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Pak. J. Bot., 42(1): 505-511, 2010. |
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Updated: 08-03-10 | ||||
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RESPONSE OF COTTON (GOSSYPIUM HIRSUTUM L.) GENOTYPES TO SALT STRESS
HUSEYIN BASAL*
Abstract: The response of 15 cotton (Gossypium hirsutum L.) genotypes to salt stress was studied in terms of their biomass production and reduction ratios under salt stress. The cotton varieties were grown at different salt concentrations (0, 125 and 250 mM NaCl) in completely randomized split-plot design with 10 replications. Plant height, stem diameter, shoot fresh and dry weight, leaf area, and total dry weight were determined to compare their relative performance at salinity. Significant variations occurred among 15 cotton genotypes for all investigated traits with increasing salt level in growing medium. The cotton genotypes with good vegetative growth without salt stress had also good vegetative growth under salt stress. Based on biomass production and reduction ratios of cotton genotypes in salt stress conditions, it is concluded that Delta Opal, Golden West, and Deltapine 50 are salt sensitive Sahin-2000, Nazilli M 503 and TAM94L-25 are salt tolerant, while rest of the cotton genotypes are considered as moderately salt tolerant.
Department of Crop Sciences, Faculty of Agriculture, Adnan Menderes University, 09100 Aydin, Turkey. |
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