Abstract
Trehalose is a stress protecting and reserve carbohydrate in a variety of organisms. The effect of trehalose on micropropagation of jojoba [Simmondsia chinensis (Link) Schneider] was investigated using a modified Murashige–Skoog as the basal medium (BM). Proliferation rate was significantly higher in explants grown on BM + 1 mM trehalose compared to that in the phytohormone control medium. In multiplication stage, shoot proliferation rate of 4.8 was achieved in BM with 4.44 μM BA and 1 mM trehalose. The rooting induction with 14.7 μM IBA had a significant effect on root regeneration; the highest rooting percentage (46.6%) was obtained with 7 days of induction. The incorporation of trehalose to the IBA-rhizogenesis media decreased basal callus but with trehalose alone, root development was scant. In vitro plants showed anatomical features typical for the acclimatization stage.
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