FIGURE 2 Effects of Elymus nutans extracts on growth of highland crops. Values are mean ± SD (n=5). Different letters denote significant differences between treatments with a > b > c > d, the same below.
The allelopathic effect response index and comprehensive allelopathic effect response index of drooping wildryegrass on the tested crops presented in Figure 3. The inhibition of the extracts on hulless barley and oat occurred in germination with germination allelopathic index of -0.391 and -0.210, respectively. Wheat, quinoa and rape occurred in seedling growth with growth allelopathic index of -0.173, 0.097 and -0.177, respectively. Oat exhibited the largest comprehensive allelopathic index of -0.265, and quinoa presented the smallest one -0.068.