[Effects of angustmycin on callus occurrence and proliferation of Panax notogingseng in vitro].

In order to explore quick, efficient inducement and proliferation of Panax notogingseng callus, the stem sections were taken as explants in the following 5 groups of medium: 1. MS + 2,4-D 2 mg/L (CK), 2. MS + 2,4-D 2 mg/L + N6-BA 2 mg/L, 3. MS + 2,4-D 2 mg/L + KT 2 mg/L, 4. MS + 2,4-D 2 mg/L + ZT 2 mg/L, 5. MS + 2,4-D 2 mg/L + LFS 2 mg/L. The results showed: 1. LFS (Lingfasu, a new kind of CTK) was able to promote the callus formation earlier 1-2 week than CK and to raise the rate of induced callus as high as 81%, higher 30% than that on other 4 mediums; 2. On medium 5, the fresh weight of callus increased 360.2% after being cultured 40 d, on other 4 mediums increased only 13.4%-21.8%. At the same time, 1 g callus cultured 40 d could obtain dry material 81.5 mg on medium 5, but on other 4 mediums only 21.5-25.9 mg; 3. The callus cultured on medium 5. continual generation to generation could live as long as more than 3 years, on other 4 mediums the callus hardened and aged quickly.