Abstract
Sodium chloride tolerant cell lines of finger millet were isolated from embryogenic cultures growing on MS medium supplemented with picloram (2 mg I-1), kinetin (0.1 mg l-1) and sodium chloride (1 %) at the end of 6 passages. The sodium chloride tolerant cell lines showed better growth in comparison with control at all concentrations of sodium chloride tested, with optimum growth at 0.25 % NaCl. When the tolerant lines were grown for 3 passages in absence of NaCl, the growth was lower than that of the tolerant lines tested immediately at the end of 6 passages of selection. NaCl tolerant calli had more Na1 in comparison with control and they regenerated plants in presence of 1 % NaCl, while the control lines failed to differentiate. When screened in a hydroponics system with 1 % NaCl, the tolerant plants grew to maturity while the control plants failed to grow.
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