Abstract
Salinity is among the biggest challenges of irrigated agriculture, as it induces several limitations to the growth and physiology of plants; therefore, strategies should be sought that minimize its impacts on plants. In this scenario, the present study was developed to examine the effects of different salicylic acid (SA) application methods on photosynthetic pigments, chlorophyll a fluorescence, gas exchange, and biomass accumulation of cherry tomato under salt stress. The study was carried out in a greenhouse, using a Regosol soil (Psamments) with a sandy-loam texture. The treatments were distributed in a completely randomized design, in a 2 × 4 factorial arrangement consisting of two levels of electrical conductivity in the irrigation water (0.6 or 2.6 dS m-1) and four salicylic acid application methods (M1 = without SA [control] application; M2 = foliar spray; M3 = irrigation; or M4 = spray and irrigation), with five replicates. Irrigation with 2.6 dS m-1 salinity water negatively affected chlorophyll a fluorescence and the total chlorophyll, chlorophyll a, and carotenoid contents, in addition to inhibiting stem dry biomass production and root/shoot ratio. Foliar spray with salicylic acid minimized the deleterious effects of salt stress on gas exchange and chlorophyll content and increased leaf and root dry biomass accumulation and the root/shoot ratio of cherry tomatoes at 120 days after sowing.
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Claims 4
Claim · model-written summary
Saline irrigation negatively affected chlorophyll fluorescence and pigment contents.
- Taxon
- cherry tomatoes
Solanum lycopersicum var. cerasiformet0 - Treatment
- 2.6 dS m-1 salinity watere0
- Outcome
- chlorophyll a fluorescence and the total chlorophyll, chlorophyll a, and carotenoid contentse0
- Comparator
- 0.6e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with 2.6 dS m-1 salinity water negatively affected chlorophyll a fluorescence and the total chlorophyll, chlorophyll a, and carotenoid contents”
e1“two levels of electrical conductivity in the irrigation water (0.6 or 2.6 dS m-1)”
t0“cherry tomatoes”
Claim · model-written summary
Saline irrigation inhibited stem dry biomass production and root to shoot ratio.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformet0
- Organ / stage
- steme0
- Treatment
- 2.6 dS m-1 salinity watere0
- Outcome
- stem dry biomass production and root/shoot ratioe0
- Direction
- inhibitinge0
- Comparator
- 0.6e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with 2.6 dS m-1 salinity water negatively affected chlorophyll a fluorescence and the total chlorophyll, chlorophyll a, and carotenoid contents, in addition to inhibiting stem dry biomass production and root/shoot ratio.”
e1“two levels of electrical conductivity in the irrigation water (0.6 or 2.6 dS m-1)”
t0“cherry tomatoes”
Claim · model-written summary
Foliar salicylic acid minimized adverse salt effects on gas exchange and chlorophyll content.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformee0
- Treatment
- Foliar spray with salicylic acide0
- Outcome
- gas exchange and chlorophyll contente0
- Direction
- minimizede0
- Qualifier
- salt stresse0
- Comparator
- without SA [control] applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spray with salicylic acid minimized the deleterious effects of salt stress on gas exchange and chlorophyll content and increased leaf and root dry biomass accumulation and the root/shoot ratio of cherry tomatoes at 120 days after sowing.”
e1“M1 = without SA [control] application”
Claim · model-written summary
Foliar salicylic acid increased leaf and root biomass and root to shoot ratio at 120 days.
- Taxon
- cherry tomatoesSolanum lycopersicum var. cerasiformee0
- Treatment
- Foliar spray with salicylic acide0
- Outcome
- leaf and root dry biomass accumulation and the root/shoot ratioe0
- Direction
- increasede0
- Qualifier
- at 120 days after sowinge0
- Comparator
- without SA [control] applicatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spray with salicylic acid minimized the deleterious effects of salt stress on gas exchange and chlorophyll content and increased leaf and root dry biomass accumulation and the root/shoot ratio of cherry tomatoes at 120 days after sowing.”
e1“M1 = without SA [control] application”
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