文献类型： 外文期刊

作者： Gu, M. F. ¹ ; Li, N. ² ; Shao, T. Y. ² ; Long, X. H. ² ; Brestic, M. ³ ; Shao, H. B. ³ ; Li, J. B. ⁴ ; Mbarki, S. ⁷ ;

作者机构： 1.Jiangsu Acad Agr Sci, Agr Expt Stn Xinyang, Yancheng, Peoples R China

2.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing, Jiangsu, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agrobiotechnol, Nanjing, Jiangsu, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Vegetable Res, Nanjing, Jiangsu, Peoples R China

5.Slovak Univ Agr, Dept Plant Physiol, Nitra, Slovakia

6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yanatai, Peoples R China

7.Technopk Borj Cedria, Lab Plant Extremophiles, Ctr Biotechnol, Hammam Lif, Tunisia

关键词： salinity;Brassica oleracea L. var. capitata;salt tolerance;sea salt stress;ion uptake

期刊名称：PLANT SOIL AND ENVIRONMENT （ 影响因子：1.799； 五年影响因子：2.169 ）

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收录情况： SCI

摘要： Cabbage seedlings were grown hydroponically to study the effects of different concentrations of seawater on the seedling growth, ion content under one-fourth strength Hoagland's nutrient solution in the greenhouse. The biomass of various organs of cabbage seedlings as well as the whole plants was significantly higher in the treatments with 1 g and 2 g sea salt/L than the no-salt control, but the treatments with 4, 5 or 6 g sea salt/L caused a decrease in growth. Root/shoot ratio remained at the level of control regardless of the sea salt treatment. Na+ and Cl- concentration in different parts of cabbage seedlings increased significantly, whereas K+ and Ca2+ concentration generally increased at low concentrations of sea salt and then decreased with increasing seawater concentration. Sodium and K+ concentrations were significantly higher in the stems than roots and leaves regardless of the sea salt treatment. The sea salt treatment increased Mg2+ concentration in stems and leaves of cabbage seedlings. An increase in Na+ and Cl- concentration in roots, stems and leaves of cabbage seedlings was the main contributor to declining ratios of K+/Na+, Ca2+/Na+ and Mg2+/Na+. The obtained data suggest that cabbage seedlings have strong ability to sustain seawater stress by the regulation of transport and distribution of ions.