Abstract
Cottonhead windhairdaisy (Saussurea laniceps Hand.-Mazz.) is one of the most famous and important medicinal herbs in China. Illegal collection from wild populations is increasingly threatening the present environment of S. laniceps. Establishment of an efficient method for micropropagation is the best way to change its endangered situation. When mature seeds of S. laniceps were cultured on hormone-free MS medium, plantlets were formed from germinated seeds in 7–10 d. Then 0.5 cm × 0.5 cm leaf explants were transplanted to MS medium supplemented with 1-naphthalene-acetic acid (NAA)/2,4-D and benzyladenine (BA)/KT and callus was achieved 10 d after transfer. Shoot bud regeneration occurred from callus cultured on MS medium supplemented with different growth regulators 20 d after culturing. The regeneration percentages varied with the different components of plant growth regulators. The percent regeneration from callus pretreated at low temperature of 5°C increased significantly compared with those incubated at 23/20°C directly. Optimal regeneration was observed with explants on media supplemented with 1.5 mg·L−1 BA plus 0.2 mg·L−1 NAA. In the presence of 0.2 mg·L−1 NAA in half-strength MS, 78% of the shoots formed roots. Plantlets from explants showed 63% survival after acclimatization.
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[Supported by the National Natural Science Foundation of China (Grant No. 30271067), Fok Ying Tung Education Foundation (71030) and Key Teachers Foundation of the Educational Ministry of China]
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Chen, Yz., Li, Fl. Micropropagation and callus culture of Saussurea laniceps, an alpine medicinal plant. For. Stud. China 7, 16–19 (2005). https://doi.org/10.1007/s11632-005-0051-7
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DOI: https://doi.org/10.1007/s11632-005-0051-7