Figure 4. Relationships between zoysiagrass freeze tolerance (LT₅₀, the lethal temperature killing 50% of the plants) and (A) the change in sucrose during acclimation (r² = 0.51, P = 0.006), and (B) sucrose/total reducing sugars in cold-acclimated plants (r² = 0.43, P = 0.02). Each point represents the mean of six replications. *, ** Significant at the 0.05 and 0.01 probability levels, respectively.