Abstract
The lettuces of red, purple and green leaves were planted with hydroponics, and the influences of UV radiation on the spectral absorbance, growth and nutritional quality of the lettuces were studied. The results showed that for the three leaf-color lettuce cultivars under UV radiation and blank control, the photosynthetic pigments spectral absorbance values were high and changed drastically in the spectrum of 330-500 nm and 640-690 nm, and were low and changed smoothly in the spectrum of 500-640 nm and 690-800 nm. For the contents of chlorophylla and total photosynthetic pigment, the green lettuce under UV radiation was not remarkably different from the reference, in contrast, the red lettuce increased significantly, but the purple lettuce increased notably only under UV-B radiation. The treatment of UV radiation significantly decreased the shoot fresh weight of the green lettuce, while remarkably reduced that of the purple lettuce, but didn't make that of the red lettuce notably different. The shoot dry weights of the three leaf-color lettuces were lowered greatly under UV radiation. The concentration of phenol for the green lettuce lessened distinctly under UV radiation, but it didn't differ greatly for the purple lettuce. The concentration of phenol for the red lettuce increased remarkably only under UV-B. The treatment of UV radiation significantly reduced the concentration of flavonoid for the green lettuce,but didn't change those of the red and purple lettuces greatly. However, the treatment didn't change the concentration of anthocyaninfor the green lettuce, but enhanced those of the red and purple lettuces greatly. The concentration of soluble sugar for the green lettuce increased notably under UV radiation, and that of the red lettuce was the contrary. But the concentration of soluble sugar for the purple lettuce enhanced greatly only under UV-A radiation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 18
Claim · model-written summary
Lettuce pigments had high variable absorbance at 330-500 and 640-690 nm and low smooth absorbance at 500-640 and 690-800 nm.
- Taxon
- Lettuce
Lactuca sativat0 - Outcome
- photosynthetic pigments spectral absorbance valuese0
- Direction
- high and changed drasticallye0
- Value
- 330-500 nm and 640-690 nme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“the photosynthetic pigments spectral absorbance values were high and changed drastically in the spectrum of 330-500 nm and 640-690 nm, and were low and changed smoothly in the spectrum of 500-640 nm and 690-800 nm”
t0“Lettuce”
Claim · model-written summary
chlorophylla and total photosynthetic pigment in green lettuce was not remarkably different under UV radiation and blank control.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- UV radiatione0
- Outcome
- chlorophylla and total photosynthetic pigmente0
- Direction
- not remarkably differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For the contents of chlorophylla and total photosynthetic pigment, the green lettuce under UV radiation was not remarkably different from the reference, in contrast, the red lettuce increased significantly, but the purple lettuce increased notably only under UV-B radiation.”
t0“Lettuce”
Claim · model-written summary
chlorophylla and total photosynthetic pigment in red lettuce was increased significantly under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red lettucee0
- Treatment
- UV radiatione0
- Outcome
- chlorophylla and total photosynthetic pigmente0
- Direction
- increased significantlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For the contents of chlorophylla and total photosynthetic pigment, the green lettuce under UV radiation was not remarkably different from the reference, in contrast, the red lettuce increased significantly, but the purple lettuce increased notably only under UV-B radiation.”
t0“Lettuce”
Claim · model-written summary
chlorophylla and total photosynthetic pigment in purple lettuce was increased notably under UV-B radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- purple lettucee0
- Treatment
- UV-B radiatione0
- Outcome
- chlorophylla and total photosynthetic pigmente0
- Direction
- increased notablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“For the contents of chlorophylla and total photosynthetic pigment, the green lettuce under UV radiation was not remarkably different from the reference, in contrast, the red lettuce increased significantly, but the purple lettuce increased notably only under UV-B radiation.”
t0“Lettuce”
Claim · model-written summary
shoot fresh weight in green lettuce was significantly decreased under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- UV radiatione0
- Outcome
- shoot fresh weighte0
- Direction
- significantly decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The treatment of UV radiation significantly decreased the shoot fresh weight of the green lettuce, while remarkably reduced that of the purple lettuce, but didn't make that of the red lettuce notably different.”
t0“Lettuce”
Claim · model-written summary
shoot fresh weight in purple lettuce was remarkably reduced under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- purple lettucee0
- Treatment
- UV radiatione0
- Outcome
- shoot fresh weighte0
- Direction
- remarkably reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The treatment of UV radiation significantly decreased the shoot fresh weight of the green lettuce, while remarkably reduced that of the purple lettuce, but didn't make that of the red lettuce notably different.”
