【目的】筛选出抗寒性较强的葡萄砧木品种,为新疆引进优良抗寒砧木及推广栽培提供科学依据。【方法】以新疆7个引种葡萄砧木的1年生扦插苗根系为材料,对7个低温处理下(-2、-4、-6、-8、-10和-12℃)根系的相对电导率、可溶性糖、游离脯氨酸、MDA含量和可溶性蛋白等理化指标进行测定,采用隶属函数法分析各理化指标,进行各品种抗寒性比较7个品种根系的抗寒性强弱。【结果】随着胁迫温度的逐渐降低,各品种根系的相对电导率、可溶性糖、游离脯氨酸和MDA含量逐渐升高,可溶性蛋白含量逐渐增加,但升高速度及增加幅度略有不同。隶属函数分析综合得出其抗寒性为:SO_4<5BB<188-08<101-14<110R<5C<脱毒贝达。【结论】7个引种砧木中根系抗寒性最强的为脱毒贝达,能抵御的最低临界温度为-12℃;110R、5C、101-14、188-08和5BB抗寒能力中等,能抵御-10℃低温;根系抗寒性最弱的为SO_4,能抵御临界最低温度为-8℃。 【Objective】 The objective of this study was to screen out grape varieties with strong cold resistance and provide scientific basis for the introduction of good cold hardwood stock and cultivation in Xinjiang. 【Method】 The root system of one-year-old cuttage seedlings of seven introduced grape rootstocks in Xinjiang was used to study the relative electric conductivity of root system under seven treatments (-2, -4, -6, -8, -10 and -12 ℃) , Soluble sugar, free proline, MDA content and soluble protein were measured. The physical and chemical indexes were analyzed by membership function method, and the cold tolerance of seven cultivars was compared. 【Result】 With the gradual decrease of stress temperature, the relative conductivity, soluble sugar, free proline and MDA content of roots increased gradually and the content of soluble protein increased gradually, but the increasing speed and increasing range were slightly different. Membership function analysis concluded that the cold resistance is: SO_4 <5BB <188-08 <101-14 <110R <5C