K e y w o r d s: adventitious shoots, axillary shoots, propagation in vitro, runners ABSTRACT In this study, the influence of gibberellic acid (GA 3 ) on strawberry in vitro shoot culture growth and development was investigated. 'Senga Sengana' and 'Elsanta' clones were grown on the medium recommended by Boxus (1999), supplemented with BA (0.5 mg dm -3 ), IBA (0.1 mg dm -3 ), glucose (40.0 g dm -3 ) and GA 3 (0.1 -control, 1.0, 2.0, 5.0, 10.0 mg dm -3 ). In general, gibberellic acid improved axillary shoot elongation and reduced the growth of callus as well as the formation of roots and the development of adventitious shoots. GA 3 applied at a concentration of 1.0-2.0 mg dm -3 significantly increased the number of axillary shoots (mainly crown shoots), whereas under higher (5.0-10.0 mg dm -3 ) doses it stimulated the development of runners. It seems that a new method of strawberry micropropagation based on the multiplication of axillary crowns and runners,