biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 38:261, 1996 | DOI: 10.1007/BF02873857

Effects of salinity on uptake and distribution of Na+, Cl- and K+ in two wheat cultivars

S. K. Sharma1
1 Division of Crop Improvement, Central Soil Salinity Research Institute, Karnal, India

Plants of two wheat (Triticum aestivum L.) cultivars differing in salt tolerance were grown in sand with nutrient solutions. 35-d-old plants were subjected to 5 levels of salinity created by adding NaCl, CaCl2 and Na2SO4. Growth reduction caused by salinity was accompanied by increased Na+ and Cl- concentrations, Na+/K+ ratio, and decreased concentration of K+. The salt tolerant cv. Kharchia 65 showed better ionic regulation. Salinity up to 15.7 dS m-1 induced increased uptake of Na+ and Cl- but higher levels of salinity were not accompanied by further increase in uptake of these ions. Observed increases in Na+ and Cl- concentrations at higher salinities seemed to be the consequence of reduction in growth. Uptake of K+ was decreased; more in salt sensitive cultivar. This was also accompanied by differences in its distribution.

Keywords: ion distribution; ion exclusion; sensitive; tolerant cultivars

Received: July 18, 1995; Accepted: September 6, 1995; Published: June 1, 1996  Show citation

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Sharma, S.K. (1996). Effects of salinity on uptake and distribution of Na+, Cl- and K+ in two wheat cultivars. Biologia plantarum, 38(2), 261. doi: 10.1007/BF02873857
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