【作者】 王俊杰； 吕志男； 吕世杰； 云锦凤；

【Author】 WANG Jun-jie,LV Zhi-nan,LV Shi-jie,YUN Jin-feng (College of Ecology and Environment Science,Inner Mongolia Agricultural University,Huhhot 010019,China)

【机构】 内蒙古农业大学生态环境学院；

【摘要】 研究不同盐浓度胁迫对野生黄花苜蓿种子萌发的影响,评价不同野生黄花苜蓿种群种子萌发期的耐盐能力,筛选耐盐性强的黄花苜蓿种质,为苜蓿品种改良和培育耐盐品种提供优良种质。用0.2%、0.4%、0.6%和0.8%NaCl溶液分别对来自中国新疆、内蒙古和蒙古国、俄罗斯的16个野生黄花苜蓿种群的种子进行处理,通过测定种子萌发期的相对发芽率、相对发芽势、相对发芽指数、相对根长和相对苗高对不同野生黄花苜蓿种群种子萌发期耐盐性进行研究。结果表明,不同黄花苜蓿野生种群种子萌发对盐胁迫的响应不同,种群间种子萌发期耐盐能力差异显著,野生黄花苜蓿中存在耐盐性较强的种质;0.6%和0.8%Nacl溶液是黄花苜蓿种子萌发期耐盐性鉴定的适宜盐浓度。更多还原

【Abstract】 The effect of different consistence of NaCl solution on salt tolerance of 16 sickle alfalfa wild populations were studied for providing genetically improved new sickle alfalfa germplasm resources.The populations of sickle alfalfa were collected from Xinjiang and Inner Mongolia of China,Russia and Mongolia.The salt tolerance was measured by using the index of relative germinating rate,relative germinating energy,relative germinating index,relative root length and relative seedling height under the treatments with 0.2%,0.4%,0.6%,0.8%NaCl solution in germinating period.The results showed that the differences of salt tolerance between different wild populations of sickle alfalfa were marked,and there was higher salt-tolerant germplasm in wild sickle alfalfa.0.6%and 0.8%NaCl solutions are appropriate to identify the salt tolerance of sickle alfalfa in germinating period.更多还原