Paper · 1996 · Journal of Horticultural Science

Effects of gibberellic acid, asparagine and glutamine on flower bud induction in olive

P. Proietti; A. Tombesi

19
claims
35
verbatim quotes
20
citations
4
research areas
—
Not open access

Abstract

SummaryIn 1992, the following treatments were applied to olive trees, cv. Maurino, which had average flowering: removal of 50% and 100% of the flowers in mid-June, leaf treatment with gibberellic acid (GA3) at 60 ppm in mid-July, at the end of August, in mid-October and in July, August and October, leaf treatment with paclobutrazol (PP333) at 1000 ppm at the end of October, treatment of the soil with asparagine (10–5M) and glutamine (10–5M) at the end of December. Thinning and complete removal of the blossoms stimulated vegetative activity. Treatments with GA3 in July slightly increased vegetative growth in both the treatment year and the following year, while the later treatments and those with asparagine and glutamine stimulated growth only in the following year. PP333 reduced plant growth in the year following treatment. The complete or partial removal of the olive blossoms strongly increased flowering and fruit production in the year following treatment. Treatment with GA3 and PP333 did not significantly influence flowering or fruit production in the following year. Application of asparagine and glutamine positively influenced the induction process without affecting production per tree. Therefore, GA3 and other hormonal substances seem not to have a direct influence on flower bud induction but rather, induction is mediated by their effects on the availability and distribution of the assimilates. Asparagine and glutamine may be involved in the inductive process as messengers in relation to the food reserves in the plant.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 19

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Partial flower thinning stimulated vegetative activity.

Taxon
oliveOlea europaeae1
Treatment
Thinninge0
Outcome
vegetative activitye0
Direction
stimulatede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Thinning and complete removal of the blossoms stimulated vegetative activity.”

✓ located verbatim in the source · abstract, characters 469–546 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Complete blossom removal stimulated vegetative activity.

Taxon
oliveOlea europaeae1
Treatment
complete removal of the blossomse0
Outcome
vegetative activitye0
Direction
stimulatede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Thinning and complete removal of the blossoms stimulated vegetative activity.”

✓ located verbatim in the source · abstract, characters 469–546 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

July GA3 slightly increased vegetative growth in the treatment year and next year.

Taxon
oliveOlea europaeae1
Treatment
GA3 in Julye0
Outcome
vegetative growthe0
Direction
increasede0
Qualifier
both the treatment year and the following yeare0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Treatments with GA3 in July slightly increased vegetative growth in both the treatment year and the following year”

✓ located verbatim in the source · abstract, characters 547–661 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Later GA3 treatments stimulated growth only in the following year.

Taxon
oliveOlea europaeae1
Treatment
GA3e2
Outcome
growthe0
Direction
stimulatede0
Qualifier
only in the following yeare0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the later treatments and those with asparagine and glutamine stimulated growth only in the following year.”

✓ located verbatim in the source · abstract, characters 669–775 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
e2

“Treatments with GA3 in July”

✓ located verbatim in the source · abstract, characters 547–574 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Asparagine stimulated growth in the following year only.

Taxon
oliveOlea europaeae1
Treatment
asparaginee0
Outcome
growthe0
Direction
stimulatede0
Qualifier
only in the following yeare0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the later treatments and those with asparagine and glutamine stimulated growth only in the following year.”

✓ located verbatim in the source · abstract, characters 669–775 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Glutamine stimulated growth in the following year only.

Taxon
oliveOlea europaeae1
Treatment
glutaminee0
Outcome
growthe0
Direction
stimulatede0
Qualifier
only in the following yeare0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“the later treatments and those with asparagine and glutamine stimulated growth only in the following year.”

✓ located verbatim in the source · abstract, characters 669–775 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

PP333 reduced plant growth the following year.

Taxon
oliveOlea europaeae1
Treatment
PP333e0
Outcome
plant growthe0
Direction
reducede0
Qualifier
year following treatmente0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“PP333 reduced plant growth in the year following treatment.”

✓ located verbatim in the source · abstract, characters 776–835 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Complete blossom removal strongly increased flowering in the following year.

Taxon
oliveOlea europaeae0
Treatment
completee0
Outcome
floweringe0
Direction
increasede0
Qualifier
year following treatmente0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The complete or partial removal of the olive blossoms strongly increased flowering and fruit production in the year following treatment.”

✓ located verbatim in the source · abstract, characters 836–972 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Partial blossom removal strongly increased flowering in the following year.

