Abstract
In order to study the effect of salicylic acid concentrations on the mitigation of salt stress in melon plants grown on a hydroponic system an experiment was conducted in a greenhouse at Pombal – PB, Brazil, using an NFT (Nutrient Film Technique) system. The experimental design was completely randomized, in a 4 × 4 factorial scheme, corresponding to four levels of electrical conductivity of the nutrient solution—ECns (2.1—control, 3.2, 4.3, and 5.4 dS m−1) and four concentrations of salicylic acid—SA (0, 1.5, 3.0, and 4.5 mM), with six replicates. Salicylic acid at the concentration of 3.2 mM attenuated the effect of nutrient solution salinity on the fresh weight of melon fruits. The saline nutrient solution impairs gas exchange and the relative water content and increases the intercellular electrolyte leakage in the leaf blade of melon plants. However, salicylic acid attenuates the deleterious effects of salinity and attains a maximum yield of melon fruits of 23.82 t ha−1 with foliar application of 1.5 mM at ECns of 3.1 dS m−1. Salicylic acid stimulated the synthesis of total chlorophyll, the CO2 assimilation rate, and the instantaneous water use efficiency of hydroponic melon up to a concentration of 4.5 mM. The results obtained indicate that the responses of the hydroponic melon plant grown with saline nutrient solution and the application of salicylic acid are not yet fully elucidated.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Salicylic acid at 3.2 mM attenuated the effect of nutrient solution salinity on melon fruit fresh weight.
- Taxon
- melon
.jpg?width=60)
Cucumis meloe1 - Treatment
- Salicylic acid at the concentration of 3.2 mMe1
- Outcome
- fresh weight of melon fruitse1
- Direction
- attenuatede1
- Comparator
- nutrient solution salinitye1
- Setting
- greenhouse at Pombal – PB, Brazile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“a greenhouse at Pombal – PB, Brazil”
e1“Salicylic acid at the concentration of 3.2 mM attenuated the effect of nutrient solution salinity on the fresh weight of melon fruits”
Claim · model-written summary
Foliar salicylic acid at 1.5 mM at ECns 3.1 dS m−1 gave a maximum melon fruit yield of 23.82 t ha−1.
- Taxon
- melonCucumis meloe2
- Treatment
- foliar application of 1.5 mMe2
- Outcome
- yield of melon fruitse2
- Direction
- maximume2
- Value
- 23.82 t ha−1e2
- Qualifier
- at ECns of 3.1 dS m−1e2
- Setting
- greenhouse at Pombal – PB, Brazile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a greenhouse at Pombal – PB, Brazil”
e2“attains a maximum yield of melon fruits of 23.82 t ha−1 with foliar application of 1.5 mM at ECns of 3.1 dS m−1”
Claim · model-written summary
Saline nutrient solution impairs gas exchange and relative water content in melon.
- Taxon
- melonCucumis meloe3
- Treatment
- saline nutrient solutione3
- Outcome
- gas exchange and the relative water contente3
- Direction
- impairse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The saline nutrient solution impairs gas exchange and the relative water content and increases the intercellular electrolyte leakage in the leaf blade of melon plants”
Claim · model-written summary
Saline nutrient solution increases intercellular electrolyte leakage in melon leaf blades.
- Taxon
- melonCucumis meloe3
- Organ / stage
- leaf bladee3
- Treatment
- saline nutrient solutione3
- Outcome
- intercellular electrolyte leakagee3
- Direction
- increasese3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The saline nutrient solution impairs gas exchange and the relative water content and increases the intercellular electrolyte leakage in the leaf blade of melon plants”
Claim · model-written summary
Salicylic acid stimulated total chlorophyll synthesis, CO2 assimilation rate and instantaneous water use efficiency of hydroponic melon up to 4.5 mM.
- Taxon
- melonCucumis meloe4
- Treatment
- Salicylic acide4
- Outcome
- synthesis of total chlorophyll, the CO2 assimilation rate, and the instantaneous water use efficiencye4
- Direction
- stimulatede4
- Qualifier
- up to a concentration of 4.5 mMe4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Salicylic acid stimulated the synthesis of total chlorophyll, the CO2 assimilation rate, and the instantaneous water use efficiency of hydroponic melon up to a concentration of 4.5 mM”
The same questions in other papers
salicylic acid · growth · Cucumis melo (muskmelon)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →salicylic acid · physiology: photosynthesis · Cucumis melo (muskmelon)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →fertilization · physiology: oxidative · Cucumis melo (muskmelon)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
salinity · physiology: oxidative · Cucumis melo (muskmelon)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
5 papers more in this group
See all 9 papers →application · yield · Cucumis melo (muskmelon)Positive and negative results
16 papers in the same direction as this paper · 8 in the opposite direction
- no effect
- no effect
- negative
21 papers more in this group
See all 25 papers →salinity · physiology: gas exchange · Cucumis melo (muskmelon)Results agree
1 paper in the same direction as this paper
- negative
fertilization · physiology: gas exchange · Cucumis melo (muskmelon)Results agree
1 paper in the same direction as this paper
- no effect
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.