Accumulation capacity of ions in cabbage (Brassica oleracea L.) supplied with sea water

文献类型： 外文期刊

第一作者： Gu, M. F.

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

作者机构：

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 ）

ISSN：

年卷期：

页码：

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.

分类号： S

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