Paper · 1978 · Annals of Applied Biology

The effect of sowing density and application of gibberellic acid on male sterility and ear emergence in ethephon‐treated field‐grown wheat

W. G. HUGHES; J. J. BODDEN; STELLA GALANOPOULOU

7
claims
15
verbatim quotes
5
citations
2
research areas
—
Not open access

Abstract

SUMMARY The induction of male sterility with ethephon and improvement in ear emergence with GA 3 (1‐1 kg a.i./ha) applied 3 days later, was investigated in the winter wheat cv. Maris Nimrod sown in the field at 72 , 138 and 276 spaced plants/m 2 . Increased sowing density resulted in fewer surviving tillers per plant, a larger number of tillers per unit area and consequently a narrower range of stage of tiller development. This permitted a more accurate assessment of the correct time for ethephon application and resulted in a larger proportion of tillers responding to GA 3 by having fully emerged ears. The most effective treatments for the production of emerged male sterile ears were 6‐4 and 12‐8 kg ethephon/ha applied to crops sown at the highest density.

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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 7

Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher sowing density reduced surviving tillers per wheat plant.

Taxon
winter wheatTriticum aestivume1
Material
Maris Nimrode1
Treatment
Increased sowing densitye0
Outcome
surviving tillers per plante0
Direction
fewere0

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

“Increased sowing density resulted in fewer surviving tillers per plant”

✓ located verbatim in the source · abstract, characters 248–318 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher sowing density increased tillers per unit area.

Taxon
winter wheatTriticum aestivume1
Material
Maris Nimrode1
Treatment
Increased sowing densitye0
Outcome
tillers per unit areae0
Direction
largere0

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

“Increased sowing density resulted in fewer surviving tillers per plant, a larger number of tillers per unit area”

✓ located verbatim in the source · abstract, characters 248–360 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Higher density narrowed the range of tiller developmental stages.

Taxon
winter wheatTriticum aestivume1
Treatment
Increased sowing densitye0
Outcome
range of stage of tiller developmente0
Direction
narrowere0

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

“Increased sowing density resulted in fewer surviving tillers per plant, a larger number of tillers per unit area and consequently a narrower range of stage of tiller development”

✓ located verbatim in the source · abstract, characters 248–425 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Narrower tiller staging allowed more accurate ethephon application timing.

Taxon
winter wheatTriticum aestivume1
Outcome
more accurate assessment of the correct time for ethephon applicatione0

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

“This permitted a more accurate assessment of the correct time for ethephon application”

✓ located verbatim in the source · abstract, characters 427–513 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

More tillers responded to GA3 with fully emerged ears at higher density.

Taxon
winter wheatTriticum aestivume2
Treatment
Increased sowing densitye1
Outcome
proportion of tillers responding to GA 3 by having fully emerged earse0
Direction
largere0

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

“resulted in a larger proportion of tillers responding to GA 3 by having fully emerged ears”

✓ located verbatim in the source · abstract, characters 518–608 · show in text ↑
e1

“Increased sowing density”

✓ located verbatim in the source · abstract, characters 248–272 · show in text ↑
e2

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At highest sowing density, 6‐4 kg ethephon/ha was among the most effective treatments for emerged male-sterile ears.

Taxon
winter wheatTriticum aestivume1
Treatment
6‐4e0
Outcome
production of emerged male sterile earse0
Direction
most effectivee0
Qualifier
highest densitye0

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 most effective treatments for the production of emerged male sterile ears were 6‐4 and 12‐8 kg ethephon/ha applied to crops sown at the highest density”

✓ located verbatim in the source · abstract, characters 610–765 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At highest sowing density, 12‐8 kg ethephon/ha was among the most effective treatments for emerged male-sterile ears.

Taxon
winter wheatTriticum aestivume1
Treatment
12‐8 kg ethephon/hae0
Outcome
production of emerged male sterile earse0
Direction
most effectivee0
Qualifier
highest densitye0

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 most effective treatments for the production of emerged male sterile ears were 6‐4 and 12‐8 kg ethephon/ha applied to crops sown at the highest density”

✓ located verbatim in the source · abstract, characters 610–765 · show in text ↑
e1

“winter wheat cv. Maris Nimrod”

✓ located verbatim in the source · abstract, characters 160–189 · show in text ↑

(2-chloroethyl)phosphonic acid · yield · Triticum aestivum (wheat)Results differ

21 papers: 15 positive, 6 negative or no effect

14 papers in the same direction as this paper · 6 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

17 papers more in this group

See all 21 papers →

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

498 papers: 376 positive, 122 negative or no effect

375 papers in the same direction as this paper · 115 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

494 papers more in this group

See all 498 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.