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http://dx.doi.org/10.5010/JPB.2015.42.4.396

Plant regeneration from hypocotyls explants of Astragalus sinicus L.  

Park, Min Sun (Department of Oriental Pharmaceutical Development, Nambu University)
Choi, Pil Son (Department of Oriental Pharmaceutical Development, Medicinal Plant Transformation Center, Nambu University)
Publication Information
Journal of Plant Biotechnology / v.42, no.4, 2015 , pp. 396-400 More about this Journal
Abstract
To investigate the optimal conditions for shoot organogenesis in Astragalus sinicus L., hypocotyl explants were cultured in Murashige & Skoog's (MS) medium supplemented with 0.1, 1.0, 2.0, or 4.0 mg/L 2,4-dichlorophenoxy acetic acid (2,4-D) for 6 weeks. 2,4-D concentration significantly effected morphogenesis: some produced calli with adventitious shoots and roots, some produced calli with adventitious roots, some produced only calli, and some produced deep-brownish calli with roots. The formation of calli with shoots and/or roots was observed at lower levels of 2,4-D, whereas calli without shoots or with deep-brownish roots were formed after treatment with higher levels of 2,4-D. Also, a shoot organogenesis ability of callus clones was observed after treatment with medium with 0.1 or 1.0 mg/L 2,4-D grown in MS medium with combinations of benzyl adenine (BA) and 2,4-D for 4 weeks. Medium with a combination of BA and 2,4-D was effective for shoot formation, whereas root organogenesis from calli decreased. The greatest amount of shoot formation was obtained when calli were cultured in MS medium containing 1.0 mg/L 2,4-D and 0.5 mg/L BA. Upon shoot transfer into 1/2 MS basal medium, plantlets developed, and the plantlets grew well in soil in a greenhouse.
Keywords
Astragalus sinicus; Hypocotyl explants; Plantlets; Shoot organogenesis;
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Times Cited By KSCI : 1  (Citation Analysis)
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