STUDY ON PROPAGATION OF Platanus kerrii Gagnep. BY CUTTINGS

Abstract

Platanus kerrii Gagnep (commonly known as Cho nuoc) is a large multipurpose timber species. Its wood is resistant to termite damage and is widely used in construction and furniture making. In the field of medicine, extracts from the bark of P. kerrii contain important bioactive compounds utilized in the production of pharmaceuticals for the treatment of liver cancer, bone diseases, malaria, and other ailments. The objective of this study was to determine the optimal type and concentration of plant growth regulator, rooting substrate, propagation season, and cutting type for the vegetative propagation of P. kerrii by stem cuttings. The results showed that indole - 3 - butyric acid (IBA) at a concentration of 1000 ppm yielded the best rooting performance, with a rooting rate of 78.9%, survival rate of 84.4%, an average of 5,6 roots per cutting, an average root length of 10.5 cm, and a rooting index of 58.7. The most suitable season for P. kerrii propagation was summer, with a rooting rate of 76.6%, an average of 6.9 roots per cutting, and an average root length of 11.0 cm. The best type of cutting was the apical cutting, and the most appropriate rooting substrate was black sand.