Abstract
The study investigated the effects of growth and quality of different varieties of lettuce under treatments:red LEDs(R),blue LEDs(B) and the LEDs combination of red and blue light(RB) by natural light as control(CK).The results showed that effect of four light treatments on root length,plant height,biomass and growth of four varieties of lettuce had the same variation trends.Compared with the control,plant fresh and dry weight,leaf area and root activity of R and RB treatments were greater,and B treatment was smaller.Soluble protein contents in plants of Yongrong(YR),Jinxiang(JX),and Gaohua(GH) under B were higher.Starch contents in plants of Lianji(LJ),JX,and GH under RB were higher.While starch and sucrose contents in plant of YR under R were the highest and soluble sugar contents under R and RB were the highest.Vc contents in plants of JX,YR and GH under B and RB were higher,while LJ under RB was higher and under R was lower.Total phenol contents in plants were no significant difference under light treatments.Nitrate content and sub-nitrite reductase activity in plant of LJ were sensitive to blue light.Blue light can reduce the contents of nitrate and sub-nitrite reductase activity;nitrate content and sub-nitrite reductase activity in plant of other variety were no significant difference.In summary,four variety of lettuce under light treatments is no significant difference.Red light and the combination red and blue light are benefit to growth of plant,and the combination red and blue light can improve the quality of lettuce.Red and blue light is the best light for culturing lettuce.
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Claims 15
Claim · model-written summary
Red and red-blue LEDs increased lettuce fresh and dry weights and leaf area relative to natural light.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- R and RB treatmentse0
- Outcome
- plant fresh and dry weight,leaf areae0
- Direction
- greatere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Compared with the control,plant fresh and dry weight,leaf area and root activity of R and RB treatments were greater”
Claim · model-written summary
Red and red-blue LEDs increased lettuce root activity relative to natural light.
- Taxon
- lettuceLactuca sativat0
- Treatment
- R and RB treatmentse0
- Outcome
- root activitye0
- Direction
- greatere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Compared with the control,plant fresh and dry weight,leaf area and root activity of R and RB treatments were greater”
Claim · model-written summary
Blue LEDs reduced lettuce fresh and dry weights, leaf area and root activity versus control.
- Taxon
- lettuceLactuca sativat0
- Treatment
- B treatmente0
- Outcome
- plant fresh and dry weight,leaf area and root activitye1
- Direction
- smallere0
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“and B treatment was smaller”
e1“Compared with the control,plant fresh and dry weight,leaf area and root activity”
Claim · model-written summary
Blue LEDs yielded higher soluble protein in Yongrong, Jinxiang and Gaohua.
- Taxon
- lettuceLactuca sativat0
- Material
- Yongrong(YR),Jinxiang(JX),and Gaohua(GH)e0
- Treatment
- Be0
- Outcome
- Soluble protein contentse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Soluble protein contents in plants of Yongrong(YR),Jinxiang(JX),and Gaohua(GH) under B were higher”
Claim · model-written summary
Red-blue LEDs yielded higher starch in Lianji, Jinxiang and Gaohua.
- Taxon
- lettuceLactuca sativat0
- Material
- Lianji(LJ),JX,and GHe0
- Treatment
- RBe0
- Outcome
- Starch contentse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Starch contents in plants of Lianji(LJ),JX,and GH under RB were higher”
Claim · model-written summary
Under red LEDs Yongrong had the highest starch and sucrose contents.
- Taxon
- lettuceLactuca sativat0
- Material
- YRe0
- Treatment
- Re0
- Outcome
- starch and sucrose contentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“starch and sucrose contents in plant of YR under R were the highest”
Claim · model-written summary
Under red and red-blue LEDs Yongrong soluble sugar contents were highest.
- Taxon
- lettuceLactuca sativat0
- Material
- YRe7
- Treatment
- R and RBe0
- Outcome
- soluble sugar contentse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“soluble sugar contents under R and RB were the highest”
e7“plant of YR under R”
Claim · model-written summary
Blue and red-blue LEDs increased vitamin C in Jinxiang, Yongrong and Gaohua.
- Taxon
- lettuceLactuca sativat0
- Material
- JX,YR and GHe0
- Treatment
- B and RBe0
- Outcome
- Vc contentse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Vc contents in plants of JX,YR and GH under B and RB were higher”
Claim · model-written summary
Red-blue LEDs increased vitamin C in Lianji.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“while LJ under RB was higher”
e7“Vc contents in plants of JX,YR and GH”
Claim · model-written summary
Red LEDs decreased vitamin C in Lianji.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“under R was lower”
e7“Vc contents in plants of JX,YR and GH under B and RB were higher,while LJ under RB was higher and under R was lower”
Claim · model-written summary
Total phenol contents did not differ significantly among light treatments.
- Taxon
- lettuceLactuca sativat0
- Treatment
- light treatmentse0
- Outcome
- Total phenol contentse0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Total phenol contents in plants were no significant difference under light treatments”
Claim · model-written summary
Blue light reduced nitrate content in Lianji.
- Taxon
- lettuceLactuca sativat0
- Material
- LJe7
- Treatment
- Blue lighte0
- Outcome
- contents of nitratee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Blue light can reduce the contents of nitrate and sub-nitrite reductase activity”
e7“nitrate content and sub-nitrite reductase activity in plant of LJ were sensitive to blue light”
Claim · model-written summary
Blue light reduced sub-nitrite reductase activity in Lianji.
- Taxon
- lettuceLactuca sativat0
- Material
- LJe7
- Treatment
- Blue lighte0
- Outcome
- sub-nitrite reductase activitye0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Blue light can reduce the contents of nitrate and sub-nitrite reductase activity”
e7“nitrate content and sub-nitrite reductase activity in plant of LJ were sensitive to blue light”
Claim · model-written summary
Other lettuce varieties did not differ significantly in nitrate content or sub-nitrite reductase activity.
- Taxon
- lettuceLactuca sativat0
- Treatment
- light treatmentse7
- Outcome
- nitrate content and sub-nitrite reductase activitye0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“nitrate content and sub-nitrite reductase activity in plant of other variety were no significant difference”
e7“four variety of lettuce under light treatments is no significant difference”
Claim · model-written summary
The authors recommend red-blue light for culturing lettuce.
- Taxon
- lettuceLactuca sativae0
- Outcome
- Red and blue lighte0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Effect of LED light source on the growth and quality of different lettuce varieties.”
e0“Red and blue light is the best light for culturing lettuce”
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