Abstract: The roles of auxin played in the propagation of asparagus were studied. Exogenous auxin was necessary for the formation of calli, while it wasn’t necessary during proliferation of shoots. The best induction of shoots was achieved with 0.05 mg/L NAA, and more calli induction needed over 1.0 mg/L NAA. The concentration of NAA in the regeneration of shoots hadn’t further influence on rooting. Comparing the four sorts of auxins, NAA, IAA, IBA and 2, 4-D during roots induction of asparagus, IBA is the best choice both in the quality and rate of rooting.

Key words: auxin, tissue culture, rooting, asparagus, auxin, tissue culture, rooting