Abstract
Abstract Chemical regulation using plant growth regulators has proved to be potentially beneficial in water‐saving agriculture. This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’) to study the effect of chemical regulation on alleviation of water deficit stress during the grain filling stage. Uniconazole, a plant growth regulator, was foliar sprayed at 85 % (adequate irrigation) and 60 % (deficit irrigation) field capacity. Results showed that the distribution of 3 H‐H 2 O in roots and flag leaf, characteristics of vascular bundle in primary roots and internode below spike, roots activity, transpiration rate and stomatal conductance of flag leaf were negatively affected by deficit irrigation after flowering. Foliar spraying at the early jointing stage with 13.5 gha −1 uniconazole was able to relieve and compensate for the harmful effects of deficit irrigation. Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole, while root viability and their ability to absorb and transport water were increased. In the flag leaf, stomatal conductance was reduced to maintain the transpiration rate and water use efficiency (WUE) measured for a single wheat plant was higher. Uniconazole increased WUE by 25.0 % under adequate and 22 % under deficit irrigations. Under adequate irrigations, the 14 C‐assimilates export rate from flag leaf in 12 h (E 12h ) was increased by 65 % and 36 % in early and late filling stages, while under deficit irrigations, the E 12h of uniconazole‐treated plants exceeded that of control plants by 5 % and 34 % respectively. Physiological damages caused by water deficiency during the grain filling stage of wheat was alleviated by foliar spraying with uniconazole.
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Claims 11
Claim · model-written summary
Deficit irrigation harmed water distribution, vascular bundles, root activity and flag-leaf gas exchange.
- Taxon
- winter wheat
Triticum aestivume1 - Treatment
- deficit irrigatione0
- Outcome
- distribution of 3 H‐H 2 O in roots and flag leafe0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“distribution of 3 H‐H 2 O in roots and flag leaf, characteristics of vascular bundle in primary roots and internode below spike, roots activity, transpiration rate and stomatal conductance of flag leaf were negatively affected by deficit irrigation after flowering”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Uniconazole increased vascular bundle area in roots and internode.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- uniconazolee0
- Outcome
- area of vascular bundle in primary roots and internode below the eare0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Uniconazole increased root viability and water absorption and transport.
- Taxon
- winter wheatTriticum aestivume2
- Treatment
- uniconazolee1
- Outcome
- root viability and their ability to absorb and transport watere0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root viability and their ability to absorb and transport water were increased”
e1“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
e2“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Uniconazole reduced flag-leaf stomatal conductance.
- Taxon
- winter wheatTriticum aestivume2
- Treatment
- uniconazolee1
- Outcome
- stomatal conductancee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the flag leaf, stomatal conductance was reduced to maintain the transpiration rate”
e1“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
e2“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Uniconazole raised single-plant WUE.
- Taxon
- wheatTriticum aestivume0
- Treatment
- uniconazolee1
- Outcome
- water use efficiency (WUE)e0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water use efficiency (WUE) measured for a single wheat plant was higher”
e1“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
Claim · model-written summary
Uniconazole increased WUE by 25.0% under adequate irrigation.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- Uniconazolee0
- Outcome
- WUEe0
- Direction
- increasede0
- Value
- 25.0 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole increased WUE by 25.0 % under adequate”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Uniconazole increased WUE by 22% under deficit irrigation.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- Uniconazolee0
- Outcome
- WUEe0
- Direction
- increasede0
- Value
- 22 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole increased WUE by 25.0 % under adequate and 22 % under deficit irrigations”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Under adequate irrigation, early-filling assimilate export increased 65%.
- Taxon
- winter wheatTriticum aestivume2
- Organ / stage
- earlye0
- Treatment
- uniconazolee1
- Outcome
- 14 C‐assimilates export rate from flag leaf in 12 he0
- Direction
- increasede0
- Value
- 65 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under adequate irrigations, the 14 C‐assimilates export rate from flag leaf in 12 h (E 12h ) was increased by 65 % and 36 % in early and late filling stages”
e1“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
e2“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Under adequate irrigation, late-filling assimilate export increased 36%.
- Taxon
- winter wheatTriticum aestivume2
- Organ / stage
- late filling stagese0
- Treatment
- uniconazolee1
- Outcome
- 14 C‐assimilates export rate from flag leaf in 12 he0
- Direction
- increasede0
- Value
- 36 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under adequate irrigations, the 14 C‐assimilates export rate from flag leaf in 12 h (E 12h ) was increased by 65 % and 36 % in early and late filling stages”
e1“Both the area of vascular bundle in primary roots and internode below the ear were increased by uniconazole”
e2“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Under deficit irrigation, early-filling assimilate export exceeded control by 5%.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- uniconazole‐treated plantse0
- Outcome
- E 12he0
- Direction
- exceedede0
- Value
- 5 %e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under deficit irrigations, the E 12h of uniconazole‐treated plants exceeded that of control plants by 5 % and 34 % respectively”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
Claim · model-written summary
Under deficit irrigation, late-filling assimilate export exceeded control by 34%.
- Taxon
- winter wheatTriticum aestivume1
- Treatment
- uniconazole‐treated plantse0
- Outcome
- E 12he0
- Direction
- exceedede0
- Value
- 34 %e0
- Comparator
- control plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under deficit irrigations, the E 12h of uniconazole‐treated plants exceeded that of control plants by 5 % and 34 % respectively”
e1“This experiment was conducted with winter wheat ( Triticum aestivum L. cv. ‘Jingdong 6’)”
t0“Wheat”
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See all 11 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.