The changes of malondialdehyde,free proline,chlorophyll,peroxidase,relative electrical con-ductivity and catalase of 3 varieties of Agropyron cristatum seedlings were analyzed by pot seedling cultivation un-der drought stress.The results showed that malondialdehyde,free proline,relative electrical conductivity and catalase increased with the intensities of drought stress,while the chlorophyll decreased,and peroxidase de-creased first and then increased.Correlation analysis and membership function method were used to evaluate the drought stress of Agropyron cristatum seedlings.The order of drought tolerance of Agropyron cristatum was:Agro-pyron cristatum(L.)Gaertn.cv.Duerbote>Agropyron mongolicum Keng>Agropyron cristatum(L.)Gaertn.This study provided reference for identification of drought resistance of forage and management of degraded grass-land in arid regions.
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万方数据
