Resulting calli were excised, transferred, to jars
containing 25ml MS basal salts medium supplemented
with 2.0 mg l-1 benzylaminopurine + 0.5 mg l kinetin + 0.5
mg l naphthalene acetic acid + 30 g l-1 sucrose + 8 g l-1
agar 30 g l-1 for shoot initiation where PEG (6000) (0, 0.5,
1.0, 1.5, 2.0%) has been added for four weeks. The jars
were placed in a growth chamber under fluorescent light
and at an ambient temperature of 25 ± 2ºC. The medium
was changed in 15 days and after four weeks, calli with
clearly differentiated shoots were transferred to rooting
media. Rooting was initiated on half strength MS medium
supplemented with 3 mg l-indole-3-butyric acid (IBA)
under the same conditions. Regenerating calli, showing
shoot and root formations, were transferred to MS basal
medium with no phytohormones, but PEG stress to sustain
growth of plantlets for four weeks.