Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv.) is a rare, precious, and endemic herb in Vietnam in terms of medicinal treasures. This herb’s in vitro propagation has significant implications for both conservation and production. The promising research investigated how culture conditions can influence the growth of Ngoc Linh ginseng in vitro. Ngoc Linh ginseng plantlets have served as materials for research and culture. The effects of light intensities, day-night temperatures, and culture medium on the in vitro growth of plants received evaluation. The study found that the light intensity at 20 μmol.m^-2.s^-1, the day-night temperature of 23 °C–15 °C and the SH medium were optimal for the growth of Ngoc Linh ginseng in vitro. These results are essential for enhancing future in vitro Ngoc Linh ginseng growth.

Keywords: Ngoc Linh ginseng, light intensity, temperature, medium, in vitro propagation

Key findings: The latest study sheds light on certain primary culture conditions discovery directly affecting the growth of in vitro Ngoc Linh ginseng (Panax vietnamensis Ha et Grushv.) in Vietnam. The research successfully determined the optimal light intensities at 20 μmol.m^-2.s^-1, day-night temperatures of 23 °C–15 °C, and culture SH medium to grow in vitro Ngoc Linh ginseng. Furthermore, these findings could potentially improve the in vitro Ngoc Linh ginseng growth for production, preservation, and other extensive research in the future.