Abstract
Abstract: Seed priming with salicylic acid (SA) has been described as a method with potential to improve seed germination under unfavorable conditions. The present study aimed to evaluate the ability of seed priming with SA to attenuate the impact of water restriction during germination and early seedling growth of tomato. Seeds were subjected to different concentrations of SA (0, 25 and 50 µM) and sowed on substrates at different percentages of the water holding capacity (20, 30, 40 and 100%). The following variables were evaluated: germination, first count of germination, germination speed index, shoots/root length and dry mass, superoxide dismutase, ascorbate peroxidase and catalase activities, contents of hydrogen peroxide and of malondialdehyde. Water restriction significantly decreased the variables related to germination and seedling performance. Despite increasing germination speed and seedling development when combined with well-irrigated conditions, priming with SA negatively impacted those characteristics under water deficit conditions. That was through increases in superoxide dismutase activity and H2O2 accumulation. Thus, it was concluded that seed priming with SA does not improve tomato seed germination and early seedling growth under water deficit.
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Claims 5
Claim · model-written summary
Water restriction significantly decreased the variables related to germination and seedling performance of tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Treatment
- Water restrictione1
- Outcome
- variables related to germination and seedling performancee1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during germination and early seedling growth of tomato”
e1“Water restriction significantly decreased the variables related to germination and seedling performance”
Claim · model-written summary
Priming with SA combined with well-irrigated conditions increased germination speed and seedling development in tomato.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- priming with SAe2
- Outcome
- germination speed and seedling developmente1
- Direction
- increasinge1
- Qualifier
- when combined with well-irrigated conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during germination and early seedling growth of tomato”
e1“Despite increasing germination speed and seedling development when combined with well-irrigated conditions”
e2“priming with SA negatively impacted those characteristics under water deficit conditions”
Claim · model-written summary
Priming with SA negatively affected germination and seedling characteristics of tomato under water deficit.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- priming with SAe2
- Outcome
- those characteristicse2
- Direction
- negatively impactede2
- Qualifier
- under water deficit conditionse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during germination and early seedling growth of tomato”
e2“priming with SA negatively impacted those characteristics under water deficit conditions”
Claim · model-written summary
Increased superoxide dismutase activity and H2O2 accumulation explain the negative effect of SA priming under water deficit.
- Taxon
- tomatoSolanum lycopersicume0
- Gene
- superoxide dismutase activitye1
- Compound
- H2O2e1
- Outcome
- those characteristicse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during germination and early seedling growth of tomato”
e1“That was through increases in superoxide dismutase activity and H2O2 accumulation”
e2“priming with SA negatively impacted those characteristics under water deficit conditions”
Claim · model-written summary
Seed priming with SA does not improve tomato seed germination and early seedling growth under water deficit.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- seed priming with SAe0
- Outcome
- tomato seed germination and early seedling growthe0
- Direction
- does not improvee0
- Qualifier
- under water deficite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed priming with SA does not improve tomato seed germination and early seedling growth under water deficit”
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