Fig. 2

Callus of Korean pine on different combinations of PGRs in medium after 15 days. a 2,4-D + 6-BA. b IBA + 6-BA. c IBA + ABA. Bars = 5 mm (a); 1 mm (b, c)
Callus of Korean pine on different combinations of PGRs in medium after 15 days. a 2,4-D + 6-BA. b IBA + 6-BA. c IBA + ABA. Bars = 5 mm (a); 1 mm (b, c)