The impact of GA3 inhibitor was also investigated in asparagus rooting culture.
Saponins, the amphiphilic high molecular mass glycosides, were hypothesized to control
delivery system of GA3 in asparagus shoot elongation in tissue culture. Study conducted
by Saharan [2010] demonstrated that the optimal saponins concentration for
shoot elongation (9.0 cm) and rooting rate (100%) was 3 mg·L-1 with 0.2 mg·L-1 GA3.
However, with the same concentration of GA3, the rooting rate reduced from 100% to
55% by increasing the saponins concentration from 3 to 5 mg·L-1.