Abstract
Application of film antitranspirant to wheat during late stem extension reduces drought damage to yield, but the mechanism is unknown. Field experiments under rain shelters were conducted over 3 years to test the hypothesis that film antitranspirant applied before meiosis alleviates drought-induced losses of pollen viability, grain number and yield. The film antitranspirant di-1-p-menthene was applied at third-node stage, and meiosis occurred at the early boot stage, with a range of 11–16 days after spray application in different years. Irrigated, unsprayed plots were included under the rain-shelters, and pollen viability, measured in 2 years in these plots, averaged 95.3%. Drought reduced pollen viability to 80.1% in unirrigated, unsprayed plots, but only to 88.6% in unirrigated plots treated with film antitranspirant. Grain number and yield of irrigated plots, measured in all years, were 16 529 m–2 and 9.55 t ha–1, respectively, on average. These were reduced by drought to 11 410 m–2 and 6.31 t ha–1 in unirrigated, unsprayed plots, but only to 12 878 m–2 and 6.97 t ha–1 in unirrigated plots treated with film antitranspirant. Thus compared with unirrigated, unsprayed plots, antitranspirant gave a grain yield benefit of 0.66 t ha–1. Further work is needed to validate the pollen viability mechanism in different climatic zones and with a wide range of cultivars.
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Claims 10
Claim · model-written summary
Wheat pollen viability was 95.3% under the reported conditions.
- Taxon
- wheat
Triticum aestivumt0 - Outcome
- pollen viabilitye0
- Value
- 95.3%e0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pollen viability, measured in 2 years in these plots, averaged 95.3%”
t0“wheat”
Claim · model-written summary
Wheat pollen viability was 80.1% under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Droughte0
- Outcome
- pollen viabilitye0
- Direction
- reducede0
- Value
- 80.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought reduced pollen viability to 80.1% in unirrigated, unsprayed plots”
t0“wheat”
Claim · model-written summary
Wheat pollen viability was 88.6% under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- film antitranspirante0
- Outcome
- but only to 88.6% in unirrigated plots treated with film antitranspirante0
- Value
- 88.6%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but only to 88.6% in unirrigated plots treated with film antitranspirant”
t0“wheat”
Claim · model-written summary
Wheat Grain number was 16 529 m–2 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- irrigated plotse0
- Outcome
- Grain numbere0
- Value
- 16 529 m–2e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain number and yield of irrigated plots, measured in all years, were 16 529 m–2 and 9.55 t ha–1”
t0“wheat”
Claim · model-written summary
Wheat yield was 9.55 t ha–1 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- irrigated plotse0
- Outcome
- yielde0
- Value
- 9.55 t ha–1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain number and yield of irrigated plots, measured in all years, were 16 529 m–2 and 9.55 t ha–1”
t0“wheat”
Claim · model-written summary
Wheat Grain number was 11 410 m–2 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- These were reduced by drought to 11 410 m–2 and 6.31 t ha–1 in unirrigated, unsprayed plotse0
- Direction
- reducede0
- Value
- 11 410 m–2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These were reduced by drought to 11 410 m–2 and 6.31 t ha–1 in unirrigated, unsprayed plots”
t0“wheat”
Claim · model-written summary
Wheat yield was 6.31 t ha–1 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- droughte0
- Outcome
- These were reduced by drought to 11 410 m–2 and 6.31 t ha–1 in unirrigated, unsprayed plotse0
- Direction
- reducede0
- Value
- 6.31 t ha–1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These were reduced by drought to 11 410 m–2 and 6.31 t ha–1 in unirrigated, unsprayed plots”
t0“wheat”
Claim · model-written summary
Wheat Grain number was 12 878 m–2 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- film antitranspirante0
- Outcome
- but only to 12 878 m–2 and 6.97 t ha–1 in unirrigated plots treated with film antitranspirante0
- Value
- 12 878 m–2e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but only to 12 878 m–2 and 6.97 t ha–1 in unirrigated plots treated with film antitranspirant”
t0“wheat”
Claim · model-written summary
Wheat yield was 6.97 t ha–1 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- film antitranspirante0
- Outcome
- but only to 12 878 m–2 and 6.97 t ha–1 in unirrigated plots treated with film antitranspirante0
- Value
- 6.97 t ha–1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but only to 12 878 m–2 and 6.97 t ha–1 in unirrigated plots treated with film antitranspirant”
t0“wheat”
Claim · model-written summary
Wheat grain yield benefit was 0.66 t ha–1 under the reported conditions.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- antitranspirante0
- Outcome
- grain yield benefite0
- Direction
- benefite0
- Value
- 0.66 t ha–1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“antitranspirant gave a grain yield benefit of 0.66 t ha–1”
t0“wheat”
The same questions in other papers
drought · yield · Triticum aestivum (wheat)Positive and negative results
536 papers in the same direction as this paper · 95 in the opposite direction
- negative
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- positive
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See all 632 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.