The stem explants showed the third highest callus inductions.
The highest callus induction in stems was obtained in the species C.
oliveri ssp. Oliveri, with frequencies 56.6% (in 2% sucrose) and 66.6%
(in 5% sucrose) in the presence of MS medium, followed by C.
specious ssp. Specious species (frequencies 43.3% and 56.6%,
respectively, for the 2% and 5% sucrose concentrations). Two
crocus species, namely, C. abantensis (Fig. 2d1-d2) and C. paschei (C.
abantensis
C. oliveri ssp. Oliveri) (Fig. 2e1-e2) displayed successful
callus induction (Table 1) but failed to develop into embryos
(Table 2), in the presence of the four nutrient media.