Paper · 1990 · HortScience

EFFECTS OF SPECTRAL FILTERS ON GROWTH OF DENDRANTHEMA GRANDIFLORA (TZELEV.)

M.J. McMahon; J.W. Kelly

7
claims
14
verbatim quotes
1
citations
3
research areas
✓
Open access

Abstract

`Spears' (nonpinched and pinched) and `Yellow Mandalay' (pinched) chrysanthemums were grown in growth chambers equipped with clear, double-walled polycarbonate panels filled with liquids that served as spectral filters. A blue dye raised FR/R by filtering out a portion of red light. A solution of CuSO4 lowered FR/R by absorbing a greater portion of far-red than red light. A red dye absorbed much of the blue/green portion of the light spectrum but did not change far-red to red (FR/R) light ratio. Two controls (H 2 O and air) were used. FR/R values were 1.01 for blue dye, 0.34 for CuSO 4 , and 0.86 for air, H 2 O, and red dye. FR and R were measured at 725-730 and 655-660nm, respectively. All plants grown under CuSO 4 filters had reduced height, reduced internode length, and increased chlorophyll content compared to controls. Red dye filtered pinched plants had decreased chlorophyll compared to controls. Pinched plants grown under CuSO 4 filters and long days developed fewer nodes than controls due to the formation of abnormal capitula. The controls and other treatments developed more nodes before producing similar capitula. Stem diameter and leaf area of controls did not differ from blue dye, red dye, or CuSO 4 filter treatments.

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

CuSO4 filters reduced chrysanthemum height versus controls.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
CuSO 4 filterse0
Outcome
heighte0
Direction
reducede0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“All plants grown under CuSO 4 filters had reduced height, reduced internode length, and increased chlorophyll content compared to controls.”

✓ located verbatim in the source · abstract, characters 696–835 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

CuSO4 filters reduced chrysanthemum internode length versus controls.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
CuSO 4 filterse0
Outcome
internode lengthe0
Direction
reducede0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“All plants grown under CuSO 4 filters had reduced height, reduced internode length, and increased chlorophyll content compared to controls.”

✓ located verbatim in the source · abstract, characters 696–835 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

CuSO4 filters increased chrysanthemum chlorophyll content versus controls.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
CuSO 4 filterse0
Outcome
chlorophyll contente0
Direction
increasede0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“All plants grown under CuSO 4 filters had reduced height, reduced internode length, and increased chlorophyll content compared to controls.”

✓ located verbatim in the source · abstract, characters 696–835 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Red dye filters decreased chlorophyll in pinched chrysanthemums versus controls.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
Red dyee0
Outcome
chlorophylle0
Direction
decreasede0
Qualifier
pinched plantse0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Red dye filtered pinched plants had decreased chlorophyll compared to controls.”

✓ located verbatim in the source · abstract, characters 836–915 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pinched chrysanthemums under CuSO4 filters and long days formed fewer nodes than controls because of abnormal capitula.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
CuSO 4 filters and long dayse0
Outcome
nodese0
Direction
fewere0
Qualifier
formation of abnormal capitulae0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Pinched plants grown under CuSO 4 filters and long days developed fewer nodes than controls due to the formation of abnormal capitula.”

✓ located verbatim in the source · abstract, characters 916–1050 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Control and other treatments formed more nodes before similar capitula than pinched CuSO4-filtered plants.

Taxon
chrysanthemumsChrysanthemumt0
Outcome
nodes before producing similar capitulae0
Direction
moree0
Comparator
other treatmentse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The controls and other treatments developed more nodes before producing similar capitula.”

✓ located verbatim in the source · abstract, characters 1051–1140 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Stem diameter and leaf area did not differ between controls and blue, red, or CuSO4 filter treatments.

Taxon
chrysanthemumsChrysanthemumt0
Treatment
blue dye, red dye, or CuSO 4 filter treatmentse0
Outcome
Stem diameter and leaf areae0
Direction
did not differe0
Comparator
controlse0

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

Chrysanthemum
Chrysanthemum · Taxon · picture from its Wikimedia Commons categoryLucia Condac · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Stem diameter and leaf area of controls did not differ from blue dye, red dye, or CuSO 4 filter treatments.”

✓ located verbatim in the source · abstract, characters 1141–1248 · show in text ↑
t0

“chrysanthemums were grown”

✓ located verbatim in the source · abstract, characters 66–91 · show in text ↑

copper(II) sulfate · growth · ChrysanthemumPositive and negative results

10 papers: 4 positive, 6 negative or no effect

5 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

copper(II) sulfate · physiology: pigments · ChrysanthemumResults 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 →

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.