In vitro propagation of limonium wrightii (Hance) Ktze. (Plumbaginaceae), an ethnomedicinal plant, from shoot-tip, leaf- and inflorescence-node explants
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Rapid in vitro propagation of Limonium wrightii (Hance) Ktze. (Plumbaginaceae), an endangered medicinal plant, was achieved by culturing the shoot-tip (primary and lateral), leaf- and influorescence-node explants. MS (Murashige and Skoog, 1962) medium supplemented with 8.87 μMN6-benyladenine (BA) and 1.07 μM α-naphthaleneacetic acid (NAA) supported induction of adventitious shoots from the shoot-tip, inflorescence-node and middle and basal parts of leaf explants after 60 d of culture. Adventitious shoots were multiplied by subculturing on MS medium supplemented with BA (2,21–17.75 μM) in combination with NAA (1.07 μM). The percentage of explants forming shoots and the average number of adventitious shoot buds produced per explant were stimulated by increasing the strength (1/4x, 1/2x, 1x, 2x) of the MS medium. Shoots were rooted on MS basal medium with 4.92 μM indole-3-butyric acid. Plantlets with a morphologically normal appearance produced from adventitious shoots were transferred to soil and acclimated in the growth chamber for 1 mo.
Key wordsmedicinal herb Limonium wrightii micropropagation Plumbaginaceae
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