Abstract
Drought stress during reproductive development could drastically reduce wheat grain number and yield, but quantitative evaluation of such an effect is unknown under climate change. The objectives of this study were to evaluate potential yield benefits of drought tolerance during reproductive development for wheat ideotypes under climate change in Europe, and to identify potential cultivar parameters for improvement. We used the Sirius wheat model to optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites, representing major wheat growing regions in Europe. Averaged over the sites, DT ideotypes achieved 13.4% greater yield compared with DS, with higher yield stability. However, the performances of the ideotypes were site dependent. Mean yield of DT was 28-37% greater compared with DS in southern Europe. In contrast, no yield difference (≤1%) between ideotypes was found in north-western Europe. An intermediate yield benefit of 10-23% was found due to drought tolerance in central and eastern Europe. We conclude that tolerance to drought stress during reproductive development is important for high yield potentials and greater yield stability of wheat under climate change in Europe.
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Claims 6
Claim · model-written summary
Averaged over 13 European sites, drought-tolerant (DT) wheat ideotypes yielded 13.4% more than drought-sensitive (DS) ideotypes under a 2050 climate scenario.
- Taxon
- wheat
Triticum aestivume1 - Treatment
- DT ideotypese0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 13.4%e0
- Qualifier
- under a future 2050 climate scenarioe1
- Comparator
- DSe0
- Setting
- 13 contrasting sitese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DT ideotypes achieved 13.4% greater yield compared with DS”
e1“optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites”
Claim · model-written summary
Drought-tolerant wheat ideotypes also showed higher yield stability than drought-sensitive ideotypes under the 2050 scenario.
- Taxon
- wheatTriticum aestivume1
- Treatment
- DT ideotypese0
- Outcome
- yield stabilitye0
- Direction
- highere0
- Comparator
- DSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DT ideotypes achieved 13.4% greater yield compared with DS, with higher yield stability”
e1“optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites”
Claim · model-written summary
In southern Europe, mean yield of drought-tolerant wheat ideotypes was 28-37% greater than that of drought-sensitive ideotypes.
- Taxon
- wheatTriticum aestivume1
- Treatment
- DTe0
- Outcome
- yielde0
- Direction
- greatere0
- Value
- 28-37%e0
- Comparator
- DSe0
- Setting
- southern Europee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mean yield of DT was 28-37% greater compared with DS in southern Europe”
e1“optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites”
Claim · model-written summary
In north-western Europe, no yield difference (at most 1%) was found between wheat ideotypes.
- Taxon
- wheatTriticum aestivume1
- Treatment
- DTe2
- Outcome
- yield differencee0
- Direction
- no yield differencee0
- Value
- ≤1%e0
- Comparator
- DSe2
- Setting
- north-western Europee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, no yield difference (≤1%) between ideotypes was found in north-western Europe”
e1“optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites”
e2“DT ideotypes achieved 13.4% greater yield compared with DS”
Claim · model-written summary
Drought tolerance gave an intermediate yield benefit of 10-23% in central and eastern Europe.
- Taxon
- wheatTriticum aestivume1
- Treatment
- drought tolerancee0
- Outcome
- yield benefite0
- Direction
- increaseinferrede0
- Value
- 10-23%e0
- Setting
- central and eastern Europee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An intermediate yield benefit of 10-23% was found due to drought tolerance in central and eastern Europe”
e1“optimize drought-tolerant (DT) and drought-sensitive (DS) wheat ideotypes under a future 2050 climate scenario at 13 contrasting sites”
Claim · model-written summary
The authors conclude that drought tolerance during reproductive development is important for high yield potential and greater yield stability of wheat under climate change in Europe.
- Taxon
- wheatTriticum aestivume0
- Treatment
- tolerance to drought stress during reproductive developmente0
- Outcome
- high yield potentials and greater yield stabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We conclude that tolerance to drought stress during reproductive development is important for high yield potentials and greater yield stability of wheat under climate change in Europe”
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