纳米氧化钛对髯毛箬竹叶片的生理调节作用

采用0、150、300、450 mg.L-1(CK、T150、T300、T450)质量浓度的纳米TiO2对髯毛箬竹进行叶面喷施处理,探讨纳米TiO2对髯毛箬竹叶片的生理影响.结果表明,适当质量浓度的纳米TiO2处理均可以有效提高髯毛箬竹叶片的可溶性蛋白、游离氨基酸、全氮、全磷、全钾质量分数,刺激抗氧化酶活性,降低丙二醛...

Physiological Effects of Nanometer TiO2 on Indocalamus barbatus Leaves

An experiment was conducted to study the physiological effects of nanometer TiO2 on Indocalamus barbatus leaves sprayed with nanometer TiO2 at concentrations of 0,150,300,450mg·L-1(CK,T150,T300,T450).Results showed that nanometer TiO2 treatment could increase the contents of soluble protein,free amino acids,total nitrogen,total phosphorus,and total potassium in I.barbatus leaves,stimulate its antioxidant activities,and decrease MDA content.Different concentrations and time show various effects on I.barbatus leaves.Nanometer TiO2 at a concentration of 150mg·L-1 exhibited the best effect.Compared with the control,the contents of soluble protein,free amino acids,total nitrogen,total phosphorus,and total potassium of I.barbatus leaves in T150 treatment after one month of treatment increased by 13.81%,15.00%,19.62%,19.20% and 16.61% respectively,while MDA content decreased by 15.76%.After 9 days of treatment,activities of SOD and POD of I.barbatus leaves in T150 treatment increased by 20.56% and 25.89% respectively,which were significantly different from the control(p<0.05).The above results appear to indicate that exogenous nanometer SiO2 treatment could effectively improve the nutritional function of I.barbatus leaves and increase their stress tolerance.