侧根对防风药材质量影响机理及生长调节剂应用的研究

目的:探讨侧根对质量影响机理及生长调节剂对防风药材质量。方法:以不同浓度的奈乙酸(NAA)、赤霉素(GA)处理种苗后移栽,秋季采收药材的根,测量药材直径及各部位所占的比例,并以高效液相色谱法测定根中的四种色原酮成分。结果:25mg/kg、100mg/kg、500mg/kg的NAA可提高移栽防风根中四种色原酮类活性成分的含量,其中500mg/kg NAA的四种色原酮总含量最高。4种色原酮含量在韧皮部为0.6784%,木质部为0.1153%,全根为0.9480%,侧根为1.4433%。侧根中韧皮部的比例为0.861%,主根的0.684%。结论:4种色原酮类活性成分主要存在于韧皮部,侧根中韧皮部比例大,NAA处理可使防风产生大量侧根,从而提高防风药材的质量。

Effects of Lateral Roots and Growth Regulator on the Quality of Saposhnikovia Divaricata

Authors studied the effects of lateral roots and Growth Regulators on the quality of the Saposhnikovia divaricata. In the study,the seedlings of Saposhnikovia divaricata soaked by NAA and GA in different concentrations were trans- planted,and their roots were collected in autumn.The diameter of the roots,and different parts of the roots,were mea- sured the concentration of the four chromes were determined using HPLC.Under the dosages of 25mg/kg,100mg/kg, and 500mg/kg of NAA and GA applied in transplantation...