Influence of sodium chloride on seed germination and seedling root growth of cotton (Gossypium hirsutum L.)
2008
Chachar, Q.I. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Plant Physiology and Biochemistry) | Solangi, A.G. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Plant Physiology and Biochemistry) | Verhoef, A. (University of Reading (UK). Dept. of Soil Science)
Response of cotton (Gossypium hirsutum L. cv. NIAB-78) to salinity, in terms of seed germination, seedling root growth and root Na+ and K+ content was determined in a laboratory experiment. Cottonseeds were exposed to increasing salinity levels using germination water with Sodium chloride concentrations of 0, 50, 100, 150 and 200 mM, to provide different degrees of salt stress. Germinated seeds were counted and roots were harvested at 24, 48, 72 and 96 h after the start of the experiment. It appeared that seed germination was only slightly affected by an increase in salinity (in most cases the differences between treatment were non-significant), whereas root length, root growth rate, root fresh and dry weights were severely affected, generally highly significant differences in these variables were found for comparisons involving most combinations of salinity levels.
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