Abstract
The present research aims at evaluating the effect of silicon on the photosynthetic rate and the chlorophyll fluorescence parameters of hydroponically grown young cucumber plants (Cucumis sativus L.), cv. Gergana, under salinity stress. The experiment was conducted in a climatic chamber at the Department of Plant Physiology and Biochemistry, Agricultural University – Plovdiv. Four variants were examined: 1 – control, 2 – NaCl, 3 – Si, and 4 – NaCl + Si. Plants were grown in a nutrient solution and were treated with 50 mM NaCl and 1.5 mM Si in form of Na2SiO3. The results showed a decrease in the photosynthetic rate by 25% for the NaCl variant compared to the control. Silicon supply increased the photosynthetic rate of the salt-stressed plants by 17%. Salinity had also a negative effect on of the chlorophyll fluorescence parameters and the content of photosynthetic pigments, which were dramatically reduced. It was established that the silicon supply had a positive influence on the photosynthetic rate, the chlorophyll fluorescence parameters and the pigment content of the treated cucumber plants. The content of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids increased.
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Claims 5
Claim · model-written summary
NaCl reduced cucumber photosynthetic rate by 25% relative to control.
- Taxon
- young cucumber plants (Cucumis sativus L.)
Cucumis sativust0 - Treatment
- NaCl variante0
- Outcome
- photosynthetic ratee0
- Direction
- decreasee0
- Value
- 25%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed a decrease in the photosynthetic rate by 25% for the NaCl variant compared to the control.”
t0“young cucumber plants (Cucumis sativus L.)”
Claim · model-written summary
Silicon increased photosynthetic rate of salt-stressed cucumber plants by 17%.
- Taxon
- young cucumber plants (Cucumis sativus L.)Cucumis sativust0
- Treatment
- Silicon supplye0
- Outcome
- photosynthetic ratee0
- Direction
- increasede0
- Value
- 17%e0
- Comparator
- salt-stressed plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Silicon supply increased the photosynthetic rate of the salt-stressed plants by 17%.”
t0“young cucumber plants (Cucumis sativus L.)”
Claim · model-written summary
Salinity reduced cucumber chlorophyll fluorescence parameters and photosynthetic pigment content.
- Taxon
- young cucumber plants (Cucumis sativus L.)Cucumis sativust0
- Treatment
- Salinitye0
- Outcome
- chlorophyll fluorescence parameters and the content of photosynthetic pigmentse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity had also a negative effect on of the chlorophyll fluorescence parameters and the content of photosynthetic pigments, which were dramatically reduced.”
t0“young cucumber plants (Cucumis sativus L.)”
Claim · model-written summary
Silicon improved chlorophyll fluorescence parameters and pigment content in treated cucumber plants.
- Taxon
- young cucumber plants (Cucumis sativus L.)Cucumis sativust0
- Treatment
- silicon supplye0
- Outcome
- chlorophyll fluorescence parameters and the pigment contente0
- Direction
- positive influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was established that the silicon supply had a positive influence on the photosynthetic rate, the chlorophyll fluorescence parameters and the pigment content of the treated cucumber plants.”
t0“young cucumber plants (Cucumis sativus L.)”
Claim · model-written summary
Chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids increased in silicon-treated cucumber plants.
- Taxon
- young cucumber plants (Cucumis sativus L.)Cucumis sativust0
- Treatment
- silicon supplye0
- Outcome
- chlorophyll a, chlorophyll b, total chlorophyll, and carotenoidse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the silicon supply had a positive influence on the photosynthetic rate, the chlorophyll fluorescence parameters and the pigment content of the treated cucumber plants. The content of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids increased.”
t0“young cucumber plants (Cucumis sativus L.)”
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