2.4. Effect of IBA concentration on root induction
Shoots from the best cytokinin treatment and obtained at the end of the elongation stage with at least four leaves were individually placed inside glass test tubes (i.e. 2.5 cm in diameter and 15 cm in height) containing 10 ml of MS medium supplemented with 0, 0.1, 0.5 and 1 mg l−1 of IBA. Ten replicated test tubes were used in each medium treatment. The percentage of shoots producing roots, as well as the number and length of the induced roots were recorded after 30 days.