Germplasm Resources and Drought Resistance Evaluation of Siberian Wildrye ( Elymus Sibiricus L.) in the Tibetan Plateau

Siberian wildrye (Elymus sibiricus L.) is an important ecological forage in the plateau region of the world. Drought stress is one of the main environmental factors limiting the yield of Siberian wildrye. Accordingly, it is of great significance to select and breed Siberian wildrye which is suitable for growing in the arid environment in the plateau area. In this study, 11 germplasm resources of Siberian wildrye collected in the Tibetan Plateau were used to analyze their production performance and nutritional quality and comprehensively understand the physiological response of Siberian wildrye under four drought stress conditions (30