不同品种玉米萌发期和苗期耐盐性综合评价  

Comprehensive Evaluation of Salt Tolerance of Different Corn Varieties at the Germination and Seedling Stages

作　　者：张海艳[1,2] 赵海军[3] 

机构地区：[1]青岛农业大学农学与植物保护学院,山东青岛266109 [2]小麦玉米周年高产高效生产协同创新中心,山东泰安271018 [3]山东省农业科学院,济南250100

出　　处：《玉米科学》2016年第5期61-67,共7页Journal of Maize Sciences

基　　金：山东省科技发展计划项目(2014GNC111001);山东省农业良种工程泰山学者种业人才团队支撑计划项目(20140701);环渤海山东增粮技术集成与示范(2013BAD05B06)

摘　　要：采用220、270 mmol/L Na Cl模拟盐环境,测定玉米发芽指标和幼苗生长指标,对生产上47个玉米品种萌发期和苗期的耐盐性进行综合评价。以基于这些鉴定指标的耐盐系数为评价依据,根据各指标耐盐系数隶属函数值的变异系数划分各指标的权重,利用加权隶属函数法对供试玉米品种进行综合评价和耐盐性级别划分。结果表明,与对照相比,在220、270 mmol/L Na Cl胁迫下,所有品种的各项鉴定指标都降低;不同品种和不同浓度胁迫在各个鉴定指标上都表现出差异。在所有鉴定指标中,发芽势和发芽率与萌发期耐盐性关系密切且权重高,但发芽率在品种间的表现比发芽势更稳定;根生长指标与苗期耐盐性关系密切且权重高。根据加权隶属函数值,将供试玉米品种分为4级,高耐盐品种有鲁单981、迪卡M9、德玉4号、隆平206、登海618、青农11号、士海928,高敏感品种有蠡玉16、丹玉405、祥玉11号、东单60、中科4号、良玉188。Salt tolerance of 47 corn varieties at germination and seedling stages were comprehensively evaluated in order to provide a guide for identification and evaluation of salt tolerance of corn under 220, 270 mmol/L Na Cl solutions. Based on salt tolerance coefficients derived from these identification indices, the weight of each index was allocated according to variation coefficient of membership function value of every salt tolerance coefficients, and the tested corn varieties were evaluated and classified for salt tolerance with the weighted membership function method.Compared with distilled water control, all identification indices were declined under 220, 270 mmol/L Na Cl stress and showed the differences among both different varieties and different Na Cl concentrations. Among all identification indices, germination potential and germination rate were closer with salt tolerance at germination stage, and their weight were high, but germination rate was more variable than germination potential among tested varieties.Root growth indices were closer with salt tolerance at seedling stage, and their weight were high. With the weighted membership function method, salt tolerance of tested corn varieties were categorized into highly salt tolerant, salt tolerant, salt susceptible and highly salt susceptible. Ludan981, Dika M9, Deyu4, Longping206, Denghai618, Qingnong 11, Shihai928 were highly salt tolerant, and Liyu 16, Danyu405, Xiangyu 11, Dongdan 60, Zhongke4, Li-angyu188 were highly salt susceptible.

关 键 词：玉米 萌发期 苗期 耐盐性 综合评价 

分 类 号：S513.01[农业科学—作物学]