Paper · 1966 · Physiologia Plantarum

Chlorophyll Formation in Excised Roots of Cucumber and Pea

L. O. Björn; Ingegerd Odhelius

8
claims
8
verbatim quotes
20
citations
1
research areas
—
Not open access

Abstract

Abstract The effects of red and blue light on the formation of chlorophyll in excised roots of cucumber and pea was investigated and compared with previously reported experiments on wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed. and in blue light a considerable amount of chlorophyll is produced. Roots of cucumber and pea differ from those of wheat, in that red light is ineffective (or nearly so) even when combined with blue.

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Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Cucumber roots formed little or no chlorophyll in continuous red light.

Taxon
cucumberCucumis sativuse0
Organ / stage
rootse0
Treatment
red lighte0
Outcome
chlorophylle0
Direction
no or very littlee0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“roots of cucumber and pea was investigated and compared with previously reported experiments on wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed”

✓ located verbatim in the source · abstract, characters 86–303 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Pea roots formed little or no chlorophyll in continuous red light.

Organ / stage
rootse0
Treatment
red lighte0
Outcome
chlorophylle0
Direction
no or very littlee0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“roots of cucumber and pea was investigated and compared with previously reported experiments on wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed”

✓ located verbatim in the source · abstract, characters 86–303 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Wheat roots formed little or no chlorophyll in continuous red light.

Organ / stage
rootse0
Treatment
red lighte0
Outcome
chlorophylle0
Direction
no or very littlee0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed”

✓ located verbatim in the source · abstract, characters 182–303 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cucumber roots produced considerable chlorophyll in blue light.

Taxon
cucumberCucumis sativuse0
Organ / stage
rootse0
Treatment
blue lighte0
Outcome
chlorophylle0
Direction
a considerable amounte0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“roots of cucumber and pea was investigated and compared with previously reported experiments on wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed. and in blue light a considerable amount of chlorophyll is produced”

✓ located verbatim in the source · abstract, characters 86–371 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pea roots produced considerable chlorophyll in blue light.

Organ / stage
rootse0
Treatment
blue lighte0
Outcome
chlorophylle0
Direction
a considerable amounte0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“roots of cucumber and pea was investigated and compared with previously reported experiments on wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed. and in blue light a considerable amount of chlorophyll is produced”

✓ located verbatim in the source · abstract, characters 86–371 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Wheat roots produced considerable chlorophyll in blue light.

Organ / stage
rootse0
Treatment
blue lighte0
Outcome
chlorophylle0
Direction
a considerable amounte0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“wheat roots. All three kinds of roots are similar in that in continuous red light no or very little chlorophyll is formed. and in blue light a considerable amount of chlorophyll is produced”

✓ located verbatim in the source · abstract, characters 182–371 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Red light was ineffective for cucumber roots even with blue light.

Taxon
cucumberCucumis sativuse0
Organ / stage
rootse0
Treatment
red lighte0
Outcome
ineffectivee0
Direction
ineffective (or nearly so)e0

Not reportedComparator

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

Cucumis sativus
Cucumis sativus · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Roots of cucumber and pea differ from those of wheat, in that red light is ineffective (or nearly so) even when combined with blue”

✓ located verbatim in the source · abstract, characters 373–503 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Red light was ineffective for pea roots even with blue light.

Organ / stage
rootse0
Treatment
red lighte0
Outcome
ineffectivee0
Direction
ineffective (or nearly so)e0

Not reportedComparator

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

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Roots of cucumber and pea differ from those of wheat, in that red light is ineffective (or nearly so) even when combined with blue”

✓ located verbatim in the source · abstract, characters 373–503 · show in text ↑

light · physiology: pigments · Triticum aestivum (wheat)Results differ

22 papers: 13 positive, 9 negative or no effect

12 papers in the same direction as this paper · 9 in the opposite direction

  1. negative
  2. negative
  3. negative

18 papers more in this group

See all 22 papers →

light · physiology: pigments · Lathyrus oleraceus (pea)Positive and negative results

19 papers: 15 positive, 4 negative or no effect

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

  1. no effect
  2. negative
  3. negative

15 papers more in this group

See all 19 papers →

light · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results

28 papers: 21 positive, 7 negative or no effect

20 papers in the same direction as this paper · 7 in the opposite direction

  1. negative
  2. negative
  3. no effect

24 papers more in this group

See all 28 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.