COMPARATIVE ANALYSIS OF DIFFERENT ROSE CULTIVARS (ROSA HYBRIDA L.) ROOTING USING CONVENTIONAL AND BIOTECHNOLOGY APPROACHES
KRASIMIRA UZUNOVA*
Department of Genetics and plant breeding, Faculty of Agronomy, Agricultural University, 4000 Plovdiv, Blv. Mendeleev 12, Bulgaria
*Corresponding author: uzunova@au-plovdiv.bg
Keywords: green cuttings, indole-3-butyric acid, micropropagation, Rosa hybrida L.
Abstract: The rapid and efficient propagation of plant material obtained is an important stage in the breeding of flower species. The purpose of this study is to make a comparative assessment of the significance of differences from the application of two of the widely used practical approaches for propagation of four ornamental roses cvs (Rosa hybrida L.) – Anny, Trimontium, Peace and Baccara. The auxin indole-3-butyric acid (IBA) at concentration of 0.5 mg/l was used as a growth regulator in both methods applied – conventional and biotechnological. The percentage of rooting recorded is over 50% in both types of propagation. This rate in the in vitro propagation is between 73-90% for the tested varieties of roses, while the rooting rate reached 64% when the conventional method of propagation was applied. Both approaches are used in the propagation of valuable material selection and the leading factor for implementation is the availability of financial sources.