大麻萌发期和苗期耐盐性评价及耐盐指标筛选  

Evaluation for Salt Tolerance of Hemp at Germinating and Seedling Stages and Selection of Salt Tolerance Indices

作　　者：杨阳[1] 苏文君[1] 杜光辉[1] 邓纲[1] 刘飞虎[1] 

机构地区：[1]云南大学农学院,云南昆明650091

出　　处：《云南农业大学学报（自然科学版）》2016年第3期392-397,共6页Journal of Yunnan Agricultural University:Natural Science

基　　金：国家自然科学基金(31371678);国家麻类产业技术体系建设专项资金(CARS-19)

摘　　要：试验采用不同浓度Na Cl水溶液模拟盐胁迫,以多项指标计算的隶属函数值和总隶属函数值为依据,比较了7个大麻品种萌发期和苗期的耐盐性,并进行聚类分析。结果表明:140 mmol/L Na Cl是大麻品种进行耐盐性鉴定的适宜浓度,大麻的耐盐性在生育期和品种间表现不同;在大麻萌发期,云麻5号、哈尔滨大麻、晋麻1号耐盐性强,皖大麻1号、龙麻1号、云麻1号耐盐性中等,巴马火麻耐盐性弱,相对发芽势和相对根长是耐盐性强弱鉴定的指标;在大麻苗期,巴马火麻耐盐性强,云麻1号、云麻5号、龙麻1号、哈尔滨大麻耐盐性中等,皖大麻1号、晋麻1号耐盐性弱,相对地上部干物重、相对过氧化物酶活性和相对丙二醛含量是耐盐性强弱鉴定的指标。The salt tolerance at germinating and seedling stages of seven hemp cuhivars under different concentrations of NaCl was studied by cluster analysis, based on the subjection values of different indices and the sum subjection value. The results showed that the appropriate concentration of NaCl for the evaluation of salt tolerance was 140 mmol/L. The salt tolerance of hemp differed with growth stage and among cultivars. Yunma No. 5, Harbin Hemp and Jinma No. 1 were salt-tolerant, Wandama No. 1, Longma No. 1 and Yunma No. 1 were moderately salt-tolerant, while Bamahuoma was salt-sensitive at germinating. Relative germination potential and relative root length could be used as the parameters for evaluation of salt tolerance at germinating stage. For the seedling stage, Bamahuoma was salt-tolerant, Yunma No. 1 , Yunma No. 5, Longma No. 1 and Harbin Hemp were moderately salt-tolerant, Wandama No. 1 and Jinma No. 1 were salt-sensitive. Relative dry mass of shoot, relative activity of peroxidase and relative content of malondialdehyde were suggested for assessment of salt tolerance at seedling stage.

关 键 词：大麻 耐盐指标 萌发期 苗期 隶属函数值 聚类分析 

分 类 号：S563.303.4[农业科学—作物学]