Adventitious shoot regeneration from leaf explants of two apricot rootstocks

A plant regeneration system was developed for two Russian apricot rootstocks. For 'AP' rootstock the best regeneration rate was obtained with thidiazuron (TDZ) after 2,4-dichlorofenoxi-acetic acid (2,4-D) pretreatment. In the case of '146-2' rootstock 6-benzylamino-purine (BA) and no auxin pretreatment was required for efficient adventive shoot regeneration. In both cases 2-3 weeks of dark period was needed to induce shoot regeneration from leaf explants.