In some studies, either NAA or IAA or IBA was applied to investigate the asparagus
rooting ability. Results given by Wang et al. [2010] showed that asparagus rooting ability
had the greatest sensitivity to NAA at 0.2 mg·L-1 concentration, through which
35.5% rooting rate was obtained. But in this way a big quantity of calli was received as
well, which negatively affected to the growth of roots. On the contrary, 0.5 mg·L-1 IBA
was more beneficial to the growth of roots.