A micro-propagating system based on the young stem node segments of Sophora flavescens Ait. (Fabaceae) was established. Murashige and Skoog (MS) basal medium supplemented with 8.88μM 6-benzyladenine (BA) plus 2.69μM a-naphthalene acetic acid (NAA) and that with only 5.37μM NAA were found the best in promoting proliferation of shoots and induction of root, respectively. Percentages of shoot induction and number of shoot per explant were up to 93.4% and 4.2 and rooting rate to 82.4%, respectively. The segments of the regenerated shoots could be continuously induced to reproduce new shoots through subculture on the same medium in 30-d intervals and still kept this activity after being subcultured for 6 generations. After the regenerated plantlets were transplanted to field, they grew well, showing no any visible abnormalities.

Using apical and axillary nodes as explants, a rapid and efficient method for propagation of Amorphafruticosa L. has been developed. When grown on Murashige and Skoog (MS) medium supplemented with 8mg dm-3 benzyladenine, 100% explants responded with 4.94 shoots per explant after 6-weeks culture, and explants taken from the in vitro proliferated shoots subsequently produced multiple shoots when cultured on the same medium. The addition of casein hydrolysate (200mg dm"3) enhanced the number of shoots up to 8.77 per subculture, and coconut milk was found to promote the shoot elongation and make them grow more vigorously. 82.53% excised shoots were rooted on half-strength MS medium containing 2.0mg dm"3 indoleacetic acid after 3 weeks of incubation. After acclimatization, all of the rooted plantlets established in soil, exhibiting uniform morphological and growth characteristics.