The chitosan-oligosaccharides elicitor was made with H2O2 to decompose chitosan,and induction of the elicitor to disease resistance of poplar callus was studied.

• 以壳聚糖(脱乙酰几丁质)为原料,采用H2O2氧化法降解壳聚糖制备低聚壳聚糖激发子,通过诱导处理杨树愈伤组织,研究了低聚壳聚糖激发子对杨树抗病性的诱导作用。