Abstract
Abstract Light plays a vital role on the growth and development of plant. On the base of white light with high color rendering to the benefit of human survival and life, we proposed to improve “color rendering” of LED lighting for accelerating the growth of lettuce. Seven spectral LED lights were adopted to irradiate the lettuces under 150 μmol·m −2 ·s −1 for a 16 hd −1 photoperiod. The leaf area and number profiles, plant biomass, and photosynthetic rate under the as-prepared LED light treatments were investigated. We let the absorption spectrum of fresh leaf be the emission spectrum of ideal light and then evaluate the “color rendering” of as-prepared LED lights by the Pearson product-moment correlation coefficient and CIE chromaticity coordinates. Under the irradiation of red-yellow-blue light with high correlation coefficient of 0.587, the dry weights and leaf growth rate are 2–3 times as high as the sharp red-blue light. The optimized LED light for lettuce growth can be presumed to be limited to the angle (about 75°) between the vectors passed through the ideal light in the CIE chromaticity coordinates. These findings open up a new idea to assess and find the optimized LED light for plant growth.
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 3
Claim · model-written summary
Red-yellow-blue LED light gave lettuce dry weights and leaf growth rates 2–3 times as high as sharp red-blue light.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- red-yellow-blue lighte1
- Outcome
- dry weights and leaf growth ratee1
- Direction
- as high ase1
- Value
- 2–3 timese1
- Comparator
- sharp red-blue lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Under the irradiation of red-yellow-blue light with high correlation coefficient of 0.587, the dry weights and leaf growth rate are 2–3 times as high as the sharp red-blue light”
t0“for the growth of lettuce”
Claim · model-written summary
The color rendering evaluation of the red-yellow-blue LED light gave a correlation coefficient of 0.587.
- Taxon
- lettuceLactuca sativat0
- Outcome
- correlation coefficiente1
- Value
- 0.587e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“with high correlation coefficient of 0.587”
t0“for the growth of lettuce”
Claim · model-written summary
The optimized LED light for lettuce growth may be limited to an angle of about 75° between vectors through the ideal light in CIE chromaticity coordinates.
- Taxon
- lettuceLactuca sativat0
- Outcome
- the anglee2
- Value
- about 75°e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The optimized LED light for lettuce growth can be presumed to be limited to the angle (about 75°) between the vectors passed through the ideal light in the CIE chromaticity coordinates”
t0“for the growth of lettuce”
The same questions in other papers
light · growth · Lactuca sativa (garden lettuce)Positive and negative results
242 papers in the same direction as this paper · 54 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- positive
- positive
296 papers more in this group
See all 300 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.