Effects of different concentrations of boron on protective enzyme activity, yield and agronomic characteristics of winter rapeseed in Northwest China

Effects of different concentrations of foliar application with boron on the protective enzyme activity, yield and agronomic characteristics of winter rapeseed in cold and drought region of northwest China were studied. The results showed that proper concentrations of boron could improve the activities of protective enzyme SOD, POD, CAT, and APX. The activities of SOD, POD, CAT, and APX were highest when foliar application with 0.16% boron was carried out. The foliar application with boron treatments had significant effect on agronomic characteristics of winter rapeseed. Plant height, branch height, length of main florescence, silique of main florescence, total of plant, length of silique, seeds per silique, 1000seed weight and yield per plant were higher than the control. The yield and oil content were highest when foliar application with 0.16% boron was performed. Compared to control, yield and oil content was increased by 36.85% and 14.52% respectively. The optimized concentration of foliar application with boron is 0.16% for winter rapeseed in cold and drought region of northwest China.