Abstract
Abstract The increasing demand for leafy greens shifted their year-round production towards indoor systems. In order to be marketable leafy greens, such as lettuce, must be visually attractive and provide high nutritional value and health benefits. These quality attributes depend on various light-driven processes, including physiological performance, metabolism, growth and the characteristics of the cultivar, among other factors. In our research, we analyzed the quality attributes (e.g., growth, firmness, element and pigment contents, antioxidant capacity) of two looseleaf lettuce ( Lactuca sativa L.) cultivars, green and red leaf lettuce grown under far-red (1st experiment) and red- (2nd experiment) enriched artificial LED lighting. Unlike other studies, we not only considered the preset LED- and cultivar-wise plant groups but also those created by a K-means clustering algorithm. Hereby, we assessed the preset conditions and captured more subtle differences that would otherwise be masked by the natural variation in the plants’ performances. We found that an increased ratio of far-red and red photons in the light recipe may enhance lettuce growth but with significant variability related to other quality attributes that may accompany the growth and development of the plants. In some cases, there was a trade-off between growth and other quality attributes, while in other cases, these two changed in parallel because of the characteristics of the cultivar. We also observed that both red and far-red light enrichment conditions increased axillary pigment production in lettuce providing superior nutritional quality.
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
An increased ratio of far-red to red photons in the light recipe may enhance lettuce growth.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- increased ratio of far-red and red photons in the light recipee0
- Outcome
- lettuce growthe0
- Direction
- enhancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increased ratio of far-red and red photons in the light recipe may enhance lettuce growth”
Claim · model-written summary
In some cases there was a trade-off between lettuce growth and other quality attributes, while in other cases they changed in parallel because of cultivar characteristics.
- Taxon
- LettuceLactuca sativat0
- Material
- cultivare0
- Outcome
- trade-off between growth and other quality attributese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In some cases, there was a trade-off between growth and other quality attributes, while in other cases, these two changed in parallel because of the characteristics of the cultivar”
t0“Indoor Lettuce”
Claim · model-written summary
Both red and far-red light enrichment increased axillary pigment production in lettuce.
- Taxon
- lettuceLactuca sativae0
- Treatment
- red and far-red light enrichment conditionse0
- Outcome
- axillary pigment productione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both red and far-red light enrichment conditions increased axillary pigment production in lettuce”
The same questions in other papers
photon · growth · Lactuca sativa (garden lettuce)Positive and negative results
6 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
4 papers more in this group
See all 8 papers →light · physiology: pigments · Lactuca sativa (garden lettuce)Positive and negative results
43 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- negative
48 papers more in this group
See all 52 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.