Paper · 2023 · Pesquisa Agropecuária Brasileira

Physiological and yield parameters of wheat as affected by tiller removal and defoliation

Samuel Luiz Fioreze; Iury Borga; Elisandra Cristina Ribeiro

4
claims
8
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by

Abstract

Abstract The objective of this work was to evaluate the photosynthetic parameters, yield potential, and response to defoliation of wheat (Triticum aestivum) plants subjected to tiller removal. Two experiments were conducted under greenhouse conditions. In the first, the two following cultivars were evaluated for complete tiller removal: TBIO Audaz and BRS 394, with a high and low tillering capacity, respectively. In the second, only 'TBIO Audaz' was subjected to detillering and defoliation at post-anthesis. Tiller removal increased the yield potential of the main stem of both tested cultivars and the CO2 assimilation potential of the flag leaf, which was possibly a strategy to meet the demands for an increased sink strength, as evidenced by the response curves to irradiance and leaf internal CO2 concentration. The partial defoliation of 'TBIO Audaz' increased daily CO2 assimilation, both in intact and detillered plants. Detillered plants show a higher photosynthetic and yield potential of the main stem, but also a greater sensitivity to defoliation in the post-anthesis period.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 4

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tiller removal increased main-stem yield potential in both cultivars.

Treatment
Tiller removale0
Outcome
yield potential of the main steme0
Direction
increasede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Tiller removal increased the yield potential of the main stem of both tested cultivars”

✓ located verbatim in the source · abstract, characters 513–599 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 38–43 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Tiller removal increased flag-leaf CO2 assimilation potential.

Treatment
Tiller removale0
Outcome
CO2 assimilation potential of the flag leafe0
Direction
increasede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Tiller removal increased the yield potential of the main stem of both tested cultivars and the CO2 assimilation potential of the flag leaf”

✓ located verbatim in the source · abstract, characters 513–651 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 38–43 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Partial defoliation increased daily CO2 assimilation in intact and detillered TBIO Audaz.

Material
TBIO Audaze0
Treatment
partial defoliatione0
Outcome
daily CO2 assimilatione0
Direction
increasede0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The partial defoliation of 'TBIO Audaz' increased daily CO2 assimilation, both in intact and detillered plants.”

✓ located verbatim in the source · abstract, characters 822–933 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 38–43 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Detillered plants were more sensitive to post-anthesis defoliation.

Organ / stage
post-anthesis periode0
Treatment
Detillerede0
Outcome
sensitivity to defoliatione0
Direction
greatere0

Not reportedComparator

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Detillered plants show a higher photosynthetic and yield potential of the main stem, but also a greater sensitivity to defoliation in the post-anthesis period.”

✓ located verbatim in the source · abstract, characters 934–1093 · show in text ↑
t0

“wheat”

✓ located verbatim in the source · title, characters 38–43 · show in text ↑

pruning · physiology: photosynthesis · Triticum aestivum (wheat)Results differ

17 papers: 13 positive, 4 negative or no effect

12 papers in the same direction as this paper · 4 in the opposite direction

  1. positive
  2. no effect
  3. negative

13 papers more in this group

See all 17 papers →

tillage · physiology: photosynthesis · Triticum aestivum (wheat)Positive and negative results

28 papers: 23 positive, 5 negative or no effect

22 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. negative
  3. negative

24 papers more in this group

See all 28 papers →

tillage · yield · Triticum aestivum (wheat)Positive and negative results

1,414 papers: 1,116 positive, 298 negative or no effect

1,115 papers in the same direction as this paper · 257 in the opposite direction · 41 reporting no difference from an alternative

  1. negative
  2. negative
  3. negative

1,410 papers more in this group

See all 1,414 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.