Fig. 6

The adventitious root induction of embryonic callusa: After culturing type VI callus in adventitious root induction medium for 23 d, the embryonic callus gradually became white and loose and formed many infinitive roots.b: After 60 d of continuous cultivation, the adventitious roots of embryonic callus without adventitious buds germinated in large quantities.c: After the callus that had been differentiated to form adventitious buds was cultured for 25 days, the green embryonic callus gradually changed to white, and a large number of adventitious roots were generated on it.d: The amount of adventitious roots and leaves thrived after 20 d