Table 1 showed in vitro rooting tests. In a medium without
auxin and b-cyclodextrin, no roots appeared on shoots in contrast
of previous studies where Samyn (1993) and Osorio-Rosales and
Mata-Rojas (2005) reported that N. recurvata rooted easily in the
same medium. It can be explained that the exogenous levels of
hormones added in the previous phase effect the endogenous
cytokinin to auxin ratio.