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1 July 2006 ADVENTITIOUS SHOOT REGENERATION OF SCOTCH SPEARMINT (MENTHA×GRACILIS SOLE)
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Abstract

The effect of different cytokinins on in vitro adventitious shoot regeneration from internodal explants of Mentha×gracilis Sole (scotch spearmint) was investigated. Murashige and Skoog (MS) medium containing 100 mg l−1 myo-inositol, 0.4 mg l−1 thiamine-HCl, 2.0% (w/v) sucrose, 10% (v/v) coconut water and supplemented with 4.5 μM thidiazuron (TDZ) was effective in inducing adventitious shoot formation from callus. The greatest percentage of explants with shoots (85%) with the highest mean number of shoots per explant (29) was obtained with explants from the 1st and the 2nd internodes from 2-wk-old stock plants growing on a medium containing MS basal salts, 2% sucrose, 100 mg l−1 myo-inositol, 0.4 mg l−1 thiamine-HCl, at TDZ 4.5 μM and 10% (v/v) coconut water and solidified with 0.2% (w/v) phytagel. The regenerated shoots rooted on a medium containing MS basal salts, 100 mg l−1 myo-inositol, 0.4 mg l−1 thiamine-HCl, 2.0% sucrose, and 0.054 μM naphthalene acetic acid (NAA). Micropropagated plantlets were transplanted into soil and acclimated to greenhouse conditions. This is the first report describing adventitious shoot regeneration of scotch spearmint.

CHARLESON R. POOVAIAH, STEPHEN C. WELLER, and MATTHEW A. JENKS "ADVENTITIOUS SHOOT REGENERATION OF SCOTCH SPEARMINT (MENTHA×GRACILIS SOLE)," In Vitro Cellular and Developmental Biology - Plant 42(4), 354-358, (1 July 2006). https://doi.org/10.1079/IVP2006783
Received: 26 September 2005; Accepted: 1 May 2006; Published: 1 July 2006
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