Abstract
To investigate the importance of light on healing and acclimatization, in the present study, grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R), a mixture of R (68%) and B (RB), or white (W; 35% B, 49% intermediate spectra, 16% R) LEDs for 12 days. Survival ratio, root and shoot growth, soluble carbohydrate content, photosynthetic pigments content, and photosynthetic performance were evaluated. Seedling survival was not only strongly limited in D but the survived seedlings had an inferior shoot and root development, reduced chlorophyll content, and attenuated photosynthetic efficiency. RB-exposed seedlings had a less-developed root system. R-exposed seedlings showed leaf epinasty, and had the smallest leaf area, reduced chlorophyll content, and suppressed photosynthetic apparatus performance. The R-exposed seedlings contained the highest amount of soluble carbohydrate and together with D-exposed seedlings the lowest amount of chlorophyll in their scions. B-exposed seedlings showed the highest chlorophyll content and improved overall PSII photosynthetic functioning. W-exposed seedling had the largest leaf area, and closely resembled the photosynthetic properties of RB-exposed seedlings. We assume that, during healing of grafted seedlings monochromatic R light should be avoided. Instead, W and monochromatic B light may be willingly adopted due to their promoting effect on shoot, pigments content, and photosynthetic efficiency.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
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Claims 16
Claim · model-written summary
Darkness strongly limited survival of grafted seedlings.
- Taxon
- watermelon seedlings
Citrullus lanatuse1 - Treatment
- darkness (D)e1
- Outcome
- Seedling survivale0
- Direction
- strongly limitede0
- Comparator
- lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seedling survival was not only strongly limited in D”
e1“grafted watermelon seedlings were exposed to darkness (D) or light”
Claim · model-written summary
Darkness impaired shoot and root development in surviving seedlings.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- darkness (D)e1
- Outcome
- shoot and root developmente0
- Direction
- inferiore0
- Comparator
- lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“survived seedlings had an inferior shoot and root development”
e1“grafted watermelon seedlings were exposed to darkness (D) or light”
Claim · model-written summary
Darkness reduced chlorophyll content and photosynthetic efficiency.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- darkness (D)e1
- Outcome
- chlorophyll content, and attenuated photosynthetic efficiencye0
- Direction
- reducede0
- Comparator
- lighte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced chlorophyll content, and attenuated photosynthetic efficiency”
e1“grafted watermelon seedlings were exposed to darkness (D) or light”
Claim · model-written summary
Red-blue light yielded a less developed root system.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- a mixture of R (68%) and B (RB)e1
- Outcome
- root systeme0
- Direction
- less-developede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RB-exposed seedlings had a less-developed root system”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R), a mixture of R (68%) and B (RB), or white (W; 35% B, 49% intermediate spectra, 16% R) LEDs”
Claim · model-written summary
Red light produced leaf epinasty.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- red (R)e1
- Outcome
- leaf epinastye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R-exposed seedlings showed leaf epinasty”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R)”
Claim · model-written summary
Red light produced the smallest leaf area.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- red (R)e1
- Outcome
- leaf areae0
- Direction
- smalleste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R-exposed seedlings showed leaf epinasty, and had the smallest leaf area”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R)”
Claim · model-written summary
Red light reduced chlorophyll content.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- red (R)e1
- Outcome
- chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R-exposed seedlings showed leaf epinasty, and had the smallest leaf area, reduced chlorophyll content”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R)”
Claim · model-written summary
Red light suppressed photosynthetic apparatus performance.
- Taxon
- watermelon seedlingsCitrullus lanatuse2
- Treatment
- red (R)e2
- Outcome
- photosynthetic apparatus performancee0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suppressed photosynthetic apparatus performance”
e1“R-exposed seedlings showed leaf epinasty”
e2“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R)”
Claim · model-written summary
Red light produced the highest soluble carbohydrate amount.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- red (R)e1
- Outcome
- amount of soluble carbohydratee0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R-exposed seedlings contained the highest amount of soluble carbohydrate”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R)”
Claim · model-written summary
Red and darkness treatments produced the lowest scion chlorophyll.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- R-exposed seedlingse0
- Outcome
- amount of chlorophyll in their scionse0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R-exposed seedlings contained the highest amount of soluble carbohydrate and together with D-exposed seedlings the lowest amount of chlorophyll in their scions”
e1“grafted watermelon seedlings were exposed to darkness (D) or light”
Claim · model-written summary
Blue light produced highest chlorophyll content.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- blue (B)e1
- Outcome
- chlorophyll contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B-exposed seedlings showed the highest chlorophyll content”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B)”
Claim · model-written summary
Blue light improved overall PSII photosynthetic functioning.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- blue (B)e1
- Outcome
- overall PSII photosynthetic functioninge0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B-exposed seedlings showed the highest chlorophyll content and improved overall PSII photosynthetic functioning”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B)”
Claim · model-written summary
White light produced largest leaf area.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- white (W; 35% B, 49% intermediate spectra, 16% R) LEDse1
- Outcome
- leaf areae0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“W-exposed seedling had the largest leaf area”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R), a mixture of R (68%) and B (RB), or white (W; 35% B, 49% intermediate spectra, 16% R) LEDs”
Claim · model-written summary
White and red-blue light yielded similar photosynthetic properties.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Treatment
- white (W; 35% B, 49% intermediate spectra, 16% R) LEDse1
- Outcome
- photosynthetic propertiese0
- Direction
- closely resemblede0
- Comparator
- a mixture of R (68%) and B (RB)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“W-exposed seedling had the largest leaf area, and closely resembled the photosynthetic properties of RB-exposed seedlings”
e1“grafted watermelon seedlings were exposed to darkness (D) or light, provided by blue (B), red (R), a mixture of R (68%) and B (RB), or white (W; 35% B, 49% intermediate spectra, 16% R) LEDs”
Claim · model-written summary
Authors recommend avoiding monochromatic red light during graft healing.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Outcome
- monochromatic R light should be avoidede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“during healing of grafted seedlings monochromatic R light should be avoided”
e1“grafted watermelon seedlings”
Claim · model-written summary
Authors recommend white and blue light for shoot, pigment and photosynthetic performance.
- Taxon
- watermelon seedlingsCitrullus lanatuse1
- Outcome
- W and monochromatic B light may be willingly adoptede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“W and monochromatic B light may be willingly adopted due to their promoting effect on shoot, pigments content, and photosynthetic efficiency”
e1“grafted watermelon seedlings”
The same questions in other papers
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See all 10 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.