書誌事項
- タイトル別名
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- Understanding crop responses to elevated CO_2 at the field scale by using free-air CO_2 enrichment (FACE) systems
- カイホウケイ タイキ CO ₂ ゾウカ(FACE)ジッケン ニ ヨル サクモツ ノ コウCO ₂ オウトウ ノ カイメイ
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説明
It is well known that increasing CO_2 concentration stimulates plant photosynthesis at the short-term scale. To understand plant responses to elevated CO_2 concentration at the long-term scale under the field conditions, free-air CO_2 enrichment (FACE) experiments have been conducted for various crop species. The FACE experiments have shown that photosynthetic capacity often, but not always, declined during the prolonged exposure to elevated CO_2, known as an acclimation response. At the whole plant scale, rice biomass was stimulated by elevated CO_2 during the early growth stage, but stimulation ratio gradually decreased with the plant stage. The early growth stimulation could be related with enhanced nitrogen uptake, leaf area expansion and canopy photosynthesis. As the growth stage progressed, a decrease in leaf nitrogen concentration became obvious under FACE conditions, and stimulation ratios of biomass, nitrogen uptake and leaf area were gradually declined. The mechanisms of these acclimation responses are still uncertain, but nitrogen status of the whole plant plays a major role. In addition, the concepts of sink-source or carbon-nitrogen balance are useful for understanding the mechanisms of acclimation response to elevated CO_2, but need to be tested quantitatively by using the FACE systems and mechanistic crop growth models.
収録刊行物
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- 植物の生長調節
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植物の生長調節 47 (1), 10-16, 2012
一般社団法人 植物化学調節学会
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詳細情報 詳細情報について
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- CRID
- 1390001205087816960
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- NII論文ID
- 110009457005
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- NII書誌ID
- AA11550064
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- ISSN
- 21896305
- 13465406
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- NDL書誌ID
- 023829713
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
