Production of Seedlings of Fast - Growth Tree of Paulownia elongata S. Y. Hu

Abstract

The major method of propagation of varieties and hybrids of Paulownia elongata is vegetative (asexual) method. Paulownia elongata can be propagated by macropropagation techniques (root cuttings, green cuttings and by micropropagation technique, tissue culture or in vitro. Today the tissue culture method is the most modern biotechnological method. In Bosnia and Herzegovina and regions of former Yugoslawia, more and more Paulownia elongata seedlings are being produced and new plantations of Paulownia elongata areestablished. This paper deals with the methods of propagation and problems in raising Paulownia elongata planting materials. The work aims to produce seedlings of fast-growth Paulownia elongata, Shan Tong hybrid and the possibility of propagation through different methods. Propagation by green cuttings, root cuttings and in vitro propagation was tested. After 15 days, the percentage of rooting for the green cuttings was 100%, and there were no dead plants, the average number of roots was 13.86 pcs per plant and roots were of different lengths. The length of the cuttings had an impact on the growth of plants because Original Research Article

Cytogenetical Studies on the Impact of Gamma Rays to Induce Variation in Vitro in Paulownia (Paulownia Tomentosa)

“…Propagation of paulownia is possible by seed, stem and root explants. The slow rate of growth and poor germination of seeds encourage the in vitro propagation of paulownia (Ipekci andGozukirmizi, 2003 andHamza, 2019).Consequently, the results showed that the tissue culture technique offers a rapid mean of propagation of paulownia by maintaining the genetic gain (Bergmann andMoon, 1997 andSalki et al, 2018). Accordingly, in this investigation, nodal explants considered an excellent explant source for direct micropropagation protocol of Paulownia tomentosa in Egypt.…”