Effects of Boron on the Antioxidant Enzymes Activity of Quinoa
To evaluate the impact of boron(B)on the antioxidant enzymes(SOD,POD and CAT)in quinoa leaves,a pot experiment was conducted.In this experiment,three varieties of quinoa(Jinli No.1,Jinli No.2 and Jinli No.3)were selected,and quinoa leaves surfaces were treated with a spray containing 0%(CK),0.1%(B1),0.2%(B1),and 0.3%(B3)of B for each variety quinoa for 2 times at elongation period.The results indicated that the stress resistance of quinoa improved with different boron.The variation of SOD,POD and CAT activities were observed in response to different boron levels.At the same growing period,the SOD activity in the quinoa leaves decreased,the POD ac-tivity first increased and then decreased,and the CAT activity increased with the increasing boron concentrations.At the same boron concentra-tion,with the extension of the growing period,these antioxidant enzymes first increased and then decreased.The SOD activities in the three va-rieties of quinoa leaves were the highest in the grouting period,and they were 21.24%,15.26%and 10.33%lower at 0.3%B than that of CK,respectively.On the whole,the POD activities in the three varieties of quinoa leaves were the highest in the heading period,and they increased by-3.99%,-5.21%and 5.28%at 0.3%B than that of CK,respectively.The CAT activity in the three varieties quinoa leaves was the high-est in the grouting period,and the CAT activity at 0.3%B were 25.31%,26.19%and 29.48%higher than that of CK,respectively.At 0.3%B treatment,the SOD and POD activity in the three types of quinoa leaves were lower than those of CK,while CAT activity was higher.Boron was helpful to regulate the antioxidant enzyme level,remove reactive oxygen species and alleviate the adverse effects of boron deficiency on the growth of quinoa.The physiological characteristics in the three types of quinoa leaves at 0.3%B worked best.Above all,in actual production,0.3%B was the best choice.
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NSTL
万方数据
维普
