Paper · 1999 · HortScience

Ethephon Increases Carotene Content and Intensifies Root Color of Carrots

Milton E. McGiffen; Edmund J. Ogbuchiekwe

3
claims
7
verbatim quotes
2
citations
2
research areas
✓
Open access

Abstract

Poor root color is a recurring problem in carrot ( Daucus carota L.) production. Consumers prefer dark orange carrots that are high in carotene. However, unfavorable environmental conditions and certain production practices can lead to light orange roots with low carotene content. Growers sometimes refer to this as “white root.” No one has clearly established the causes or cures for this disorder. Several environmental factors are known to affect the color of carrots, but to date there is no practical treatment. High-density planting often reduces carotene content. Field studies were conducted in the 1995-96 and 1996-97 winter growing seasons to determine if foliar applications of ethephon would improve carrot color, carotene content, and yield. Carotene content and root color increased as the number of applications or the amount of ethephon applied with each application increased. Root weight was not significantly affected.

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Claims 3

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Carotene content increased with more ethephon applications or a greater dose per application.

Taxon
carrotDaucus carotae0
Treatment
ethephone1
Outcome
Carotene contente1
Direction
increasede1
Qualifier
as the number of applications or the amount of ethephon applied with each application increasede1

Not reportedComparator

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

Daucus carota
Daucus carota · TaxonZeynel Cebeci · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“carrot ( Daucus carota L.)”

✓ located verbatim in the source · abstract, characters 42–68 · show in text ↑
e1

“Carotene content and root color increased as the number of applications or the amount of ethephon applied with each application increased.”

✓ located verbatim in the source · abstract, characters 756–894 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Root color intensified with more ethephon applications or a greater dose per application.

Taxon
carrotDaucus carotae0
Treatment
ethephone1
Outcome
root colore1
Direction
increasede1
Qualifier
as the number of applications or the amount of ethephon applied with each application increasede1

Not reportedComparator

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

Daucus carota
Daucus carota · TaxonZeynel Cebeci · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“carrot ( Daucus carota L.)”

✓ located verbatim in the source · abstract, characters 42–68 · show in text ↑
e1

“Carotene content and root color increased as the number of applications or the amount of ethephon applied with each application increased.”

✓ located verbatim in the source · abstract, characters 756–894 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Ethephon applications did not significantly affect root weight.

Taxon
carrotDaucus carotae0
Treatment
foliar applications of ethephone1
Outcome
Root weighte2
Direction
not significantly affectede2

Not reportedComparator

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

Daucus carota
Daucus carota · TaxonZeynel Cebeci · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“carrot ( Daucus carota L.)”

✓ located verbatim in the source · abstract, characters 42–68 · show in text ↑
e1

“foliar applications of ethephon”

✓ located verbatim in the source · abstract, characters 667–698 · show in text ↑
e2

“Root weight was not significantly affected.”

✓ located verbatim in the source · abstract, characters 895–938 · show in text ↑

(2-chloroethyl)phosphonic acid · quality: phytochemicals · Daucus carota (carrot)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 →

application · growth · Daucus carota (carrot)Positive and negative results

20 papers: 16 positive, 4 negative or no effect

3 papers in the same direction as this paper · 16 in the opposite direction

  1. positive
  2. positive
  3. positive

16 papers more in this group

See all 20 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.