欧李扦插影响因子及生根机理的研究

1材料与方法 1．1插穗采集及苗床处理2008年5月采集镜泊湖风景区欧李植株，选取当年生嫩枝进行扦插。枝条要求无病虫害，节间短，有光泽，生长健壮。插穗长8～10cm，保证有2—3个完整且饱满的芽。扦插前用利刀将插穗下端离节0．2em处削成45。斜面，存放于阴凉处。剪好的插穗以50枝为一捆，浸入水盆保湿或浸入药液处理。

Study on the Influencing Factors and the Root Mechanism in Cutting Process of Prunus humilis(Bge).Sok

A procedure for cutting Prunus humilis(Bge).Sok was comprehensively studied in this paper. It was found that the key factors involved in this procession were medium, rooting accelerator, concentration of rooting accelerator and type of shoot. The results showed that sand was used as mediums; Treatment with 1 000 mg/L ABT rooting powder No.2 and semi-woody shoots were the optimal materials for cutting, and the rooting rate reached 88.1%. Anatomical study on rooting of Prunus humilis(Bge).Sok cutting has been carried out by the paraffin section method. The observation result shows that the adventitious root primordium of Prunus humilis(Bge).Sok cutting belongs to the type of induced root primordium. The adventitious root primordium originates from the cross region of vascular cambium and pith rays.