Studying techniques for breeding Eurycoma longifolia Jack by cuttings

Abstract

Eurycoma longifolia jack is a valuable medicinal plant with a great economic value, widely distributed in Vietnam. In the wild, this species is heavily exploited, which has caused the area and reserves to drastically shrink. A clear source of high-quality seedlings will be available by perfecting the cuttings-based propagation method for Eurycoma longifolia. The experiment was carried out at the Tropical Forest Research Centre (TFRC), Pleiku city, Gia Lai province. The findings indicated that wooden stem cuttings, the growth regulator NAA 500 ppm, the cutting house temperature reaching 30 o C, and each time the spray was applied for 6 seconds, the below cuttings were immediately upper the cuttings, as well as the cutting season prior to the rainy season (March) the findings reve aled that the percentage of cuttings that the percentage that took root, the number of shoots per stem cutting, the height of the shoots, the number of roots per stem cutting, and the length of the roots all reached the highest and had statistically significant differences with the other formulas. At 90 days, the average survival rate was over 80%, and more than 78% of the cuttings had taken root. On average, there are 2 to 5 shoots per stem cutting, with a shoot height of 8.2 to 10.4 cm, and 4 - 6 roots per stem cutting, with a root length of 9.9 to 16.5 cm. This article focuses on research on techniques for breeding by stem cuttings in order to preserve and develop the gene source of the Eurycoma longifolia plant, which serves as a source of raw materials for the manufacture of medicines