Figure 1

Callus and adventitious shoot regeneration of leaf explants of Hygrophila pogonocalyx cultured with different concentrations (mg/l) of plant growth regulators. L1: BA (0.1) + NAA (0.1); L2: BA (0.5) + NAA (0.1); L3: BA (1) + NAA (0.1); L4: BA (0.1) + IAA (0.1); L5: BA (0.5) + IAA (0.1); L6: BA (1) + IAA (0.1); L7: BA (0.1) + IAA (0.1) + 2iP (1) ; L8: BA (0.5) + IAA (0.1) + 2iP(1); L9: BA (1) + IAA (0.1) + 2iP (1) (bar = 1 cm).