50个小麦品种的苗期耐盐性比较

Salt-Tolerance Comparison of Fifty Wheat Varieties at Seedling Stage

选取50个具有不同耐盐性的小麦品种种子作为试验材料,用水培法在1.3%Na Cl胁迫处理下进行芽期和苗期耐盐性检测,于8天时测量小麦种子的发芽率、株高以及根长,并以此评价这50个小麦品种的苗期耐盐性差异。结果从中筛选出1级耐盐性小麦品种5个,分别为烟农5158、鲁麦21、烟农19、烟农0428和山农紫麦1号;2级耐盐性小麦品种14个;盐敏感型小麦品种4个,分别为石H68-366、滕麦3号、碧蚂4号和泰农18。通过对50个供试材料的耐盐隶属函数综合值进行聚类分析,可将其分为五类。本研究可为小麦耐盐育种提供一定的理论支持。

The seeds of 50 wheat varieties with different salt-tolerance were taken as experimental materials.They were used for water culture with 1.3% Na Cl to investigate their salt-tolerance during germination and seedling stages.The germination rate,plant height and root length on the 8th day were measured and analyzed to evaluate the salt-tolerance differences of the 50 wheat cultivars.The results showed that five first-grade salt-tolerant varieties（Yannong 5158,Lumai 21,Yannong 19,Yannong 0428 and Shannong Purple Wheat 1）,fourteen second-grade salt-resistant varieties and four salt-sensitive varieties（Shi H68-366,Tengmai 3,Bima 4 and Tainong 18） were screened out.Through cluster analysis based on the salt-tolerant membership function value of 50 wheat germplasm materials,they were divided into five categories.This research could provide certain theoretical supports for salt-resistant breeding in wheat.