Abstract：
:Elevated CO2 (eCO2 ) generally promotes increased grain yield (GY) and decreased grain protein concentration (GPC), but the extent to which these effects depend on the magnitude of fertilization remains unclear. We collected data on the eCO2 responses of GY, GPC and grain protein yield and their relationships with nitrogen (N) application rates across experimental data covering 11 field grown wheat (Triticum aestivum) cultivars studied in eight countries on four continents. The eCO2 -induced stimulation of GY increased with N application rates up to ~200 kg/ha. At higher N application, stimulation of GY by eCO2 stagnated or even declined. This was valid both when the yield stimulation was expressed as the total effect and using per ppm CO2 scaling. GPC was decreased by on average 7% under eCO2 and the magnitude of this effect did not depend on N application rate. The net effect of responses on GY and protein concentration was that eCO2 typically increased and decreased grain protein yield at N application rates below and above ~100 kg/ha respectively. We conclude that a negative effect on wheat GPC seems inevitable under eCO2 and that substantial N application rates may be required to sustain wheat protein yields in a world with rising CO2 .
journal_name
Glob Chang Bioljournal_title
Global change biologyauthors
Pleijel H,Broberg MC,Högy P,Uddling Jdoi
10.1111/gcb.14586subject
Has Abstractpub_date
2019-05-01 00:00:00pages
1868-1876issue
5eissn
1354-1013issn
1365-2486journal_volume
25pub_type
杂志文章abstract：:A global warming-induced transition from glacial to periglacial processes has been identified in mountainous regions around the world. Degrading permafrost in pristine periglacial environments can produce acid rock drainage (ARD) and cause severe ecological damage in areas underlain by sulfide-bearing bedrock. Limnolo...
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pub_type： 杂志文章
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pub_type： 杂志文章
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pub_type： 评论,信件
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pub_type： 杂志文章
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pub_type： 杂志文章,评审
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pub_type： 杂志文章
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journal_title：Global change biology
pub_type： 杂志文章
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更新日期：2018-04-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Global change biology
pub_type： 杂志文章
doi：10.1111/gcb.15418
更新日期：2021-02-01 00:00:00
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journal_title：Global change biology
pub_type： 杂志文章,meta分析,评审
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更新日期：2017-10-01 00:00:00
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pub_type： 杂志文章
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更新日期：2013-11-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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