Physiological Response and Comprehensive Evaluation on the Drought Resistance of Germplasm Resources at Seedling Stage in Festuca

18 accessions of festuca germplasmresource were tested undercontinuous drought to study physiological response and comprehensive evaluation at seedling stage.The result shows:the proline,soluble sugar,membrane permeability content increased with the increasing of drought stress significantly,leaf relative watercontent decreasded sharply.It was negatively related between the damage of membrane system and leaf retention of water content under drought stress.Growing development was limited under drought stress.The height,aboveground biomass,underground biomass of 18 accesses were dropped at different degree depending on tested genotypes.A positive correlation was shown between drought resistance and height,aboveground biomass,underground biomass et al morphological indexes.The drought resistance of these materials were comprehensively evaluated with membership function method.The above synthesis shows that the accessions 8,9,12 are of drought tolerance and the accessions 5,6,15 relatively drought sensitive.