Paper · 1992 · Journal of Herbs Spices & Medicinal Plants

Light Quality, Growth, and Essential Oil in Dill (Anethum graveolensL.)

S. Hälvä; L. E. Craker; J. E. Simon; et al.

14
claims
27
verbatim quotes
14
citations
3
research areas
—
Not open access

Abstract

Abstract The effect of light quality on growth and essential oil production in dill herb was studied by comparing plants receiving supplemental red, far-red, and blue end-of-day light treatments with control plants not receiving any supplemental light treatment. No significant differenes were observed in biomass yield from end-of-day light treatments but control plants and blue light-treated plants had shorter internodes and produced relatively high herb yields. Far-red light induced internode growth, decreased leaf area, and increased the rate of plant development more than all other light treatments. Red light also increased plant growth and induced an elongation of the internodes. Essential oil concentration was highest in plants grown under far-red light treatments. Red light treatment for 4 h also induced more oil production than control and blue light treatments. When the dill plants were exposed to 4 h of red and far-red light yields of benzofuranoid, α-phellandrene, β-phellandrene, p-cymene, and other essential oil constituents, except for myristicin, were increased as compared with plants exposed to control, blue light, or 2 h light treatments. KEYWORDS: Red lightfar-red lightblue lightoil composition

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 14

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

End-of-day light treatments produced no significant difference in biomass yield.

Treatment
end-of-day light treatmentse0
Outcome
biomass yielde0
Comparator
control plantse1

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“No significant differenes were observed in biomass yield from end-of-day light treatments”

✓ located verbatim in the source · abstract, characters 263–352 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
e1

“control plants not receiving any supplemental light treatment”

✓ located verbatim in the source · abstract, characters 200–261 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Control dill plants had shorter internodes.

Treatment
control plantse0
Outcome
internodese0
Direction
shortere0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control plants and blue light-treated plants had shorter internodes”

✓ located verbatim in the source · abstract, characters 357–424 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Blue light-treated dill had shorter internodes.

Treatment
blue light-treated plantse0
Outcome
internodese0
Direction
shortere0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control plants and blue light-treated plants had shorter internodes”

✓ located verbatim in the source · abstract, characters 357–424 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Control dill plants produced relatively high herb yields.

Treatment
control plantse0
Outcome
herb yieldse0
Direction
relatively highe0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control plants and blue light-treated plants had shorter internodes and produced relatively high herb yields”

✓ located verbatim in the source · abstract, characters 357–465 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Blue light-treated dill produced relatively high herb yields.

Treatment
blue light-treated plantse0
Outcome
herb yieldse0
Direction
relatively highe0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“control plants and blue light-treated plants had shorter internodes and produced relatively high herb yields”

✓ located verbatim in the source · abstract, characters 357–465 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Far-red light induced dill internode growth more than other light treatments.

Treatment
Far-red lighte0
Outcome
internode growthe0
Direction
inducede0
Comparator
all other light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Far-red light induced internode growth, decreased leaf area, and increased the rate of plant development more than all other light treatments.”

✓ located verbatim in the source · abstract, characters 467–609 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Far-red light decreased dill leaf area.

Treatment
Far-red lighte0
Outcome
leaf areae0
Direction
decreasede0
Comparator
all other light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Far-red light induced internode growth, decreased leaf area, and increased the rate of plant development more than all other light treatments.”

✓ located verbatim in the source · abstract, characters 467–609 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Far-red light increased dill development rate more than other light treatments.

Treatment
Far-red lighte0
Outcome
rate of plant developmente0
Direction
increasede0
Comparator
all other light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Far-red light induced internode growth, decreased leaf area, and increased the rate of plant development more than all other light treatments.”

✓ located verbatim in the source · abstract, characters 467–609 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Red light increased dill plant growth.

Treatment
Red lighte0
Outcome
plant growthe0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Red light also increased plant growth and induced an elongation of the internodes.”

✓ located verbatim in the source · abstract, characters 610–692 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Red light induced dill internode elongation.

Treatment
Red lighte0
Outcome
elongation of the internodese0
Direction
inducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Red light also increased plant growth and induced an elongation of the internodes.”

✓ located verbatim in the source · abstract, characters 610–692 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Far-red light yielded the highest dill essential oil concentration.

Treatment
far-red light treatmentse0
Outcome
Essential oil concentratione0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Essential oil concentration was highest in plants grown under far-red light treatments.”

✓ located verbatim in the source · abstract, characters 693–780 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Four hours of red light induced more dill oil production than control and blue light.

Treatment
Red light treatment for 4 he0
Outcome
oil productione0
Direction
moree0
Comparator
control and blue light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Red light treatment for 4 h also induced more oil production than control and blue light treatments.”

✓ located verbatim in the source · abstract, characters 781–881 · show in text ↑
t0

“dill (Anethum graveolensL.)”

✓ located after whitespace/quote normalisation · title, characters 44–71 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Four hours of red light increased dill benzofuranoid, α-phellandrene and β-phellandrene yields relative to control, blue or two-hour light.

Treatment
4 h of red and far-red lighte0
Outcome
yields of benzofuranoid, α-phellandrene, β-phellandrenee0
Direction
increasede0
Comparator
control, blue light, or 2 h light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“When the dill plants were exposed to 4 h of red and far-red light yields of benzofuranoid, α-phellandrene, β-phellandrene, p-cymene, and other essential oil constituents, except for myristicin, were increased as compared with plants exposed to control, blue light, or 2 h light treatments.”

✓ located verbatim in the source · abstract, characters 882–1171 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Four hours of red and far-red light increased dill p-cymene and other essential oil constituent yields, except myristicin.

Treatment
4 h of red and far-red lighte0
Outcome
p-cymene, and other essential oil constituentse0
Direction
increasede0
Qualifier
except for myristicine0
Comparator
control, blue light, or 2 h light treatmentse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Anethum graveolens
Anethum graveolens · TaxonTepeyac · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“When the dill plants were exposed to 4 h of red and far-red light yields of benzofuranoid, α-phellandrene, β-phellandrene, p-cymene, and other essential oil constituents, except for myristicin, were increased as compared with plants exposed to control, blue light, or 2 h light treatments.”

✓ located verbatim in the source · abstract, characters 882–1171 · show in text ↑

light · quality: oil · Anethum graveolens (dill)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

light · yield · Anethum graveolens (dill)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

light · molecular: metabolites · Anethum graveolens (dill)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.