Influence of Α-NAA for Insexual Propagation Ability of Some Medicinal Plants in Da Nang

Da Nang has a diverse and extensive source of medicinal plants. Ampelopsis cantoniensis, Curculigo orchioides, Dioscorea persimilis, and Phaeanthus Vietnamensis are valuable medicinal species with potential for development in Da Nang. The study is looking into the impact of α-NAA on their propagation ability. The experiments were set up in Randomized Complete Block design (RCBD) with 4 formulas: α-NAA content of 1,500 ppm, 1,000 ppm, 500 ppm respectively and purified water (control), 3 replications. As a result, α-NAA concentration of 1,000 ppm gives the best results for Ampelopsis cantoniensis propagation; The concentration of α-NAA 1,500ppm is most suitablefor rooting and increasing root length of Curculigo orchioides and Dioscorea persimilis; α-NAA also had an impact on cuttings of Phaeanthus Vietnamensis, in which, the concentration of 1,000-1,500 ppm showed the highest effectiveness. This results will serve as the foundation for designing experiments with optimal concentrations for their clonal propagation via cuttings method