对6个生态类型的22个黄瓜品种(系)的种子在15℃低温下相对发芽力、2.5℃低温处理后胚根伸长速率和三叶一心期的相对电解质渗透率共4项指标分别进行了测定,并采用隶属函数法对22个品种(系)的耐冷性进行了综合评价.结果表明,8个华北型黄瓜品种(系)中有2个强耐冷性品系和1个耐冷品种,4个华南型黄瓜均属于不耐冷或冷敏感类型,美国露地型黄瓜、欧洲温室型和露地型黄瓜共9个品种(系)包括了耐冷、中等耐冷和不耐冷等不同类型；日本型黄瓜日节成表现为冷敏感类型.%The cold tolerance of 22 cucumber( Cucumis sativus L. )cultivars belonging to 6 different ecotypes was evaluated and the relative germination ratio of seeds under 15 ℃, radical growth rate under 2.5℃ treatment and relative electron leakage ratio at seedling stage of each cultivar were tested. The results indicated that two out of 8 North China cucumber cultivars showed strong tolerance to cold stress and 1 was tolerant to cold stress. 4 South China cucumber cultivars were sensitive or low tolerant to cold stress. Nine cucumber cultivars belonging to American field type, European greenhouse and field types were of different eco-types, showing tolerance, mid-tolerance and no tolerance to cold stress. Only 1 Japanese cultivar was sensitive to cold stress.
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