Paper · 2017 · South African Journal of Enology and Viticulture

Gibberellic Acid Levels and Quality Effects of Gibberellic Acid in Treated Table Grapes

E.E.H. Wolf; J.T. Loubser

7
claims
14
verbatim quotes
3
citations
4
research areas
✓
Open access · cc-by-nc-nd

Abstract

Sultanina and Waltham Cross vineyards were treated with increasing dosages and late applications of gibberellic acid. Berries with sampled at different stages after treatment as well as after four weeks' cold storage. The gibberellic acid levels of treated and untreated berries were determined using a gibberellic acid-specific radio-immunoassay. Irrespective of treatment, late applications and high dosages increased gibberellic acid levels in berries at harvest but did not exceed the 200 ng/g fresh berry mass maximum limit. The effects of treatments on bunch quality, i.e. ripeness, berry size, berry crack, berry shatter, decay, S02 damage, colour, blemishes, even berry size, straggliness and dry stems were also determined. Berry ripening was delayed and blemishes were induced by high GA dosages and late GA applications.

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Claims 7

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Late gibberellic acid applications increased berry gibberellic acid levels at harvest.

Taxon
Table Grapest0
Organ / stage
berriese0
Treatment
late applicationse0
Outcome
gibberellic acid levels in berriese0
Direction
increasede0
Qualifier
at harveste0

Not reportedComparator

Verbatim

e0

“late applications and high dosages increased gibberellic acid levels in berries at harvest”

✓ located verbatim in the source · abstract, characters 375–465 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

High gibberellic acid dosages increased berry gibberellic acid levels at harvest.

Taxon
Table Grapest0
Organ / stage
berriese0
Treatment
high dosagese0
Outcome
gibberellic acid levels in berriese0
Direction
increasede0
Qualifier
at harveste0

Not reportedComparator

Verbatim

e0

“late applications and high dosages increased gibberellic acid levels in berries at harvest”

✓ located verbatim in the source · abstract, characters 375–465 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Berry gibberellic acid levels did not exceed the maximum limit.

Taxon
Table Grapest0
Outcome
gibberellic acid levels in berriese0
Direction
did not exceede0
Value
200 ng/g fresh berry masse0

Verbatim

e0

“increased gibberellic acid levels in berries at harvest but did not exceed the 200 ng/g fresh berry mass maximum limit”

✓ located verbatim in the source · abstract, characters 410–528 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High gibberellic acid dosages delayed berry ripening.

Taxon
Table Grapest0
Treatment
high GA dosagese0
Outcome
Berry ripeninge0
Direction
delayede0

Not reportedComparator

Verbatim

e0

“Berry ripening was delayed and blemishes were induced by high GA dosages and late GA applications.”

✓ located verbatim in the source · abstract, characters 733–831 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Late gibberellic acid applications delayed berry ripening.

Taxon
Table Grapest0
Treatment
late GA applicationse0
Outcome
Berry ripeninge0
Direction
delayede0

Not reportedComparator

Verbatim

e0

“Berry ripening was delayed and blemishes were induced by high GA dosages and late GA applications.”

✓ located verbatim in the source · abstract, characters 733–831 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

High gibberellic acid dosages induced berry blemishes.

Taxon
Table Grapest0
Treatment
high GA dosagese0
Outcome
blemishese0
Direction
inducede0

Not reportedComparator

Verbatim

e0

“Berry ripening was delayed and blemishes were induced by high GA dosages and late GA applications.”

✓ located verbatim in the source · abstract, characters 733–831 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Late gibberellic acid applications induced berry blemishes.

Taxon
Table Grapest0
Treatment
late GA applicationse0
Outcome
blemishese0
Direction
inducede0

Not reportedComparator

Verbatim

e0

“Berry ripening was delayed and blemishes were induced by high GA dosages and late GA applications.”

✓ located verbatim in the source · abstract, characters 733–831 · show in text ↑
t0

“Table Grapes”

✓ located verbatim in the source · title, characters 75–87 · show in text ↑

Gibberellic acid · quality: postharvest · VitisPositive and negative results

16 papers: 14 positive, 2 negative or no effect

1 paper in the same direction as this paper · 14 in the opposite direction

  1. positive
  2. positive
  3. positive

12 papers more in this group

See all 16 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.