| The pot experiment was carried out in greenhouse to compare the drought resistance of three zoysiagrasses (LY-3, ZS-1 and ZS-SJZ). Four physiological indexes including relative water content (RWC), relative electric conductivity (REC), proline content (Pro), and total soluble carbohydrate content (TSC) were tested in leaves whereas leaves wilting and their recovery performance were investigated after rewatering. The results indicated that the RWC of the three zoysiagrasses decreased while REC, Pro content and TSC increased gradually under water stress condition. The ranges of the physiological indexes were different among the three turfgrasses. Fro 耶LY-3爷zoysiagrass, RWC dropped lest and REC and Pro content increased slower, TSC meanwhile increased higher and wilting time was the latest and the growth recovered fastest after rewatering.耶ZS-1爷zoysiagrass and 耶ZS-SJZ爷zoysiagrass had no significant differences in RWC尧REC and TSC.However Pro content of 耶ZS-1爷zoysiagrass had smaller drop than 耶ZS-SJZ爷zoysiagrass, and wilting time later. After comprehensive evaluation, the order of drought resistance of the three zoysiagrasses was LY-3>ZS-1>ZS-SJZ. |
