Journal of Stress Physiology & Biochemistry, Vol. 7, No. 4,
2011, pp. 292- 300. ISSN 1997-0838
Original Text Copyright (cc) 2011 by Saleh
Ion partitioning and Mg2+/Na+ ratio under salt stress application in cotton
Basel Saleh
Department of Molecular Biology and Biotechnology, AECS, P.O. Box 6091, Damascus, Syria
*E-mail: ascientific@aec.org.sy
Fax: 0096311-6112289
Received September 29, 2011
The response of five cotton (Gossypium hirsutum
L.) varieties Aleppo118 (A118), Aleppo33/1 (A33/1), Aleppo90 (A90),
Raqqa5 (Raq5) and Deir-Ezzor22 (DE22) to salt stress (0, 50, 100 and
200 NaCl) was studied in a pot experiment, in terms of their ionic
distribution for 56 days. Leaves and roots of DE22 exhibited the lowest
Na+ and Cl- and the highest leaf Mg2+ contents conversely to A118. based on this investigation, there was no relationship between Ca2+ content and salt tolerance of different cotton varieties. Leaf and root Mg2+/Na+
ratios were decreased as salinity level increased for all tested
varieties. In this respect, the highest value for the previous
indicators was recorded in DE22 while the lowest one was recorded in
A118. Thereby, among all tested varieties, DE22 variety relatively
performed better under salinity compared to the other varieties.
Key words: Ion / Content / Cotton / Mg2+ / Na+ / Salt stress / Variety
