To analysis submergence tolerance of 40 cucumber ( Cucumis sativus L. ) cultivars, the seedlings of each line at five-leaf stage were treated with flooding water. The plant death rate, chlorophyll loss ratio, SOD, POD and CAT values were checked at the 0 and 6 days after treatment. Based on the average of subordinate function (SF) analysis, North China cucumber showed high tolerance to submergence treatment and South China cucumber was middle tolerant to submergence, but zaoer N line has high tolerance to submergence. American field cucumber and European greenhouse cucumber showed low tolerance or susceptible to submergence. Two Japanese cucumber lines and one West Asia cucumber line were used in present evaluation. They showed middle tolerance and susceptible to submergence treatment.%在涝害胁迫前后,分析了黄瓜6个生态类型的40个品种(系)的植株死亡率、叶绿素损失率、SOD增长率、POD损失率和CAT增长率5项指标,并以不同品种(系)间5项指标的平均隶属函数值综合评价了40个品种(系)的耐涝性.结果表明,供试华北型黄瓜中具有较多的强耐涝性资源,华南型黄瓜多数属于中等耐涝类型,但是早二N品系具有较强的耐涝性;美同露地黄瓜和欧洲温室型黄瓜多数属于不耐涝或敏涝类型;西亚型和日本型黄瓜分别属于中等耐涝和敏涝类型.
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