In Liberica coffee
somatic embryogenesis, addition of auxin
to the medium, in this case 2.4-D at 1.08 mg/L
stimulated explant growth into embryogenic
callus. The nutrient requirement of explant
could be supplied by nutrients in the medium
accurately, either the substance its self or
its concentration (Fambrini et al., 2003). In
addition auxin in general has also the function
to increase the quantity of embryogenic cells
by means of stimulating multiplication cell
to produce proembryonic mass