阿特拉津及其降解菌对水稻种子发芽率的影响

为了促进阿特拉津降解菌的应用功能,以水稻种子为材料,用自来水、含有一定量的阿特拉津基础盐缓冲液及其降解菌溶液对水稻种子进行发芽试验,并计算发芽率,利用生物统计学方法对试验结果进行统计分析。结果表明:阿特拉津浓度在1mg·(100mL)~(-1)时,水稻种子的发芽率显著低于对照组;阿特拉津浓度在10和50mg·(100mL)~(-1)时,发芽率极显著地低于对照组。在阿特拉津降解菌存在的条件下,阿特拉津浓度为1mg·(100mL)~(-1)的发芽率显著高于对照组,阿特拉津浓度为10mg·(100mL)~(-1)和50mg·(100mL)~(-1)的发芽率极显著高于对照组。说明阿特拉津降解菌能够降解阿特拉津,从而缓解了阿特拉津对水稻种子发芽的抑制作用。

Effect of Atrazin and Its Degradation Bacteria on Germination Rate of Rice Seeds

In order to promote the application of atrazine degrading bacteria,taking rice seeds as the material,the germination of rice seeds was tested with tap water,a certain amount of atrazine and its degradation bacteria solution,and the germination rate was calculated.Then,the biometric method was used to analyze the test results.The results showed that when the concentration of atrazine was 1 mg·(100 mL).-1,the germination rate of rice seeds was significantly lower than that of the control group;when atrazine concentration was 10 mg·(100 mL).-1 and 50 mg·(100 mL).-1,the germination rate was extremely significantly lower than that of the control group.In the presence of atrazine degrading bacteria,the germination rate was significantly higher than that of the control group when atrazine concentration was 1 mg·(100 mL).-1.When atrazine concentration was 10 mg·(100 mL).-1 and 50 mg·(100 mL).-1,the germination rate was extremely significantly higher than that of the control group.The results indicated that atrazine degrading bacteria could degrade atrazine,which alleviated the inhibition effect of atrazine on rice seed germination.