Differential Responses in Potassium Absorption and Use Efficiencies in the Halophytes<i>Catapodium rigidum</i>and<i>Hordeum maritimum</i>to Various Potassium Concentrations in the Medium
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- Hafsi Chokri
- Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie à la Technopole de Borj Cédria
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- Atia Abdallah
- Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie à la Technopole de Borj Cédria
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- Lakhdar Abdelbasset
- Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie à la Technopole de Borj Cédria
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- Debez Ahmed
- Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie à la Technopole de Borj Cédria
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- Abdelly Chedly
- Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie à la Technopole de Borj Cédria
書誌事項
- タイトル別名
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- Differential Responses in Potassium Absorption and Use Efficiencies in the Halophytes Catapodium rigidum and Hordeum maritimum to Various Potassium Concentrations in the Medium
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説明
The changes in biomass production, root length, mineral nutrition, potassium absorption efficiency (KAE), and potassium use efficiency (KUE) of the halophytes Catapodium rigidum and Hordeum maritimum in response to potassium availability were assessed under natural conditions. Plants were cultivated in the greenhouse of the experimental station of the Biotechnology Centre of Borj Cédria (a Mediterranean coastal area) 30 km south-east of Tunis for four months from the autumn to winter of 2007–2008. H. maritimum biomass production was not significantly affected by the K+ concentration, but C. rigidum growth was increased significantly with increasing K+ concentration in the medium. Root/shoot dry weight ratio remained constant in C. rigidum, but decreased significantly at 1000 and 3000 µM K+ in H. maritimum. KAE increased but KUE decreased significantly with increasing K+ concentration in the medium in both species. However, KAE was higher in H. maritimum than in C. rigidum showing a contrasting response to K+ concentration between the two species. Overall, the maintenance of a cationic balance may be explained by cation antagonism. The lower K+ requirement of H. maritimum to express its optimal growth can be attributed to its higher efficiency to acquire and transfer K+ to shoots.
収録刊行物
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- Plant Production Science
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Plant Production Science 14 (2), 135-140, 2011
日本作物学会
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詳細情報 詳細情報について
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- CRID
- 1390001204467214208
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- NII論文ID
- 130004462226
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- ISSN
- 13491008
- 1343943X
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可