白花龙扦插繁殖研究

为提高白花龙（Ｓｔｙｒａｘ ｆａｂｅｒｉ Ｐｅｒｋ．）繁殖效率，以１～２年生枝条为插穗，采用３因素４水平正交试验，探索不同植物生长调节剂种类、浓度和处理时间对扦插繁殖的影响．结果表明：植物生长调节剂对白花龙扦插繁殖的作用效果依次为：吲哚丁酸（Ｉｎ－ｄｏｌｅ－３－ｂｕｔｙｒｉｃａｃｉｄ，ＩＢＡ）＞吲哚－３－乙酸（Ｉｎｄｏｌｅ－３－ａｃｅｔｉｃａｃｉｄ，ＩＡＡ）＞萘乙酸（１－ｎａｐｈｔｈｙｌａｃｅｔｉｃａｃｉｄ，ＮＡＡ）＞赤霉素（ＧｉｂｂｅｒｅｌｌｉｎＡ３，ＧＡ３），其中，以浓度５００ｍｇ／ＬＩＢＡ溶液浸泡插穗３０ｍｉｎ生根效果最佳．同时，还采用单因素试验对插穗部位适宜性进行研究并观察其生根类型，结果表明白花龙不同枝条部位插穗中，上部生根效果最好，生根类型为皮部生根型．

Propagation research of cutting Styrax faeri Perk

In order to improve the reproductive efficiency of the Styrax faeri Perk., the 1 ～ 2 year old shoots were used as cuttings, and the 3 factors 4 levels orthogonal test were used to explore effects of different plant growth regulator types, concentrations and treatment time on the cutting propagation. Four kinds of growth regulators could significantly improve the cuttings rooting index, the most significant effect on cutting was the treatment of IBA ( in-dole-3-butyric acid) , followed to IAA ( indole-3-acetic acid) , NAA ( 1-naphthylacetic acid) , and GA3 ( Gibberellin A3) , and the best rooting effect was the treatment with 500 mg/L IBA for 30 min. In addition, the suitability of cutting parts was studied via single factor experiment and the rooting type was also observed. The results showed that the highest rooting rate of different branch parts was the upper part and the rooting type of S. faeri cuttings was cortex rooting.