Fig. 2

Development of various explants of R. illyricus on B₅ mineral medium with MS micronutrients and various PGR combinations after 6 weeks of cultivation in A) photoperiod or B-F) darkness. (A) Apical buds on medium supplemented with 3.2 mg L^− 1 NAA and 5.0 mg L^− 1 kinetin; callus on the surface of (B) leaf and (C) fragments of stolons; (D) receptacle on medium with 8.0 mg L^− 1 picloram and 8.0 mg L^− 1 kinetin; (E) developing tubers on fragments of stolons on medium with 4.0 mg L^− 1 2,4-D and 8.0 mg L^− 1 kinetin; (F) callus of stolon-origin on medium with 8.0 mg L^− 1 picloram and 5.0 mg L^− 1 kinetin, bar = 1 cm