Regulatory effects of brassinolide on the physiological characteristics of Festuca arundinacea, a slope protection plant, under drought stress

• LI Mingyi, 
• JIA Haoji, 
• DONG Wenhao, 
• GUO Shiwei, 
• WANG Fuhao, 
• LIU Liming, 
• XIA Dong, 
• XU Wennian