Abstract
Abstract Gibberellic acid (GA) applied as an aqueous spray to 4-year-old ‘Ascolano’ olive trees at concentrations of 250 or 500 ppm promoted shoot growth, mainly through internode elongation. Indoleacetic acid (IAA) at the same concentrations caused curling of young leaves and suppressed terminal bud growth for 10 to 14 days. Shoot growth promotion by GA was counteracted by IAA. GA at 100, 250 or 500 ppm significantly promoted xylem differentiation and development in newly developed regions of olive shoots. GA + IAA, both at 250 or 500 ppm, had a synergistic effect. IAA at all concentrations had no effect in this respect. Xylem lignification was normal in all treated shoots. It is suggested that the endogenous gibberellin level was the limiting factor for xylem development and that a certain balance between auxin and gibberellin is required to stimulate cambial activity with subsequent xylem development. Secondary phloem development was not influenced by IAA and/or GA. GA alone or in combination with IAA stimulated precocious periderm formation
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Claims 11
Claim · model-written summary
GA at 250 or 500 ppm promoted shoot growth, mainly by internode elongation.
- Taxon
- olive trees
Olea europaeae0 - Material
- ‘Ascolano’e0
- Treatment
- Gibberellic acid (GA) applied as an aqueous spraye0
- Outcome
- shoot growthe0
- Direction
- promotede0
- Value
- 250 or 500 ppme0
- Qualifier
- mainly through internode elongatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gibberellic acid (GA) applied as an aqueous spray to 4-year-old ‘Ascolano’ olive trees at concentrations of 250 or 500 ppm promoted shoot growth, mainly through internode elongation”
Claim · model-written summary
IAA at the same concentrations caused young leaf curling.
- Taxon
- OliveOlea europaeat0
- Organ / stage
- young leavese0
- Treatment
- Indoleacetic acid (IAA)e0
- Outcome
- curling of young leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indoleacetic acid (IAA) at the same concentrations caused curling of young leaves”
t0“the Olive”
Claim · model-written summary
IAA suppressed terminal bud growth for 10 to 14 days.
- Taxon
- OliveOlea europaeat0
- Treatment
- Indoleacetic acid (IAA)e0
- Outcome
- terminal bud growthe0
- Direction
- suppressede0
- Value
- 10 to 14 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Indoleacetic acid (IAA) at the same concentrations caused curling of young leaves and suppressed terminal bud growth for 10 to 14 days”
t0“the Olive”
Claim · model-written summary
IAA counteracted GA promotion of shoot growth.
- Taxon
- OliveOlea europaeat0
- Treatment
- IAAe0
- Outcome
- Shoot growth promotione0
- Direction
- counteractede0
- Comparator
- GAe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot growth promotion by GA was counteracted by IAA”
t0“the Olive”
Claim · model-written summary
GA at 100, 250 or 500 ppm significantly promoted xylem differentiation and development.
- Taxon
- oliveOlea europaeae0
- Organ / stage
- newly developed regions of olive shootse0
- Treatment
- GA at 100, 250 or 500 ppme0
- Outcome
- xylem differentiation and developmente0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA at 100, 250 or 500 ppm significantly promoted xylem differentiation and development in newly developed regions of olive shoots”
Claim · model-written summary
GA plus IAA at 250 or 500 ppm had a synergistic effect on xylem development.
- Taxon
- oliveOlea europaeae1
- Treatment
- GA + IAA, both at 250 or 500 ppme0
- Outcome
- xylem differentiation and developmente1
- Direction
- synergistic effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA + IAA, both at 250 or 500 ppm, had a synergistic effect”
e1“xylem differentiation and development in newly developed regions of olive shoots”
Claim · model-written summary
IAA did not affect xylem development at any concentration.
- Taxon
- oliveOlea europaeae1
- Treatment
- IAA at all concentrationse0
- Outcome
- xylem differentiation and developmente1
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“IAA at all concentrations had no effect in this respect”
e1“xylem differentiation and development in newly developed regions of olive shoots”
Claim · model-written summary
Xylem lignification was normal in all treated shoots.
- Taxon
- OliveOlea europaeat0
- Organ / stage
- treated shootse0
- Outcome
- Xylem lignification was normale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Xylem lignification was normal in all treated shoots”
t0“the Olive”
Claim · model-written summary
Secondary phloem development was not influenced by IAA or GA.
- Taxon
- OliveOlea europaeat0
- Treatment
- IAA and/or GAe0
- Outcome
- Secondary phloem developmente0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Secondary phloem development was not influenced by IAA and/or GA”
t0“the Olive”
Claim · model-written summary
GA alone stimulated precocious periderm formation.
- Taxon
- OliveOlea europaeat0
- Treatment
- GA alonee0
- Outcome
- precocious periderm formatione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA alone or in combination with IAA stimulated precocious periderm formation”
t0“the Olive”
Claim · model-written summary
GA combined with IAA stimulated precocious periderm formation.
- Taxon
- OliveOlea europaeat0
- Treatment
- GA alone or in combination with IAAe0
- Outcome
- precocious periderm formatione0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GA alone or in combination with IAA stimulated precocious periderm formation”
t0“the Olive”
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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.