Taxon
oliveOlea europaeae0
Treatment
partial removal of the olive blossomse0
Outcome
floweringe0
Direction
increasede0
Qualifier
year following treatmente0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The complete or partial removal of the olive blossoms strongly increased flowering and fruit production in the year following treatment.”

✓ located verbatim in the source · abstract, characters 836–972 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Complete blossom removal strongly increased fruit production in the following year.

Taxon
oliveOlea europaeae0
Treatment
completee0
Outcome
fruit productione0
Direction
increasede0
Qualifier
year following treatmente0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The complete or partial removal of the olive blossoms strongly increased flowering and fruit production in the year following treatment.”

✓ located verbatim in the source · abstract, characters 836–972 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Partial blossom removal strongly increased fruit production in the following year.

Taxon
oliveOlea europaeae0
Treatment
partial removal of the olive blossomse0
Outcome
fruit productione0
Direction
increasede0
Qualifier
year following treatmente0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The complete or partial removal of the olive blossoms strongly increased flowering and fruit production in the year following treatment.”

✓ located verbatim in the source · abstract, characters 836–972 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

GA3 had no significant influence on flowering or fruit production the next year.

Taxon
oliveOlea europaeae1
Treatment
GA3e0
Outcome
flowering or fruit productione0
Direction
no_changeinferrede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Treatment with GA3 and PP333 did not significantly influence flowering or fruit production in the following year.”

✓ located verbatim in the source · abstract, characters 973–1086 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

PP333 had no significant influence on flowering or fruit production the next year.

Taxon
oliveOlea europaeae1
Treatment
PP333e0
Outcome
flowering or fruit productione0
Direction
no_changeinferrede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Treatment with GA3 and PP333 did not significantly influence flowering or fruit production in the following year.”

✓ located verbatim in the source · abstract, characters 973–1086 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Asparagine positively affected flower bud induction without affecting production per tree.

Taxon
oliveOlea europaeae1
Treatment
asparaginee0
Outcome
induction processe0
Direction
positively influencede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of asparagine and glutamine positively influenced the induction process without affecting production per tree.”

✓ located verbatim in the source · abstract, characters 1087–1209 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Glutamine positively affected flower bud induction without affecting production per tree.

Taxon
oliveOlea europaeae1
Treatment
glutaminee0
Outcome
induction processe0
Direction
positively influencede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of asparagine and glutamine positively influenced the induction process without affecting production per tree.”

✓ located verbatim in the source · abstract, characters 1087–1209 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Asparagine did not affect production per tree.

Taxon
oliveOlea europaeae1
Treatment
asparaginee0
Outcome
production per treee0
Direction
no_changeinferrede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of asparagine and glutamine positively influenced the induction process without affecting production per tree.”

✓ located verbatim in the source · abstract, characters 1087–1209 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Glutamine did not affect production per tree.

Taxon
oliveOlea europaeae1
Treatment
glutaminee0
Outcome
production per treee0
Direction
no_changeinferrede0

Not reportedComparator

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of asparagine and glutamine positively influenced the induction process without affecting production per tree.”

✓ located verbatim in the source · abstract, characters 1087–1209 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The authors propose that hormonal effects on induction are mediated through assimilate availability and distribution.

Taxon
oliveOlea europaeae1
Treatment
GA3 and other hormonal substancese0
Outcome
flower bud inductione0
Qualifier
availability and distribution of the assimilatese0

Not reportedDirection

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“GA3 and other hormonal substances seem not to have a direct influence on flower bud induction but rather, induction is mediated by their effects on the availability and distribution of the assimilates.”

✓ located verbatim in the source · abstract, characters 1221–1422 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑
Mechanismhypothesisoriginal resultmeasured

Claim · model-written summary

The authors suggest that asparagine and glutamine may act as messengers in induction in relation to reserves.

Taxon
oliveOlea europaeae1
Compound
Asparagine and glutaminee0
Outcome
inductive processe0
Qualifier
as messengers in relation to the food reservese0

Not reportedDirection

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

Olea europaea
Olea europaea · TaxonHans Hillewaert · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Asparagine and glutamine may be involved in the inductive process as messengers in relation to the food reserves in the plant.”

✓ located verbatim in the source · abstract, characters 1423–1549 · show in text ↑
e1

“olive trees”

✓ located verbatim in the source · abstract, characters 57–68 · show in text ↑

paclobutrazol · yield · Olea europaea (common olive)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 papers →

paclobutrazol · growth · Olea europaea (common olive)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 papers →

Gibberellic acid · growth · Olea europaea (common olive)Positive and negative results

13 papers: 12 positive, 1 negative or no effect

11 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

9 papers more in this group

See all 13 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.