Suspension cells were initiated from
the regenerable callus in MS basal salts medium supplemented
with the same medium components as for callus, except that
Gelrite was omitted. ‘Peter Pears’ and ‘Jenny Lee’ suspension
cells wet-c cultured in 20 ml of MS basal salts medium supplemented
with 2 mg·liter–1 dicamba anti 0.5 mg·liter-1 2,4-D, respectively.
Callus and suspension cells were grown in the dark at 26C.
Callus was routinely transferred every month and suspension cells
every 7 days at a 1:2 dilution to fresh medium. Suspension ceils
were shaken on a gyratory shaker at 120 rpm/26C in the dark.