t0“Lettuce”
Claim · model-written summary
shoot fresh weight in red lettuce was notably different under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red lettucee0
- Treatment
- UV radiatione0
- Outcome
- shoot fresh weighte0
- Direction
- notably differente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The treatment of UV radiation significantly decreased the shoot fresh weight of the green lettuce, while remarkably reduced that of the purple lettuce, but didn't make that of the red lettuce notably different.”
t0“Lettuce”
Claim · model-written summary
shoot dry weights in three leaf-color lettuces was lowered greatly under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- three leaf-color lettucese0
- Treatment
- UV radiatione0
- Outcome
- shoot dry weightse0
- Direction
- lowered greatlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The shoot dry weights of the three leaf-color lettuces were lowered greatly under UV radiation.”
t0“Lettuce”
Claim · model-written summary
concentration of phenol in green lettuce was lessened distinctly under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- UV radiatione0
- Outcome
- concentration of phenole0
- Direction
- lessened distinctlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of phenol for the green lettuce lessened distinctly under UV radiation, but it didn't differ greatly for the purple lettuce.”
t0“Lettuce”
Claim · model-written summary
concentration of phenol in purple lettuce was didn't differ greatly under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- purple lettucee0
- Treatment
- UV radiatione0
- Outcome
- concentration of phenole0
- Direction
- didn't differ greatlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of phenol for the green lettuce lessened distinctly under UV radiation, but it didn't differ greatly for the purple lettuce.”
t0“Lettuce”
Claim · model-written summary
concentration of phenol in red lettuce was increased remarkably under UV-B.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red lettucee0
- Treatment
- UV-Be0
- Outcome
- concentration of phenole0
- Direction
- increased remarkablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of phenol for the red lettuce increased remarkably only under UV-B.”
t0“Lettuce”
Claim · model-written summary
concentration of flavonoid in green lettuce was significantly reduced under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- UV radiatione0
- Outcome
- concentration of flavonoide0
- Direction
- significantly reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The treatment of UV radiation significantly reduced the concentration of flavonoid for the green lettuce,but didn't change those of the red and purple lettuces greatly.”
t0“Lettuce”
Claim · model-written summary
concentration of flavonoid in red and purple lettuces was didn't change under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red and purple lettucese0
- Treatment
- UV radiatione0
- Outcome
- concentration of flavonoide0
- Direction
- didn't changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The treatment of UV radiation significantly reduced the concentration of flavonoid for the green lettuce,but didn't change those of the red and purple lettuces greatly.”
t0“Lettuce”
Claim · model-written summary
concentration of anthocyanin in green lettuce was didn't change under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- the treatmente0
- Outcome
- concentration of anthocyanine0
- Direction
- didn't changee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“However, the treatment didn't change the concentration of anthocyaninfor the green lettuce, but enhanced those of the red and purple lettuces greatly.”
t0“Lettuce”
Claim · model-written summary
concentration of anthocyanin in red and purple lettuces was enhanced under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red and purple lettucese0
- Treatment
- the treatmente0
- Outcome
- concentration of anthocyanine0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“However, the treatment didn't change the concentration of anthocyaninfor the green lettuce, but enhanced those of the red and purple lettuces greatly.”
t0“Lettuce”
Claim · model-written summary
concentration of soluble sugar in green lettuce was increased notably under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- green lettucee0
- Treatment
- UV radiatione0
- Outcome
- concentration of soluble sugare0
- Direction
- increased notablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of soluble sugar for the green lettuce increased notably under UV radiation, and that of the red lettuce was the contrary.”
t0“Lettuce”
Claim · model-written summary
concentration of soluble sugar in red lettuce was the contrary under UV radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- red lettucee0
- Treatment
- UV radiatione0
- Outcome
- concentration of soluble sugare0
- Direction
- the contrarye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The concentration of soluble sugar for the green lettuce increased notably under UV radiation, and that of the red lettuce was the contrary.”
t0“Lettuce”
Claim · model-written summary
concentration of soluble sugar in purple lettuce was enhanced greatly under UV-A radiation.
- Taxon
- Lettuce
Lactuca sativat0 - Material
- purple lettucee0
- Treatment
- UV-A radiatione0
- Outcome
- concentration of soluble sugare0
- Direction
- enhanced greatlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“But the concentration of soluble sugar for the purple lettuce enhanced greatly only under UV-A radiation.”
t0“Lettuce”
The same questions in other papers
uv · quality: phytochemicals · Lactuca sativa (garden lettuce)Results differ
23 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
24 papers more in this group
See all 28 papers →uv · growth · Lactuca sativa (garden lettuce)Results differ
19 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 papers →uv · physiology: photosynthesis · Lactuca sativa (garden lettuce)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- negative
- no effect
- no effect
6 papers more in this group
See all 10 papers →uv · physiology: osmolytes · Lactuca sativa (garden lettuce)Results agree
1 paper in the same direction as this paper
- positive
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.