Effects of exogenous application of salicylic acid on drought performance of medicinal plant, Fritillaria przewalskii Maxim - Ma, Ruili ; Xu, Shengrong ; Chen, Yuan ; Guo, Fengxia ; Wu, Rui ; Okyere, Samuel ; Wang, Fusheng ; Jing, Yanming ; Wang, Xingzheng (Phytoprotection, 2019)