黄芩生长与黄芩苷积累规律研究

试验研究了黄芩愈伤组织和栽培黄芩的生长特性和黄芩苷积累规律.研究表明,黄芩愈伤组织的生长和黄芩苷的积累并不同步,而是先生长后合成.栽培黄芩在6～7月和8～9月有两个生长高峰期,其中6～7月的黄芩地上部分增长量最为显著,增长了582%,在此期间主要进行初级代谢,在9～10月,根部的黄芩苷含量快速积累,其含量提高了76.4%,而茎叶中的黄芩苷含量均明显减小,分别减少了33.8%和21.5%,说明黄芩生长由初级代谢向次级代谢快速转化,这与在黄芩愈伤组织中的积累规律非常相似.

Study on the Growth and Baicalin Accumulation in Scutellaria Baicalensis Georgi

The growth characteristics and baicalin accumulation were investigated in both Scutellaria ba-icalensis Georgi callus and Scutellaria baicalensis Georgi. The results suggested that the growth of Scutellaria baicalensis Georgi callus and the baicalin synthesis were not at the same time, callus growed firstly and then synthesized its secondary metabolism products. June and August were peak times for the grouth of this plant. The biomass was increased by 582% from June to July in the aboveground of Scutellaria baicalensis Georgi and the primary metabolism was mainly carried out. Between September and October,the content of baicalin in the roots was accumulated greatly, which was increased by 76. 4% compared with September but the content of baicalin in the stems and leafs reduced obviously, respectively 33. 8% and 21. 5% and it suggested that it was rapidly transformed from primary metabolism to secondary metabolism during the stage, which was very similar to the accumulation regularity of Scutellaria baicalensis Georgi callus.