Abstract
Stevia is a natural source of high-intensity sweeteners, collectively known as steviol glycosides (SG), which are approximately 300 times sweeter than sucrose and widely used as sugar substitutes. This study examines the impact of five different red-to-blue (R:B) light ratios on SG content and yield in hydroponic Stevia across four growth stages. Results indicate that the highest and lowest leaf dry weights were recorded in the R1B0 (R:B = 1:0) and R0B1 (R:B = 0:1) groups, at 2.88 and 1.98 g/plant, respectively, reflecting a 45.45% difference. The total SG content in dried leaves was highest in R0B1 (196.32 mg/g) and lowest in R1B0 (115.16 mg/g), with a 70.48% variation. The highest and lowest total SG yields (YSG) per square meter were observed in R0B1 (46.56 g/m2) and R50B37 (35.70 g/m2), differing by 30.42%. Stage-specific optimal YSG values were identified, with designated growth stages P1 (early vegetative growth phase), P2 (early leaf development phase), and P3 (late leaf development phase) favoring R4B1 and P4 (leaf senescence phase) favoring R0B1. These findings suggest an optimized lighting strategy for the four growth stages of hydroponic Stevia, sequentially applying R4B1, R4B1, R4B1 and R0B1 to enhance biomass accumulation and SG production at different developmental stages.
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Claims 9
Claim · model-written summary
R1B0 had the highest leaf dry weight, 2.88 g/plant.
SteviaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest and lowest leaf dry weights were recorded in the R1B0 (R:B = 1:0) and R0B1 (R:B = 0:1) groups, at 2.88 and 1.98 g/plant, respectively”
e1“These findings suggest an optimized lighting strategy for the four growth stages of hydroponic Stevia, sequentially applying R4B1, R4B1, R4B1 and R0B1 to enhance biomass accumulation and SG production at different developmental stages”
Claim · model-written summary
R0B1 had the lowest leaf dry weight, 1.98 g/plant.
Not reportedTaxon
Verbatim
e0“the highest and lowest leaf dry weights were recorded in the R1B0 (R:B = 1:0) and R0B1 (R:B = 0:1) groups, at 2.88 and 1.98 g/plant, respectively”
Claim · model-written summary
R0B1 produced the highest total SG content, 196.32 mg/g.
- Treatment
- R0B1e0
- Outcome
- total SG content in dried leavese0
- Direction
- higheste0
- Value
- 196.32 mg/ge0
- Comparator
- R1B0e0
Not reportedTaxon
Verbatim
e0“The total SG content in dried leaves was highest in R0B1 (196.32 mg/g) and lowest in R1B0 (115.16 mg/g)”
Claim · model-written summary
R1B0 produced the lowest total SG content, 115.16 mg/g.
- Treatment
- R1B0e0
- Outcome
- total SG content in dried leavese0
- Direction
- loweste0
- Value
- 115.16 mg/ge0
- Comparator
- R0B1e0
Not reportedTaxon
Verbatim
e0“The total SG content in dried leaves was highest in R0B1 (196.32 mg/g) and lowest in R1B0 (115.16 mg/g)”
Claim · model-written summary
R0B1 had the highest total SG yield per square meter, 46.56 g/m2.
- Treatment
- R0B1e0
- Outcome
- total SG yields (YSG) per square metere0
- Direction
- higheste0
- Value
- 46.56 g/m2e0
- Comparator
- R50B37e0
Not reportedTaxon
Verbatim
e0“The highest and lowest total SG yields (YSG) per square meter were observed in R0B1 (46.56 g/m2) and R50B37 (35.70 g/m2)”
Claim · model-written summary
R50B37 had the lowest total SG yield per square meter, 35.70 g/m2.
- Treatment
- R50B37e0
- Outcome
- total SG yields (YSG) per square metere0
- Direction
- loweste0
- Value
- 35.70 g/m2e0
- Comparator
- R0B1e0
Not reportedTaxon
Verbatim
e0“The highest and lowest total SG yields (YSG) per square meter were observed in R0B1 (46.56 g/m2) and R50B37 (35.70 g/m2)”
Claim · model-written summary
R4B1 favored optimal YSG in stages P1, P2, and P3.
- Organ / stage
- P1 (early vegetative growth phase), P2 (early leaf development phase), and P3 (late leaf development phase)e0
- Treatment
- R4B1e0
- Outcome
- optimal YSG valuese0
Not reportedTaxon
Verbatim
e0“Stage-specific optimal YSG values were identified, with designated growth stages P1 (early vegetative growth phase), P2 (early leaf development phase), and P3 (late leaf development phase) favoring R4B1”
Claim · model-written summary
R0B1 favored optimal YSG at the P4 leaf senescence phase.
Not reportedTaxon
Verbatim
e0“P4 (leaf senescence phase) favoring R0B1”
Claim · model-written summary
The authors suggest sequential R4B1, R4B1, R4B1, and R0B1 lighting across four growth stages.
- Outcome
- sequentially applying R4B1, R4B1, R4B1 and R0B1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These findings suggest an optimized lighting strategy for the four growth stages of hydroponic Stevia, sequentially applying R4B1, R4B1, R4B1 and R0B1 to enhance biomass accumulation and SG production at different developmental stages”