Journal of Stress Physiology & Biochemistry, Vol. 7, No. 4,
2011, pp. 5- 14. ISSN 1997-0838
Original Text Copyright (cc) 2011 by Basel Saleh
ORIGINAL
ARTICLE
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QueryDate : 2016-12-24
Cites : 10 |
Effect of salt stress (NaCl) on biomass and K+/Na+ ratio in cotton
Basel Saleh
Department of Molecular Biology and Biotechnology, AECS, P.O. Box 6091, Damascus, Syria
E-mail: ascientific@aec.og.sy
Received August 8, 2011
A pot experiment was conducted to evaluate performance of five Upland
cotton (Gossypium hirsutum L.) varieties, Aleppo118 (A118), Aleppo33/1
(A33/1), Aleppo90 (A90), Raqqa5 (Raq5) and Deir-Ezzor22 (DE22), grown
under different salinity concentration 0, 50, 100 and 200 mM NaCl for
56 days. Results indicated that increasing salinity decreased fresh and
dry leaf and root weights. Also, leaf K+/Na+
ratio was decreased as increasing salinity levels in all tested
varieties. This reduction for the all indicators tested was relatively
more pronounced in A118 than DE22. Thereby, DE22 variety relatively
performed better under salinity compared to the other tested varieties.
Based on this investigation, it can be concluded that DE22 and Raq5 are
relatively characterized as salt tolerant, while A90 as moderate salt
tolerant. On the other hand, A118 and A33/1 could be considered as salt
sensitive.
Key
words: Biomass, Content, Cotton, K, Na, Salt stress, Variety
