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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

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    Abstract - Issue Nov 2010, 31 (6)                                     Back


abstract_01

Effect of calcium against salinity-induced inhibition in growth, ion accumulation

and proline contents in Cichorium intybus L.

 

Anjum Arshi1, Altaf Ahmad1, Ibrahim M. Aref2 and Muhammad Iqbal*1,2

 

1Department of Botany, Faculty of Science, Jamia Hamdard, New Delhi - 110 062, India

2Department of Plant Production, College of Food and Agricultural Sciences, King Saud University, Riyadh - 11451, Saudi Arabia

 

(Received: September 07, 2009; Revised received: February 15, 2010; Accepted: February 26, 2010)

 

Abstract: This study assesses the effect of NaCl (80 and 160 mM) and CaCl2 (10 mM) solutions, alone and in combination, to 30-day-old seedlings of Cichorium intybus L. Observations were made at 30 day intervals from the time of treatment till harvest (180 days after sowing). Application of NaCl resulted in significant decreases in lengths of root and stem, in dry weights of root, stem and leaves and in the leaf area, as compared with control. The reduction was less with the combined application of NaCl and CaCl2 than with the NaCl treatment alone. On the contrary, treatment of CaCl2 alone promoted the above variables. Proline content in the leaves was enhanced with NaCl and CaCl2 alone as well as with the NaCl + CaCl2 treatments; the maximum (six-fold) enhancement was observed with the combined treatments, compared with NaCl (four-fold increase) and CaCl2 (two-fold increase) alone. The sodium (Na+) and Chloride (Cl) contents in different plant parts increased both with NaCl and with NaCl + CaCl2 treatments. The maximum accumulation was observed in leaves, followed by that in stem and root. The potassium (K+) and calcium (Ca2+) contents decreased under NaCl stress, but increased with CaCl2 treatment. Thus, calcium ameliorated the deleterious effects of NaCl stress and stimulated the plant metabolism and growth.

Key words: Calcium chloride, Cichorium intybus L., Growth regulation, Sodium chloride, Salinity stress

PDF of full length paper is available online

 

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