Jevcsák, M.Ördögh, M.Jámbor-Benczúr, E.2021-06-282021-06-282015-04-12International Journal of Horticultural Science, Vol. 21 No. 1-2 (2015) , 43-46.1585-0404https://hdl.handle.net/2437/314813After different pre-culturing period (12, 23 or 34 days) on ½ MS medium with 1 mg l-1 paclobutrazol, 1 mg l-1 N6-benzyladenine and 0.1 mg l-1 1- naphthaleneacetic acid , 3 groups of Narcissus poeticus ssp. radiiflorus bulb scales were kept on the same medium without hormones. The results were evaluated monthly and the final one happened after 7 month. The best results were achieved due to the shortest pre-culturing period (12 days;  Group 1), with 4.9 bulblets and 4.54% hyperhydricity. The result of the second treatment (pre-culturing period of 23 days; Group 2) was not different significantly but the number of bigger bulblet were higher (4.54 bulblets). After the longest pre-culturing period (34 days; Group 3), the number of bulblets was low (3.68) and more hyperhydricity (18.18%) was detected. The highest number of roots (13.91) was observed in this group very likely due to the strong after-effect of paclobutrazol.application/pdfpaclobutrazolmultiplicationhyperhydricityNarcissusfolyóiratcikkOpen Accesshttps://doi.org/10.31421/IJHS/21/1-2./1156International Journal of Horticultural Science1-221Int. j. hortic. sci.2676-931X