Abstract
Selenium is an element applied to plants to improve the response to stress and increase their content in the edible parts. The aim of this study was to perform selenium applications in seeds and seedlings of tomato, lettuce and melon to verify the effect on growth, antioxidant status, and vitamin C content at photosynthetic tissues of seedlings. The experiment consisted of two phases: in the first phase selenium was applied at 0, 0.1 and 1 mg L-1 concentrations as pretreatment immersion of seeds with the subsequent determination of fresh and dry weight, leaf area, oxidation-reduction potential (ORP) and concentration of vitamin C in seedlings leaves. In the second phase selenium was applied to the seedlings at 0 and 2 mg L-1 concentrations in the nutrient solution and at 0 and 5 mg L-1 concentrations as a foliar spray at 15 and 30 days after seeding, and the same response variables mentioned for the first phase were measured. Both types of selenium applications were shown to be effective to change the antioxidant status and the vitamin C content of the three vegetables positively. Selenium applied to the seeds changes positively the antioxidant status and the concentration of vitamin C in the three crops, and just modified the growth of melon in a significant way. The application of selenium by irrigation and leaf spraying improved in significant way the antioxidant status and the vitamin C concentration in the three species, and showed only minor changes in biomass and leaf area variables.
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Claims 4
Claim · model-written summary
Selenium applied to seeds positively changed the antioxidant status and vitamin C concentration of seedlings of tomato, lettuce and melon.
- Taxon
- tomato, lettuce and melon
.jpg?width=60)
Cucumis melo
Solanum lycopersicum
Lactuca sativae1 - Treatment
- Selenium applied to the seedse0
- Outcome
- antioxidant status and the concentration of vitamin Ce0
- Direction
- positivelye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Selenium applied to the seeds changes positively the antioxidant status and the concentration of vitamin C in the three crops”
e1“tomato, lettuce and melon”
Claim · model-written summary
Selenium applied to seeds significantly modified growth of melon only.
- Taxon
- melonCucumis meloe0
- Treatment
- Selenium applied to the seedse0
- Outcome
- growth of melone0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selenium applied to the seeds changes positively the antioxidant status and the concentration of vitamin C in the three crops, and just modified the growth of melon in a significant way”
Claim · model-written summary
Selenium applied by irrigation and leaf spraying significantly improved antioxidant status and vitamin C concentration in tomato, lettuce and melon seedlings.
- Taxon
- tomato, lettuce and melonCucumis meloSolanum lycopersicumLactuca sativae1
- Treatment
- application of selenium by irrigation and leaf sprayinge0
- Outcome
- antioxidant status and the vitamin C concentratione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of selenium by irrigation and leaf spraying improved in significant way the antioxidant status and the vitamin C concentration in the three species”
e1“tomato, lettuce and melon”
Claim · model-written summary
Selenium applied by irrigation and leaf spraying produced only minor changes in biomass and leaf area of tomato, lettuce and melon seedlings.
- Taxon
- tomato, lettuce and melonCucumis meloSolanum lycopersicumLactuca sativae1
- Treatment
- application of selenium by irrigation and leaf sprayinge0
- Outcome
- biomass and leaf area variablese0
- Direction
- minor changese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of selenium by irrigation and leaf spraying improved in significant way the antioxidant status and the vitamin C concentration in the three species, and showed only minor changes in biomass and leaf area variables”
e1“tomato, lettuce and melon”
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