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

M.F. Gu, N. Li, T.Y. Shao, X.H. Long, M. Brestič, H.B. Shao, J.B. Li and S. Mbarki
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M.F. Gu: Agricultural Experimental Station of Xinyang, Jiangsu Academy of Agricultural Sciences, Yancheng, P.R. China
N. Li: College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P.R. China
T.Y. Shao: College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P.R. China
X.H. Long: College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, P.R. China
M. Brestič: Institute of Agro-biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, P.R. China
H.B. Shao: Institute of Agro-biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, P.R. China
J.B. Li: Institute of Vegetable Research, Jiangsu Academy of Agricultural Sciences, Nanjing, P.R. China
S. Mbarki: The Laboratory of Plant Extremophiles, Biotechnology Center at the Technopark of Borj-Cedria, Hammam-Lif, Tunisia

Plant, Soil and Environment, 2016, vol. 62, issue 7, 314-320

Abstract: 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.

Keywords: salinity; Brassica oleracea L. var. capitata; salt tolerance; sea salt stress; ion uptake (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:62:y:2016:i:7:id:771-2015-pse

DOI: 10.17221/771/2015-PSE

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