Abstract
During seedling production, growth control of seedlings is an important problem because the overgrowth of seedlings causes a decrease of seedling quality and has disadvantages after transplanting. In this study, we aim to evaluate the possibility of replacing chemical plant growth regulators using light quality in a closed-type plant production system (CPPS) for cucumber seedling production. We used various light treatments, such as monochromatic or combined red (R) and blue (B), and combined R and B with UV-A or Far-red (Fr) light, to compare with a chemical plant growth regulator conventionally using in nursery farms. The combined R and B treatment decreased stem elongation and increased dry matter and compactness. UV-A treatment increased compactness but did not significantly affect the stem elongation or dry matter. Fr increased stem elongation and stem diameter and decreased compactness and dry matter. In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index. Fr treatments increased leaf area and leaf shape index and decreased specific leaf weight (SLW) and SPAD values. Cucumber seedlings have many different morphological changes, and R5B5 light quality was more effective in growth control due to higher compactness than chemical plant growth regulators. Also, R5B5 light quality has increased seedling quality, such as dry matter and SLW compared with fluorescent lamps. Thus, the use of light quality is a possible alternative to a chemical plant growth regulator.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 15
Claim · model-written summary
Combined red and blue light decreased stem elongation of cucumber seedlings.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- combined R and B treatmente1
- Outcome
- stem elongatione1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e1“The combined R and B treatment decreased stem elongation and increased dry matter and compactness”
Claim · model-written summary
Combined red and blue light increased dry matter and compactness of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- combined R and B treatmente1
- Outcome
- dry matter and compactnesse1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e1“The combined R and B treatment decreased stem elongation and increased dry matter and compactness”
Claim · model-written summary
UV-A light increased compactness of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- UV-A treatmente2
- Outcome
- compactnesse2
- Direction
- increasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e2“UV-A treatment increased compactness but did not significantly affect the stem elongation or dry matter”
Claim · model-written summary
UV-A light did not significantly affect stem elongation or dry matter of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- UV-A treatmente2
- Outcome
- stem elongation or dry mattere2
- Direction
- did not significantly affecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e2“UV-A treatment increased compactness but did not significantly affect the stem elongation or dry matter”
Claim · model-written summary
Far-red light increased stem elongation and stem diameter of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Fre3
- Outcome
- stem elongation and stem diametere3
- Direction
- increasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e3“Fr increased stem elongation and stem diameter and decreased compactness and dry matter”
Claim · model-written summary
Far-red light decreased compactness and dry matter of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Fre3
- Outcome
- compactness and dry mattere3
- Direction
- decreasede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e3“Fr increased stem elongation and stem diameter and decreased compactness and dry matter”
Claim · model-written summary
Combined red and blue light increased leaf area, specific leaf weight and SPAD value of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- combined R and B treatmentse4
- Outcome
- leaf area, specific leaf weight, and SPAD valuee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e4“In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index”
Claim · model-written summary
UV-A light increased leaf area, specific leaf weight and SPAD value of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- UV-A treatmentse4
- Outcome
- leaf area, specific leaf weight, and SPAD valuee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e4“In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index”
Claim · model-written summary
Combined red and blue light decreased leaf shape index of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- combined R and B treatmentse4
- Outcome
- leaf shape indexe4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e4“In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index”
Claim · model-written summary
UV-A light decreased leaf shape index of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- UV-A treatmentse4
- Outcome
- leaf shape indexe4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e4“In leaf growth, combined R and B treatments and UV-A treatments increased leaf area, specific leaf weight, and SPAD value, and decreased leaf shape index”
Claim · model-written summary
Far-red light increased leaf area and leaf shape index of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Fr treatmentse5
- Outcome
- leaf area and leaf shape indexe5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e5“Fr treatments increased leaf area and leaf shape index and decreased specific leaf weight (SLW) and SPAD values”
Claim · model-written summary
Far-red light decreased specific leaf weight and SPAD values of cucumber seedlings.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- Fr treatmentse5
- Outcome
- specific leaf weight (SLW) and SPAD valuese5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e5“Fr treatments increased leaf area and leaf shape index and decreased specific leaf weight (SLW) and SPAD values”
Claim · model-written summary
Red and blue light R5B5 was more effective for growth control of cucumber seedlings than chemical plant growth regulators because of higher compactness.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- R5B5 light qualitye6
- Outcome
- growth controle6
- Direction
- more effectivee6
- Qualifier
- higher compactnesse6
- Comparator
- chemical plant growth regulatorse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e6“R5B5 light quality was more effective in growth control due to higher compactness than chemical plant growth regulators”
Claim · model-written summary
R5B5 light quality increased seedling quality of cucumber compared with fluorescent lamps.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- R5B5 light qualitye7
- Outcome
- seedling qualitye7
- Direction
- increasede7
- Comparator
- fluorescent lampse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e7“R5B5 light quality has increased seedling quality, such as dry matter and SLW compared with fluorescent lamps”
Claim · model-written summary
Light quality is a possible alternative to chemical plant growth regulators for cucumber seedling production.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- use of light quality is a possible alternative to a chemical plant growth regulatore7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for cucumber seedling production”
e7“Thus, the use of light quality is a possible alternative to a chemical plant growth regulator”
The same questions in other papers
boron atom · growth · Cucumis sativus (cucumber)Positive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
7 papers more in this group
See all 11 papers →uv · growth · Cucumis sativus (cucumber)Results differ
28 papers in the same direction as this paper · 10 in the opposite direction
- positive
- negative
- positive
35 papers more in this group
See all 39 papers →light · control · Cucumis sativus (cucumber)Results agree
1 paper in the same direction as this paper
- positive
light · quality: general · Cucumis sativus (cucumber)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.