Abstract: of VA mycorrhiza on growth , water status of wild jujube ( Zizyphus spinosus Hu) seedlings grown in pots were studied. As contrasted to the controls , VAM could increase plant growth ( such as plant height , leaf area , fresh and dry mass) , enhance leaf relative water content, photosynthetic rates, transpiration rates , stomatal conductance and improve plant drought tolerance significantly when the relative water content of soil was 20 % , 40 % , 60 % respectively. The water consumption of the mycorrhizal plants producing one gram dry matter was from 16. 5 percent to 29. 8 percent less than that of nonmycorrhizal plants under the same soil water content condition. The VAM colonization , the growth of plants , water status of plants had no definitely difference between the water experiment Ⅰ (Water treatments started from sowing) and Ⅱ (Water treatments started from 40 days after sowing) .

Key words: VA mycorrhiza, Wild jujube ( Zizyphus spinosus Hu), Seedlings, Drought tolerance