Abstract:

Under different drought stresses, changes of the morphological, physiological characteristics are studied on three kinds vine of evergreen ground cover plants: Lonicera japonica, Ficus tikoua and Hedea helix. The results showed that the drought stress treatment could increase membrane permeability of leaf cells. And Lonicera japonica had the smallest increace. The activities of POD increased first and then declined, which in Lonicera japonica and Ficus tikoua were relatively high. The content of praline, soluble sugar in the leaves of three evergreen lianas increased, and also Lonicera japonica had the most. Finally, It was concluded that the drought - resistant ability of three tested species decreased in the following order: Lonicera japonica, Ficus tikoua, Hedea helix by a comprehensive analysis of fuzzy membership functions.