Abstract
SUMMARY Selecting high-yielding cultivars under drought is an important practice to improve crop production. Canopy temperature (T) shows a relative reliable association with grain yield. In this study, we compared the suitability of canopy T and other agronomic as well as physiological traits associated with grain yield under different water regimes. Field experiments over two seasons (2011–2012 and 2012–2013) were carried out under three water regimes, represented about 64, 76 and 89% of potential evapotranspiration, with 16 local winter wheat ( Triticum aestivum L.) cultivars in each season. Results showed that cultivars with higher yield usually performed consistently lower canopy T under three water regimes, while the relationships of grain yield with other agronomic or physiological traits were more influenced by soil moisture. In addition, the relationship between canopy T and grain yield varied with different growth stages: From the time of heading to early grain filling stages, a more significant negative linear relationship ( p < 0.001) existed under the three irrigation levels.
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Claims 4
Claim · model-written summary
Higher-yielding winter wheat cultivars consistently had lower canopy temperature under three water regimes.
- Taxon
- winter wheat
Triticum aestivume0 - Material
- cultivars with higher yielde1
- Treatment
- three water regimese1
- Outcome
- canopy Te1
- Direction
- lowere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16 local winter wheat ( Triticum aestivum L.) cultivars in each season”
e1“cultivars with higher yield usually performed consistently lower canopy T under three water regimes”
Claim · model-written summary
The relationships of grain yield with other agronomic or physiological traits were more influenced by soil moisture.
- Taxon
- winter wheatTriticum aestivume0
- Treatment
- soil moisturee2
- Outcome
- relationships of grain yield with other agronomic or physiological traitse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16 local winter wheat ( Triticum aestivum L.) cultivars in each season”
e2“the relationships of grain yield with other agronomic or physiological traits were more influenced by soil moisture”
Claim · model-written summary
The relationship between canopy temperature and grain yield varied with growth stage.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- different growth stagese3
- Outcome
- relationship between canopy T and grain yielde3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16 local winter wheat ( Triticum aestivum L.) cultivars in each season”
e3“the relationship between canopy T and grain yield varied with different growth stages”
Claim · model-written summary
From heading to early grain filling, canopy temperature and grain yield had a significant negative linear relationship under the three irrigation levels.
- Taxon
- winter wheatTriticum aestivume0
- Organ / stage
- From the time of heading to early grain filling stagese4
- Treatment
- three irrigation levelse4
- Outcome
- relationship between canopy T and grain yielde3
- Direction
- negative lineare4
- Value
- p < 0.001e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16 local winter wheat ( Triticum aestivum L.) cultivars in each season”
e3“the relationship between canopy T and grain yield varied with different growth stages”
e4“From the time of heading to early grain filling stages, a more significant negative linear relationship ( p < 0.001) existed under the three irrigation levels”