Abstract
Selenium (Se) is an essential element for human and livestock with antioxidant and anticancer characteristics. Although Se is not an essential element for plants, it has been reported that it can improve plant growth. This experiment was conducted at the Isfahan University of Technology in winter 2010. The experiment was factorial based on a completely randomized design (CRD) with four replications. Se was added to nutrient solution in four concentrations 2, 4, and 6 mg/L sodium selenite (Na2SeO3). Root volume, fresh and dry weights of shoots and roots, number and weight of fruits, chlorophyll content, and photosynthesis traits [photosynthesis rate, stomata internal carbon dioxide (CO2) concentration, stomata conductance] were measured. Results showed that Se increased root dry weight. Fresh and dry weights of shoot increased in the 2 mg/L Se treatment and decreased at the higher level of Se. Chlorophyll content and photosynthesis rate were not affected by Se. Stomata internal CO2 concentration and stomata conductance decreased by Se addition. Overall, Se at 2 mg/L application rate was effective in some physiological characteristics of cucumber.
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Claims 5
Claim · model-written summary
Selenium increased root dry weight.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- See0
- Outcome
- root dry weighte0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Se increased root dry weight”
Claim · model-written summary
At 2 mg/L, selenium increased shoot fresh and dry weights.
- Taxon
- cucumberCucumis sativust0
- Treatment
- 2 mg/L Se treatmente0
- Outcome
- Fresh and dry weights of shoote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Fresh and dry weights of shoot increased in the 2 mg/L Se treatment”
Claim · model-written summary
Higher selenium levels decreased shoot fresh and dry weights.
- Taxon
- cucumberCucumis sativust0
- Treatment
- higher level of See0
- Outcome
- Fresh and dry weights of shoote0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Fresh and dry weights of shoot increased in the 2 mg/L Se treatment and decreased at the higher level of Se”
Claim · model-written summary
Selenium did not affect chlorophyll content or photosynthesis rate.
- Taxon
- cucumberCucumis sativust0
- Treatment
- See0
- Outcome
- Chlorophyll content and photosynthesis ratee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Chlorophyll content and photosynthesis rate were not affected by Se”
Claim · model-written summary
Selenium decreased stomatal internal carbon dioxide concentration and conductance.
- Taxon
- cucumberCucumis sativust0
- Treatment
- Se additione0
- Outcome
- Stomata internal CO2 concentration and stomata conductancee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber”
e0“Stomata internal CO2 concentration and stomata conductance decreased by Se addition”
The same questions in other papers
selenium atom · physiology: photosynthesis · Cucumis sativus (cucumber)Positive and negative results
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selenium atom · growth · Cucumis sativus (cucumber)Results agree
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- positive
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See all 6 papers →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.