Abstract
The aim of this study was to investigate the effects of green light, added with red and blue LEDs, on the growth, leaf microstructure and quality of spinach plants. Plants were transplanted and grown hydroponically for 30 days under different combinations of red:blue with a 4:1 ratio (R4B1), red:blue:green with a 5:2:3 ratio (R5B2G3) and red:blue:green with a 1:1:1 ratio (R1B1G1), at a 190 µmoL m−2·s−1 photosynthetic photon flux density (PPFD). The results showed that green light, added to red and blue LEDs at a reasonable ratio, could reduce the growth, leaf microstructure and quality of spinach plants, but not the organic acid content. The highest values for the growth parameters, photosynthetic pigments, leaf structure characteristics and quality of the spinach plant were observed for the R4B1 treatment, but not for the organic acid content. Therefore, our results suggest that green light added to red and blue LEDs at a reasonable ratio is not suitable for the growth of spinach.
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Claims 6
Claim · model-written summary
Adding green light reduced spinach growth relative to red and blue LEDs.
- Taxon
- spinach
Spinacia oleraceae0 - Treatment
- green light, added to red and blue LEDse0
- Outcome
- growthe0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light, added to red and blue LEDs at a reasonable ratio, could reduce the growth, leaf microstructure and quality of spinach plants”
Claim · model-written summary
Adding green light reduced spinach leaf microstructure and quality.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- green light, added to red and blue LEDse0
- Outcome
- leaf microstructure and qualitye0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light, added to red and blue LEDs at a reasonable ratio, could reduce the growth, leaf microstructure and quality of spinach plants”
Claim · model-written summary
Adding green light did not reduce spinach organic acid content.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- green light, added to red and blue LEDse0
- Outcome
- organic acid contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light, added to red and blue LEDs at a reasonable ratio, could reduce the growth, leaf microstructure and quality of spinach plants, but not the organic acid content”
Claim · model-written summary
R4B1 gave the highest spinach growth parameters and photosynthetic pigments.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- R4B1e0
- Outcome
- growth parameters, photosynthetic pigmentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values for the growth parameters, photosynthetic pigments, leaf structure characteristics and quality of the spinach plant were observed for the R4B1 treatment”
Claim · model-written summary
R4B1 gave the highest spinach leaf structure characteristics and quality.
- Taxon
- spinachSpinacia oleraceae0
- Treatment
- R4B1e0
- Outcome
- leaf structure characteristics and qualitye0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest values for the growth parameters, photosynthetic pigments, leaf structure characteristics and quality of the spinach plant were observed for the R4B1 treatment”
Claim · model-written summary
The authors advise against adding green light to red and blue LEDs for spinach growth.
- Taxon
- spinachSpinacia oleraceae0
- Outcome
- not suitable for the growth of spinache0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“green light added to red and blue LEDs at a reasonable ratio is not suitable for the growth of spinach”
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