 80”
Claim · model-written summary
Hydrogen peroxide at 22 μM mitigated salt stress effects on CO2 assimilation rate of okra.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- Clemson Americano 80e0
- Treatment
- Hydrogen peroxide at concentration of 22 μMe0
- Outcome
- CO2 assimilation ratee0
- Direction
- mitigatede0
- Qualifier
- effects of salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydrogen peroxide at concentration of 22 μM mitigated the effects of salt stress on CO2 assimilation rate, number of fruits, average fruit weight and total production of okra cv. Clemson Americano 80”
Claim · model-written summary
Hydrogen peroxide at 22 μM mitigated salt stress effects on number of fruits, average fruit weight and total production of okra.
- Taxon
- okraAbelmoschus esculentuse0
- Material
- Clemson Americano 80e0
- Treatment
- Hydrogen peroxide at concentration of 22 μMe0
- Outcome
- number of fruits, average fruit weight and total productione0
- Direction
- mitigatede0
- Qualifier
- effects of salt stresse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hydrogen peroxide at concentration of 22 μM mitigated the effects of salt stress on CO2 assimilation rate, number of fruits, average fruit weight and total production of okra cv. Clemson Americano 80”
Claim · model-written summary
Hydrogen peroxide at 12 μM favored water use efficiency of okra, especially at 0.3 dS m-1 irrigation water.
- Taxon
- okraAbelmoschus esculentuse1
- Treatment
- H2O2 application at concentration of 12 μMe0
- Outcome
- Water use efficiencye0
- Direction
- favorede0
- Qualifier
- especially in plants irrigated with ECw of 0.3 dS m-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water use efficiency is favored by H2O2 application at concentration of 12 μM, especially in plants irrigated with ECw of 0.3 dS m-1”
e1“Irrigation with ECw above 0.3 dS m-1 negatively affected stomatal conductance, transpiration, number of fruits, total production and water use efficiency of okra cv. Clemson Americano 80”
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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.