Abstract
ABSTRACT Water‐saving breeding and cultivation of winter wheat ( Triticum aestivum L.) have always been among the important missions in North China. But there is still a dispute on the regulation of water use in winter wheat. A pot experiment was conducted to investigate the physiological and morphological mechanisms of water use in two cultivars of winter wheat (KN9204 and drought‐tolerant LH2) via partial root‐zone drying (PRD). The results indicated that the weight of 1000 grains was higher under PRD conditions for both cultivars. Total water consumption per plant significantly decreased by 11.6 and 17.3% for KN9204 and LH2, respectively, and water‐use efficiency (WUE) significantly increased by 17.2 and 20.3% under PRD. The net photosynthetic rate did not differ between PRD and full irrigation (FI) for either cultivar; however, transpiration rate was lower under PRD than FI, which improved WUE at the leaf level. Flag leaf water potential was significantly lower under PRD than FI for both cultivars, while water content was similar for both treatments. The soluble sugars content of leaves of KN9204 was higher under PRD than FI, while the proline content was 45.9% (KN9204) and 15% (LH2) higher under PRD. Stomatal density increased under PRD, but stomatal width and area declined. Overall, the two types of winter wheat had both common and individual means of improving WUE under PRD conditions. The results would further improve the theoretical underpinning of water‐saving breeding and cultivation in winter wheat.
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Claims 14
Claim · model-written summary
Thousand-grain weight was higher under PRD for both cultivars.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- PRDe0
- Outcome
- weight of 1000 grainse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the weight of 1000 grains was higher under PRD conditions for both cultivars”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Water consumption per plant fell 11.6% in KN9204 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- KN9204e0
- Treatment
- PRDe1
- Outcome
- Total water consumption per plante0
- Direction
- decreasede0
- Value
- 11.6e0
- Comparator
- full irrigation (FI)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total water consumption per plant significantly decreased by 11.6 and 17.3% for KN9204 and LH2, respectively”
e1“partial root‐zone drying (PRD). The results indicated that the weight of 1000 grains was higher under PRD conditions for both cultivars. Total water consumption per plant significantly decreased by 11.6 and 17.3% for KN9204 and LH2, respectively, and water‐use efficiency (WUE) significantly increased by 17.2 and 20.3% under PRD. The net photosynthetic rate did not differ between PRD and full irrigation (FI)”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Water consumption per plant fell 17.3% in LH2 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- LH2e0
- Treatment
- PRDe1
- Outcome
- Total water consumption per plante0
- Direction
- decreasede0
- Value
- 17.3%e0
- Comparator
- full irrigation (FI)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total water consumption per plant significantly decreased by 11.6 and 17.3% for KN9204 and LH2, respectively”
e1“PRD and full irrigation (FI)”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
WUE increased 17.2% in KN9204 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- KN9204e1
- Treatment
- PRDe0
- Outcome
- water‐use efficiency (WUE)e0
- Direction
- increasede0
- Value
- 17.2e0
- Comparator
- full irrigation (FI)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water‐use efficiency (WUE) significantly increased by 17.2 and 20.3% under PRD”
e1“KN9204 and LH2”
e2“PRD and full irrigation (FI)”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
WUE increased 20.3% in LH2 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- LH2e1
- Treatment
- PRDe0
- Outcome
- water‐use efficiency (WUE)e0
- Direction
- increasede0
- Value
- 20.3%e0
- Comparator
- full irrigation (FI)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water‐use efficiency (WUE) significantly increased by 17.2 and 20.3% under PRD”
e1“KN9204 and LH2”
e2“PRD and full irrigation (FI)”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Net photosynthetic rate did not differ between PRD and full irrigation.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe0
- Outcome
- net photosynthetic ratee0
- Direction
- did not differe0
- Comparator
- full irrigation (FI)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The net photosynthetic rate did not differ between PRD and full irrigation (FI) for either cultivar”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Transpiration rate was lower under PRD than FI.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe0
- Outcome
- transpiration ratee0
- Direction
- lowere0
- Comparator
- FIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transpiration rate was lower under PRD than FI”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Flag-leaf water potential was lower under PRD than FI.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe0
- Outcome
- Flag leaf water potentiale0
- Direction
- lowere0
- Comparator
- FIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Flag leaf water potential was significantly lower under PRD than FI for both cultivars”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Flag-leaf water content was similar under PRD and FI.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe1
- Outcome
- water contente0
- Direction
- similare0
- Comparator
- FIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while water content was similar for both treatments”
e1“PRD than FI for both cultivars”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Leaf soluble sugar content in KN9204 was higher under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- KN9204e0
- Treatment
- PRDe0
- Outcome
- soluble sugars content of leavese0
- Direction
- highere0
- Comparator
- FIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soluble sugars content of leaves of KN9204 was higher under PRD than FI”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Proline content was 45.9% higher in KN9204 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- KN9204e0
- Treatment
- PRDe0
- Outcome
- proline contente0
- Direction
- highere0
- Value
- 45.9%e0
- Comparator
- FIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proline content was 45.9% (KN9204) and 15% (LH2) higher under PRD”
e1“The soluble sugars content of leaves of KN9204 was higher under PRD than FI”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Proline content was 15% higher in LH2 under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Material
- LH2e0
- Treatment
- PRDe0
- Outcome
- proline contente0
- Direction
- highere0
- Value
- 15%e0
- Comparator
- FIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the proline content was 45.9% (KN9204) and 15% (LH2) higher under PRD”
e1“The soluble sugars content of leaves of KN9204 was higher under PRD than FI”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Stomatal density increased under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe0
- Outcome
- Stomatal densitye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal density increased under PRD”
t0“winter wheat ( Triticum aestivum L.)”
Claim · model-written summary
Stomatal width and area declined under PRD.
- Taxon
- winter wheatTriticum aestivumt0
- Treatment
- PRDe0
- Outcome
- stomatal width and areae0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal density increased under PRD, but stomatal width and area declined”
t0“winter wheat ( Triticum aestivum L.)”
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