丹参移栽后苗系与根系的生长关系

目的 :研究丹参生长发育规律及其与有效成分累积的关系 ,为建立科学的规范化栽培技术提供理论依据。方法 :丹参种苗移栽成活后 ,对生长一致的植株定点挂牌编号 ,每 2 0d取样 1次 ,测定各个生长发育阶段的根系与苗系的生长发育变化规律及其与丹参酮Ⅱ_A、丹参素等有效成分含量累积的关系。结果与结论 :研究发现 ,种苗移栽成活后 ,苗系首先迅速生长 ,根系的快速生长期明显滞后于苗系 ,但其生长持续时间长 ;根系数量的变化呈现双“S”型增长曲线 ,快速增长期分别出现在移栽后的 30～ 70d和 14 0～ 2 0 0d 2个时间段。丹参素含量在移栽后14 0～ 180d达到最高水平 ,丹参酮ⅡA 最高含量出现在移栽后的 10 0～ 12 0d。

The growth of Salvia miltiorrhiza seedling and root system following transplantation

OBJECTIVE: To study the relationship between plant growth and accumulation of active ingredients in Salvia miltiorrhiza. METHOD: Transplants of S. miltiorrhiza were sampled at 20 day intervals. At each stage, the growth of seedling and root system was recorded and the contents of tanshinone II (A) and salvia acid were measured. RESULT AND CONCLUSION: This study showed that the rapid growth stage of the root system lags behind that of the seedling system, but the growing period of root system lasts longer. The quantitative change of roots reveals a double "S" curve; two rapid growth stages emerge during 30 - 70 days and 140 - 200 days after the seedlings were transplanted. The content of salvia acid reaches the highest level during 140 - 180 days, whereas the content of tanshinone peaks during 100 - 120 days.