几种激发子对杨树愈伤组织保护酶活性的诱导作用

Reduction by Elicitors on Four Enzymes in Poplar Callus

以自行制备的3种激发子对杨树愈伤组织进行诱导，结果表明过氧化物酶（POD）、多酚氧化酶（PPO）、过氧化氢酶（CAT）和超氧化物歧化酶（SOD）均能被有效诱导，POD活性在诱导处理后8-10h出现最高峰PPO活性在诱导处理后3.5h出现最高峰；CAT活性在诱导处理后2h出现最高峰而SOD活性则在2．5h出现峰值。

Poplar callus was reducted by both three elicitors produced from DothioreUa gregaria. POD had their highest points at the 8th-10th hour after reduction, but PPO had the points at about the 3. 5th hour, CAT at the 2nd hour, SOD at the 2. 5 h hour.