The effect of growth regulators on shoot propagation and rooting of common lavender (Lavandula vera DC)
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Nodal segments from micropropagated plants were used to evaluate the effect of growth regulators on the in vitro shoot proliferation and rooting of Lavandula vera DC. The highest multiplication rate was obtained using MS medium supplemented with 1.0 mg l-1 of TDZ (2.25 μM) or BA (2 μM). Hyperhydricity occurred at high concentrations of these growth regulators. Rooting of the plantlets was obtained in all the media evaluated. However, rooting rates and root growth increased with increased concentrations of NAA and the reduction of the salt strength of the media. The plantlets were successfully transferred to soil and grown to maturity, exhibiting a normal development, with high uniformity and no evidences of somaclonal variation.
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