Paper · 2020 · Ornamental Horticulture

Differential growth response of green and variegated Ficus benjamina to exogenous cytokinin and shade

Adalberto Di Benedetto; Claudio Galmarini; Jorge Tognetti

6
claims
12
verbatim quotes
11
citations
3
research areas
✓
Open access · cc-by

Abstract

Abstract Benjamin fig (Ficus benjamina) is an important foliage and landscape crop species comprising green and variegated genotypes. The latter develop leaves with yellow and white leaf areas which may impose lower photosynthetic activity, thus resulting in slower growth than green genotypes. In many species, the exogenous supply of cytokinin to pot-grown plants promotes growth, mainly due to enhanced carbon fixation. In this work, we analyze the effect of spraying the cytokinin 6-benzylaminopurine (BAP) on growth and development of green and variegated Ficus benjamina genotypes. Two experiments were carried out in a greenhouse, in which either different number of BAP applications (Experiment 1) or different BAP concentrations (Experiment 2) were tested. In Experiment 2, plants were grown under three different light intensities. BAP sprays promoted rate of leaf appearance, leaf expansion and whole-plant growth, and the effect was stronger in variegated than in green plants. The relative growth rate promotion by BAP was associated with increased net assimilation rate rather than with variation in the leaf area ratio. On the other hand, shading had a more negative impact on growth and development of variegated plants than in green ones. Variegated plants, unlike green ones, developed leaves with high specific leaf area under the lowest light intensity. This led to high leaf area ratio values, which helped to maintain relative growth rates close to those of plants under moderate shading.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

BAP sprays increased leaf appearance, leaf expansion and whole-plant growth, more strongly in variegated than green Ficus.

Taxon
Ficus benjaminaFicus benjaminat0
Material
variegatede0
Treatment
BAP sprayse0
Outcome
rate of leaf appearance, leaf expansion and whole-plant growthe0
Direction
promotede0
Comparator
green plantse0

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“BAP sprays promoted rate of leaf appearance, leaf expansion and whole-plant growth, and the effect was stronger in variegated than in green plants.”

✓ located verbatim in the source · abstract, characters 842–989 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

BAP-related growth promotion was associated with increased net assimilation rate.

Taxon
Ficus benjaminaFicus benjaminat0
Treatment
BAPe0
Outcome
relative growth rate promotione0
Direction
promotione0
Qualifier
increased net assimilation ratee0

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The relative growth rate promotion by BAP was associated with increased net assimilation rate rather than with variation in the leaf area ratio.”

✓ located verbatim in the source · abstract, characters 990–1134 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑
Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

BAP-related growth promotion was not associated with variation in leaf area ratio.

Taxon
Ficus benjaminaFicus benjaminat0
Treatment
BAPe0
Outcome
leaf area ratioe0
Qualifier
rather than with variatione0

Not reportedDirection

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The relative growth rate promotion by BAP was associated with increased net assimilation rate rather than with variation in the leaf area ratio.”

✓ located verbatim in the source · abstract, characters 990–1134 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Shade harmed growth and development more in variegated than green Ficus.

Taxon
Ficus benjaminaFicus benjaminat0
Material
variegated plantse0
Treatment
shadinge0
Outcome
growth and developmente0
Direction
more negativee0
Comparator
green onese0

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“shading had a more negative impact on growth and development of variegated plants than in green ones.”

✓ located verbatim in the source · abstract, characters 1154–1255 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Under the lowest light intensity, variegated plants developed leaves with high specific leaf area, unlike green plants.

Taxon
Ficus benjaminaFicus benjaminat0
Material
Variegated plantse0
Treatment
lowest light intensitye0
Outcome
specific leaf areae0
Direction
highe0
Comparator
green onese0

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Variegated plants, unlike green ones, developed leaves with high specific leaf area under the lowest light intensity.”

✓ located verbatim in the source · abstract, characters 1256–1373 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

High leaf area ratio helped variegated plants retain relative growth rates near those under moderate shade.

Taxon
Ficus benjaminaFicus benjaminat0
Outcome
relative growth ratese0
Direction
close toe0
Qualifier
high leaf area ratio valuese0
Comparator
plants under moderate shadinge0

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

Ficus benjamina
Ficus benjamina · TaxonKENPEI · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“This led to high leaf area ratio values, which helped to maintain relative growth rates close to those of plants under moderate shading.”

✓ located verbatim in the source · abstract, characters 1374–1510 · show in text ↑
t0

“Ficus benjamina”

✓ located verbatim in the source · title, characters 53–68 · show in text ↑

N-benzyladenine · growth · Ficus benjamina (weeping fig)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 papers →

shade · growth · Ficus benjamina (weeping fig)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative
See all 4 papers →

application · growth · Ficus benjamina (weeping fig)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 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.