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ＬａＣｌ_３、ＰｒＣｌ_３浸种后使油松幼苗超氧物歧化酶（ＳＯＤ）活性增加，其中ＬａＣｌ_３比ＰｒＣｌ_３处理效果明显。经聚丙烯酰胺凝胶电泳分析表明，适当浓度的ＬａＣｌ_３和ＰｒＣｌ_３均能诱导油松幼苗产生新的ＳＯＤ同工酶，并且使某些同工酶酶带加强。ＬａＣｌ_３诱导产生阳极和阴极ＳＯＤ同工酶，ＰｒＣｌ_３诱导产生阳极ＳＯＤ同工酶。
The activity of superoxide dismutase (SOD) of Pinus tabulaeformis seedlings increased after soaking with LaCl_3 and PrCl_3, and the effect of LaCl_3 was stronger than that of PrCl_3. Polyacrylamide gel electrophoresis analysis showed that LaCl3 and PrCl3 could induce the production of new SOD isozymes and increase some isozymes. LaCl 3 induced the production of anode and cathode SOD isozymes, and PrCl 3 induced the production of anodic SOD isozymes.