Direct plantlet regeneration from the tuber of Stachys sieboldii
Plant Cell, Tissue and Organ Culture 71: 259-262, 2002.，-0001，（）：
Development of an efficient in vitro plantlet regeneration system from tubers of Stachys sieboldii (Miq.), a traditional Chinese medicinal plant and vegetable, is described. Adventitious shoots with an average of 9.1 (after 4 weeks of incubation) shoots per explant were obtained from 60.4% of tuber explants cultured on Murashige and Skoog (MS) medium containing 1.0mgl−1 thidiazuron (TDZ), and after another 4 weeks of incubation on growth regulator free MS medium, 33.5 shoots per explant were achieved. Subcultures showed results that were similar to those of the initial culture. Excised shoots were rooted both on MS and on half strength MS medium with a frequency of about 95%. Excised shoots were also rooted ex vitro by directly planting them into cups containing sand. Regenerated plants with well developed shoots and roots were successfully transplanted to soil, after which they developed free of abnormalities.
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