12个黄瓜品种(系)芽期和苗期耐湿冷性比较  

Comparison of combined high humidity and chilling tolerance for twelve cucumber varieties(lines)at the germination and seedling stage

作　　者：王波[1] 秦玉红[1] 李磊[1] 张守才[1] 张功臣 WANG Bo;QIN Yuhong;LI Lei;ZHANG Shoucai;ZHANG Gongchen(Qingdao Academy of Agricultural Sciences,Qingdao 266100,Shandong,China)

机构地区：[1]青岛市农业科学研究院,山东青岛266100

出　　处：《中国瓜菜》2025年第3期82-87,共6页China Cucurbits And Vegetables

基　　金：山东省重点研发计划(重大科技创新工程)项目(2021LZGC016)。

摘　　要：低温高湿是设施黄瓜秋冬季栽培的重要限制因子,为探明不同黄瓜品种(系)的耐湿冷特性,通过人工模拟低温高湿条件对12个黄瓜品种(系)进行耐湿冷性综合比较。结果表明,低温高湿条件下,12个黄瓜品种(系)的相对发芽率、相对发芽势和相对发芽指数存在一定差异,JY1的相对发芽指数显著高于其他品种(系)。苗期耐湿冷比较结果表明,湿冷条件下黄瓜幼苗的生长受到抑制,不同品种(系)间抗氧化酶活性和丙二醛含量存在显著差异。综合评价结果表明,QY30和JY1的D值相对较高,分别为0.942和0.774,而QY20和QD29的D值相对较低,分别为0.218和0.217。相关性分析结果表明,各品种的D值与湿冷伤害指数呈极显著负相关。综上,QY30和JY1的苗期耐湿冷性相对较强,而QY20和QD29的耐湿冷性相对较弱。研究结果为后续耐湿冷种质资源利用和基因挖掘奠定了基础。Low temperature and high humidity are limiting factors for the autumn-winter cultivation of cucumber in solar and tunnel greenhouse.To explore the wet-chilling tolerance of different cucumber varieties(lines),twelve varieties(lines)were comprehensively compared under controlled conditions.The results showed that obvious differences had been observed in relative germination rate,relative germination potential,and relative germination index among twelve materials at 15°C.The cultivar JY1 exhibited significantly higher relative germination index than other varieties(lines).The identification of wet-chilling tolerance during the seedling stage showed that the growth of cucumber seedlings was significantly inhibited under wet and chilling conditions,and the antioxidant enzyme activity and malondialdehyde con-tent varied greatly among different varieties(lines).Comprehensive evaluation results showed that QY30 had the highest D value of 0.942 and JY1 ranked second with a D value of 0.774.The D values of QY20 and QD29 were 0.218 and 0.217,respectively.Correlation analysis showed that the D value was extremely significantly negatively correlated with the wet-chilling damage index.The wet-chilling resistance of varieties(lines)JY1 and QY30 was relatively high,while the relatively wet-chilling resistance of lines QY20 and QY29 was relatively low.These results can provide the basis for utilization of cucumber wet-chilling resistant germplasm and wet-chilling resistant gene mining.

关 键 词：黄瓜 耐湿冷性 抗氧化酶活性 相对发芽指数 苗期 

分 类 号：S642.2[农业科学—蔬菜学]